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/*ÌâÄ¿ÃèÊö ÊäÈëijλͬѧ¸÷Ãſεijɼ¨£¬Êä³öƽ¾ù³É¼¨¡£ÊäÈëµÄ³É¼¨¾ùΪÎå¼¶ÖÆ³É¼¨£¬Îå¼¶ÖÆ³É¼¨×ª»»Îª°Ù·ÖÖÆ³É¼¨µÄ¹æÔòÈçÏ£º 'A¡¯×ª»»Îª°Ù·ÖÖ®³É¼¨Îª95·Ö£¬'B¡¯¶ÔÓ¦85·Ö£¬C¶ÔÓ¦75·Ö£¬'D¡¯¶ÔÓ¦65·Ö£¬'E¡¯¶ÔÓ¦40·Ö¡£ Êä³öµÄƽ¾ù³É¼¨ÎªÒ»¸öʵÊý£¬±£Áô1λСÊý¡£ ÒªÇó³ÌÐò¶¨ÒåÒ»¸ögetScore()º¯ÊýºÍÒ»¸ömain()º¯Êý£¬getScore()º¯Êý·µ»ØÒ»¸öµÈ¼¶¶ÔÓ¦µÄ·ÖÊý£¬ÆäÓ๦ÄÜÔÚmain()º¯ÊýÖÐʵÏÖ¡£ int getScore(char g) { //°ÑµÈ¼¶gת»»³É¶ÔÓ¦µÄ·ÖÊý²¢·µ»ØÕâ¸ö·ÖÊý¡£ } ÊäÈë¸ñʽ ÊäÈëΪһÐÐÖ»°üº¬¡¯A¡¯~'E¡¯µÄ×Öĸ£¬Ã¿¸ö×Öĸ±íʾһÃſεijɼ¨£¬ÒԻسµ¼ü±íʾ½áÊø¡£ Êä³ö¸ñʽ Êä³öƽ¾ù³É¼¨£¬ÎªÒ»¸öʵÊý£¬±£ÁôһλСÊý¡£ ÑùÀýÊäÈë AABB ÑùÀýÊä³ö 90.0 */ #include<stdio.h> int getScore(char g) { int fenshu; char A,B,C,D,E; //°ÑµÈ¼¶gת»»³É¶ÔÓ¦µÄ·ÖÊý²¢·µ»ØÕâ¸ö·ÖÊý¡£ if(g==A){ fenshu=95; }else if(g==B){ fenshu=85; }else if(g==C){ fenshu=75; }else if(g==D){ fenshu=65; }else if(g==E){ fenshu=40; } return fenshu; } int main(){ char dj,fen=0,sum=0; for(int i=1;i<=4;i++){ scanf("%s",&dj); int fen=getScore(dj); sum+=fen; } double pj=0; pj=sum/4.0; printf("%.1f",pj); return 0; } 修改代码
11-27
#include <reg52.h> //------------------------- Òý½Å¶¨Òå --------------------------// sbit BEEP = P2^0; //·äÃùÆ÷¿ØÖÆÒý½Å£¬?µçƽÓÐЧ sbit LED1 = P2^3; //LED1£¬¿ØÖÆÒý½Å£¬µÍµçƽÓÐЧ sbit LED2 = P2^2; //LED2£¬¿ØÖÆÒý½Å£¬µÍµçƽÓÐЧ sbit LED3 = P2^1; //LED3£¬¿ØÖÆÒý½Å£¬µÍµçƽÓÐЧ //ÊýÂë¹ÜÒý½Å¶¨Òå #define duanPore P0 //ÊýÂë¹Ü¶Î¿ØÖƶ˿ڣ¬¸ßµçƽÓÐЧ sbit DIG1 = P2^4; //ÊýÂë¹ÜµÚ1λλѡ¿ØÖƶ˿ڣ¬µÍµçƽÓÐЧ sbit DIG2 = P2^5; //ÊýÂë¹ÜµÚ2λλѡ¿ØÖƶ˿ڣ¬µÍµçƽÓÐЧ sbit DIG3 = P2^6; //ÊýÂë¹ÜµÚ3λλѡ¿ØÖƶ˿ڣ¬µÍµçƽÓÐЧ sbit DIG4 = P2^7; //ÊýÂë¹ÜµÚ4λλѡ¿ØÖƶ˿ڣ¬µÍµçƽÓÐЧ //°´¼üÒý½Å¶¨Òå sbit KEY1 = P1^0; //1ºÅÑ¡ÊÖ sbit KEY2 = P1^1; //2ºÅÑ¡ÊÖ sbit KEY3 = P1^2; //3ºÅÑ¡ÊÖ sbit KEY4 = P1^3; //4ºÅÑ¡ÊÖ sbit KEY5 = P1^4; //5ºÅÑ¡ÊÖ sbit KEY6 = P1^5; //6ºÅÑ¡ÊÖ sbit KEY7 = P3^2; //Ö÷³ÖÈ˼ü sbit KEY8 = P3^3; //ÉèÖüü //---------------------- È«¾Ö±äÁ¿¶¨Òå --------------------// //ÊýÂë¹Ü¶ÎÂë±í£¬ÊÊÓÃÓÚ¹²ÒõÊýÂë¹Ü unsigned char code tab_duan[19] = { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f, //0~9 