归来笑拈梅花嗅,春在枝头已十分
文章目录
- [P2433 【深基1-2】小学数学 N 合一](https://www.luogu.com.cn/problem/P2433)
- [P5709 【深基2.习6】Apples Prologue / 苹果和虫子](https://www.luogu.com.cn/problem/P5709)
- [P5710 【深基3.例2】数的性质](https://www.luogu.com.cn/problem/P5710)
- [P5711 【深基3.例3】闰年判断](https://www.luogu.com.cn/problem/P5711)
- [P5712 【深基3.例4】Apples](https://www.luogu.com.cn/problem/P5712)
- [P5713 【深基3.例5】洛谷团队系统](https://www.luogu.com.cn/problem/P5713)
- [P5714 【深基3.例7】肥胖问题](https://www.luogu.com.cn/problem/P5714)
- [P5715 【深基3.例8】三位数排序](https://www.luogu.com.cn/problem/P5715)
- [P5716 【深基3.例9】月份天数](https://www.luogu.com.cn/problem/P5716)
- [P1085 [NOIP 2004 普及组] 不高兴的津津](https://www.luogu.com.cn/problem/P1085)
- [P1909 [NOIP 2016 普及组] 买铅笔](https://www.luogu.com.cn/problem/P1909)
- [P5717 【深基3.习8】三角形分类](https://www.luogu.com.cn/problem/P5717)
- [P1422 小玉家的电费](https://www.luogu.com.cn/problem/P1422)
- [P1424 小鱼的航程(改进版)](https://www.luogu.com.cn/problem/P1424)
- [P1888 三角函数](https://www.luogu.com.cn/problem/P1888)
- [P1046 [NOIP 2005 普及组] 陶陶摘苹果](https://www.luogu.com.cn/problem/P1046)
- [P4414 [COCI 2006/2007 #2] ABC](https://www.luogu.com.cn/problem/P4414)
- [P1055 [NOIP 2008 普及组] ISBN 号码](https://www.luogu.com.cn/problem/P1055)
P2433 【深基1-2】小学数学 N 合一
代码如下:
#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;
int main() {
int T;
cin >> T;
if (T == 1) {
cout << "I love Luogu!";
} else if (T == 2) {
cout << 2 + 4 << " " << 10 - 2 - 4;
} else if (T == 3) {
cout<<3<<endl<<12<<endl<<2<<endl;
} else if (T == 4) {
printf("%.3lf\n",500.0/3.0);
} else if (T == 5) {
cout<<15<<endl;
} else if (T == 6) {
cout<<sqrt(6*6+9*9)<<endl;
} else if (T == 7) {
cout<<110<<endl<<90<<endl<<0<<endl;
} else if (T == 8) {
double const pi=3.141593;
double const r=5;
cout<<pi*r*2<<endl<<pi*r*r<<endl<<4.0/3*pi*r*r*r<<endl;
} else if (T == 9) {
cout<<22<<endl;
} else if (T == 10) {
cout<<9<<endl;
} else if (T == 11) {
cout<<100.0/(8-5)<<endl;
} else if (T == 12) {
cout<<13<<endl<<"R"<<endl;
} else if (T == 13) {
double const pi=3.141593;
double V=pi*4*4*4*4/3+pi*10*10*10*4/3;
cout<<floor(pow(V,1.0/3))<<endl;
} else if (T == 14) {
cout<<50<<endl;
}
return 0;
}
P5709 【深基2.习6】Apples Prologue / 苹果和虫子
代码如下:
#include<iostream>
#include<math.h>
using namespace std;
int main()
{
int m,t,s;
cin >> m >> t >> s;
int left = m - ceil(float(s)/t);
if(t == 0)
{
cout << "0";
}else
{
if(left < 0)
{
cout << "0";
}else
{
cout << left;
}
}
}
P5710 【深基3.例2】数的性质
代码如下:
#include<iostream>
using namespace std;
int A(int x)
{
int r = 0;
if (x % 2 == 0)
{
if (x > 4 && x <= 12)
{
r = 1;
}
}
return r;
}
int U(int x)
{
int r = 0;
if (x % 2 == 0)
{
r = 1;
}
if (x > 4 && x <= 12)
{
r = 1;
}
return r;
}
int B(int x)
{
int r = 0;
if (x % 2 == 0)
{
r = 1;
if (x > 4 && x <= 12)
{
r = 0;
}
}
if (x > 4 && x <= 12)
{
r = 1;
if (x % 2 == 0)
{
r = 0;
}
}
return r;
}
int Z(int x)
{
int r = 1;
if (x % 2 == 0)
{
r = 0;
}
if (x > 4 && x <= 12)
{
r = 0;
}
return r;
}
int main()
{
int x;
cin >> x;
cout << A(x) << " " << U(x) << " " << B(x) << " " << Z(x);
}
P5711 【深基3.例3】闰年判断
代码如下:
#include<iostream>
using namespace std;
int is_leap_year(int n)
{
int r = 0;
if (n % 4 == 0)
{