0x77,0x7c,0x39,0x5e,0x79,0x71, //A~F 0x40,0x00,0x48 //'-'£¬¹Ø±ÕÏÔʾ£¬'=' }; unsigned char dat_buf[4] = {17, 17, 0, 5}; //ÏÔʾÊý¾Ý»º´æÇø£¬Ä¬ÈÏÉϵçÏÔʾ" 05" int time = 5, time1 = 5, time2 = 20; //µ¹¼ÆÊ±Ê±¼ä£¬time1£ºÇÀ´ðµ¹¼ÆÊ±Ê±¼ä£¬time2£º»Ø´ðµ¹¼ÆÊ±Ê±¼ä unsigned char i = 0; unsigned int count = 0; //¼ÆÊý»º´æ±äÁ¿ bit flag_lock = 1; //¼üÅÌËø¶¨±êÖ¾£¬1£º²»Ëø¶¨£¬0£ºËø¶¨ //------------------------------- º¯ÊýÉùÃ÷ ------------------------------------// void DelayMs(unsigned int ms); //ÑÓʱº¯Êý£¬µ¥Î»£ºms void dig_scan(unsigned char *dat); unsigned char KeyScan(void); //¶ÀÁ¢°´¼üɨÃè void InitTimer0(void); //¶¨Ê±Æ÷0³õʼ»¯ void alarm(void); //±¨¾¯º¯Êý void AnswerTask(void); //ÇÀ´ðÈÎÎñ void SetTime(void); //ÉèÖõ¹¼ÆÊ±Ê±¼ä /* Ö÷º¯Êý */ void main(void) { BEEP = 0; //ÉϵçĬÈϹرշäÃùÆ÷ LED1 = 1; InitTimer0(); //¶¨Ê±Æ÷0³õʼ»¯ time = time1; //ÉϵçĬÈÏÇÀ´ðµ¹¼ÆÊ± while(1) { if(KeyScan() == 7) //Èç¹ûÖ÷³ÖÈ˼ü°´Ï£¬Ôò½øÐÐÇÀ´ð { alarm(); //·äÃùÆ÷ÏìÒ»Éù AnswerTask(); //½øÐÐÇÀ´ðÈÎÎñ } if(KeyScan() == 8) //Èç¹ûÉèÖüü°´Ï£¬½øÈëÉèÖõ¹¼ÆÊ±Ê±¼ä { alarm(); //·äÃùÆ÷ÏìÒ»Éù SetTime(); //½øÈëÉè¼Æµ¹¼ÆÊ±Ê±¼ä } dat_buf[0] = 17; dat_buf[1] = 17; dat_buf[2] = time / 10; //È¡³öµ¹¼ÆÊ±µÄʮλÊý dat_buf[3] = time % 10; //È¡³öµ¹¼ÆÊ±µÄ¸öλÊý dig_scan(dat_buf); //²âÊÔÊýÂë¹ÜÏÔʾ } } /* ÑÓʱº¯Êý£¬µ¥Î»£ºms */ void DelayMs(unsigned int ms) { unsigned char a,b,c; while(--ms) { for(c=1;c>0;c--) for(b=142;b>0;b--) for(a=2;a>0;a--); } } /* ÊýÂë¹ÜÏÔʾɨÃè */ void dig_scan(unsigned char *dat) { /* ¶¯Ì¬É¨Ãè´¦Àí */ switch(i) { case 0: { duanPore = tab_duan[dat[0]]; //ÏÔʾµÚ1λÊýÂë¹ÜÄÚÈÝ DIG1 = 0; break; } case 1: { duanPore = tab_duan[dat[1]]; //ÏÔʾµÚ2λÊýÂë¹ÜÄÚÈÝ DIG2 = 0; //ѡͨµÚ2λÊýÂë¹Ü break; } case 2: { duanPore = tab_duan[dat[2]]; //ÏÔʾµÚ3λÊýÂë¹ÜÄÚÈÝ DIG3 = 0; //ѡͨµÚ3λÊýÂë¹Ü break; } case 3: { duanPore = tab_duan[dat[3]]; //ÏÔʾµÚ4λÊýÂë¹ÜÄÚÈÝ DIG4 = 0; //ѡͨµÚ4λÊýÂë¹Ü break; } default: break; } DelayMs(5); //ɨÃèÑÓʱ10ms£¬¸ù¾Ýʵ¼ÊÇé¿öÊʵ±Ð޸ĸÄÑÓʱʱ¼ä DIG1 = 1; //ÏûÒþ DIG2 = 1; DIG3 = 1; DIG4 = 1; ++i; //ɨÃè±äÁ¿Ñ­»· if(i > 3) i = 0; } /* ¶ÀÁ¢°´¼üɨÃè */ unsigned char KeyScan(void) { if(KEY1 == 0) //Èç¹û°´¼ü1°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY1 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 1; //Êä³ö°´¼üÖµ1 } if(KEY2 == 0) //Èç¹û°´¼ü2°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY2 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 2; //Êä³ö°´¼üÖµ2 } if(KEY3 == 0) //Èç¹û°´¼ü3°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY3 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 3; //Êä³ö°´¼üÖµ3 } if(KEY4 == 0) //Èç¹û°´¼ü4°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY4 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 4; //Êä³ö°´¼üÖµ4 } if(KEY5 == 0) //Èç¹û°´¼ü5°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY5 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 5; //Êä³ö°´¼üÖµ5 } if(KEY6 == 0) //Èç¹û°´¼ü6°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY6 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 6; //Êä³ö°´¼üÖµ6 } if(KEY7 == 0) //Èç¹û°´¼ü7°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY7 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 7; //Êä³ö°´¼üÖµ7 } if(KEY8 == 0) //Èç¹û°´¼ü8°´Ï { DelayMs(10); //ÑÓʱ10msÈ¥³ý°´¼ü¶¶¶¯ if(KEY8 == 0) //ÔÙÈ·ÈÏÒ»´Î°´¼ü°´Ï£¬±íʾµ½Õâ°´¼üÒѾ­Îȶ¨ÁË return 8; //Êä³ö°´¼üÖµ8 } return 0; //ÎÞ°´¼ü°´ÏÂÊä³ö0 } /* ¶¨Ê±Æ÷0³õʼ»¯ */ void InitTimer0(void) { TMOD = 0x01; //ÅäÖö¨Ê±Æ÷0Ϊ¹¤×÷ģʽ1£¬16λ¶¨Ê±Æ÷ TH0 = (65536 - 10000) / 256; //¶¨Ê±10ms TL0 = (65536 - 10000) % 256; EA = 1; //´ò¿ª×ÜÖÐ¶Ï ET0 = 1; //´ò¿ª¶¨Ê±Æ÷0ÖÐ¶Ï TR0 = 0; //ÉϵçĬÈϹرն¨Ê±Æ÷0 } /* ¶¨Ê±Æ÷0ÖжϷþÎñº¯Êý£¬10ms½øÒ»´ÎÖÐ¶Ï */ void Timer0Interrupt(void) interrupt 1 { TH0 = (65536 - 10000) / 256; //¶¨Ê±10ms£¬ÖØÐÂ×°ÔØ¼ÆÊýÖµ TL0 = (65536 - 10000) % 256; ++count; if(count > 100) //1sʱ¼ä¼ÆË㣺10ms * 100 = 1s { count = 0; //¼ÆÊýÖµÇåÁã --time; //µ¹¼ÆÊ±Ê±¼ä¼õÒ»´Î if(time <= 0) //Èç¹ûµ¹¼ÆÊ±½áÊø£¬Ôò¹Ø±Õ¶¨Ê±Æ÷0£¬Í£Ö¹µ¹¼ÆÊ±£¬²¢Éù¹â±¨¾¯ºÍËø¶¨¼üÅÌ { TR0 = 0; //¹Ø±Õ¶¨Ê±Æ÷0 BEEP = 1; //Éù¹â±¨¾¯ LED1 = 0; flag_lock = 0; //Ëø¶¨¼üÅÌ } } } /* ±¨¾¯º¯Êý */ void alarm(void) { BEEP = 1; //·äÃùÆ÷ÏìһϠDelayMs(300); //ÑÓʱ300ms BEEP = 0; } /* ʵÏÖÇÀ´ðÈÎÎñ */ void AnswerTask(void) { unsigned char key_val; //°´¼üÖµ»º´æ TR0 = 1; //Æô¶¯¶¨Ê±Æ÷0£¬¿ªÊ¼µ¹¼ÆÊ± while(1) { if(flag_lock == 1) { key_val = KeyScan(); //»ñÈ¡°´¼üÖµ switch(key_val) { case 1: { dat_buf[0] = key_val; //µÚ1λÊýÂë¹ÜÏÔʾ1ºÅ dat_buf[1] = 16; //ÏÔʾ'-' time = time2; //»Ø´ðµ¹¼ÆÊ±£¬Ñ¡Êֻشðʱ¼ä alarm(); //·äÃùÆ÷ÏìһϠflag_lock = 0; //Ëø¶¨¼üÅÌ break; } case 2: { dat_buf[0] = key_val; //µÚ2λÊýÂë¹ÜÏÔʾ2ºÅ dat_buf[1] = 16; //ÏÔʾ'-' time = time2; //»Ø´ðµ¹¼ÆÊ±£¬Ñ¡Êֻشðʱ¼ä alarm(); //·äÃùÆ÷ÏìһϠflag_lock = 0; break; } case 3: { dat_buf[0] = key_val; //µÚ3λÊýÂë¹ÜÏÔʾ3ºÅ dat_buf[1] = 16; //ÏÔʾ'-' time = time2; alarm(); //·äÃùÆ÷ÏìһϠflag_lock = 0; break; } case 4: { dat_buf[0] = key_val; //µÚ4λÊýÂë¹ÜÏÔʾ4ºÅ dat_buf[1] = 16; //ÏÔʾ'-' time = time2; alarm(); //·äÃùÆ÷ÏìһϠflag_lock = 0; break; } case 5: { dat_buf[0] = key_val; //µÚ5λÊýÂë¹ÜÏÔʾ5ºÅ dat_buf[1] = 16; //ÏÔʾ'-' time = time2; alarm(); //·äÃùÆ÷ÏìһϠflag_lock = 0; break; } case 6: { dat_buf[0] = key_val; //µÚ6λÊýÂë¹ÜÏÔʾ6ºÅ dat_buf[1] = 16; //ÏÔʾ'-' time = time2; alarm(); //·äÃùÆ÷ÏìһϠflag_lock = 0; break; } default: break; } } dat_buf[2] = time / 10; //È¡³öµ¹¼ÆÊ±µÄʮλÊý dat_buf[3] = time % 10; //È¡³öµ¹¼ÆÊ±µÄ¸öλÊý dig_scan(dat_buf); //ÊýÂë¹ÜÏÔʾÄÚÈÝ } } /* ÉèÖõ¹¼ÆÊ±Ê±¼ä */ void SetTime(void) { unsigned char mode = 0; //0£ºµ÷½ÚÇÀ´ðµ¹¼ÆÊ±£¬1£ºµ÷½Ú»Ø´ðµ¹¼ÆÊ±£¬2£ºÍ˳ö while(1) { if(KeyScan() == 8) //Èç¹ûÔٴΰ´ÏÂÉèÖüü£¬ÔòÍ˳öÉèÖù¦ÄÜ { alarm(); //·äÃùÆ÷ÏìÒ»Éù ++mode; if(mode >= 2) break; //Ìø³öµ±Ç°ËÀÑ­»· } if(KeyScan() == 7) //Èç¹û°´Ï¼Ӽü£¬½øÐе÷ʱ { alarm(); //·äÃùÆ÷ÏìÒ»Éù if(mode == 0) //µ÷½ÚÇÀ´ðµ¹¼ÆÊ± { ++time1; //µ¹¼ÆÊ±Ê±¼ä¼ÓÒ»´Î if(time1 > 30) //µ÷ʱ·¶Î§£º5s~30s time1 = 5; } if(mode == 1) //µ÷½Ú»Ø´ðµ¹¼ÆÊ± { ++time2; //µ¹¼ÆÊ±Ê±¼ä¼ÓÒ»´Î if(time2 > 30) //µ÷ʱ·¶Î§£º5s~30s time2 = 5; } } /* µ÷ʱÏÔʾ´¦Àí */ if(mode == 0) { dat_buf[0] = 16; //ÏÔʾ'-' dat_buf[1] = time1 / 10; //È¡³öµ¹¼ÆÊ±µÄʮλÊý dat_buf[2] = time1 % 10; //È¡³öµ¹¼ÆÊ±µÄ¸öλÊý dat_buf[3] = 16; //ÏÔʾ'-' } if(mode == 1) { dat_buf[0] = 18; //ÏÔʾ'=' dat_buf[1] = time2 / 10; //È¡³öµ¹¼ÆÊ±µÄʮλÊý dat_buf[2] = time2 % 10; //È¡³öµ¹¼ÆÊ±µÄ¸öλÊý dat_buf[3] = 18; //ÏÔʾ'=' } dig_scan(dat_buf); //ÊýÂë¹ÜÏÔʾÄÚÈÝ } time = time1; //»Øµ½Ö÷½çÃæÏÔʾÇÀ´ðµ¹¼ÆÊ± }写出一个这样的代码,主持人是1.0,时间调节是1.1,选手1.2-1.7,蜂鸣器是3.3,LED是3.4,数码管1234是2.0-2.3
09-19
void TIM3_PWM_Init(u16 arr,u16 psc) { GPIO_InitTypeDef GPIO_InitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE); //ʹÄÜGPIOÍâÉèºÍAFIO¸´Óù¦ÄÜÄ£¿éʱÖÓʹÄÜ GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); //Timer3²¿·ÖÖØÓ³Éä TIM3_CH2->PB5 //ÓÃÓÚTIM3µÄCH2Êä³öµÄPWMͨ¹ý¸ÃLEDÏÔʾ //ÉèÖøÃÒý½ÅΪ¸´ÓÃÊä³ö¹¦ÄÜ,Êä³öTIM3 CH2µÄPWMÂö³å²¨ÐÎ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //TIM_CH2 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //¸´ÓÃÍÆÍìÊä³ö GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); //GPIO_WriteBit(GPIOA, GPIO_Pin_7,Bit_SET); // PA7ÉÏÀ­ TIM_TimeBaseStructure.TIM_Period = arr; //ÉèÖÃÔÚÏÂÒ»¸ö¸üÐÂʼþ×°Èë»î¶¯µÄ×Ô¶¯ÖØ×°ÔؼĴæÆ÷ÖÜÆÚµÄÖµ 80K TIM_TimeBaseStructure.TIM_Prescaler =psc; //ÉèÖÃÓÃÀ´×÷ΪTIMxʱÖÓÆµÂʳýÊýµÄÔ¤·ÖƵֵ ²»·ÖƵ TIM_TimeBaseStructure.TIM_ClockDivision = 0; //ÉèÖÃʱÖÓ·Ö¸î:TDTS = Tck_tim TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIMÏòÉϼÆÊýģʽ TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //¸ù¾ÝTIM_TimeBaseInitStructÖÐÖ¸¶¨µÄ²ÎÊý³õʼ»¯TIMxµÄʱ¼ä»ùÊýµ¥Î» TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //Ñ¡Ôñ¶¨Ê±Æ÷ģʽ:TIMÂö³å¿í¶Èµ÷ÖÆÄ£Ê½2 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //±È½ÏÊä³öʹÄÜ TIM_OCInitStructure.TIM_Pulse = 0; //ÉèÖôý×°Èë²¶»ñ±È½Ï¼Ä´æÆ÷µÄÂö³åÖµ TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //Êä³ö¼«ÐÔ:TIMÊä³ö±È½Ï¼«ÐÔ¸ß TIM_OC2Init(TIM3, &TIM_OCInitStructure); //¸ù¾ÝTIM_OCInitStructÖÐÖ¸¶¨µÄ²ÎÊý³õʼ»¯ÍâÉèTIMx TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable); //ʹÄÜTIMxÔÚCCR2ÉϵÄÔ¤×°ÔØ¼Ä´æÆ÷ TIM_ARRPreloadConfig(TIM3, ENABLE); //ʹÄÜTIMxÔÚARRÉϵÄÔ¤×°ÔØ¼Ä´æÆ÷ TIM_Cmd(TIM3, ENABLE); //ʹÄÜTIMxÍâÉè通俗易懂的讲解一下这个程序
06-22
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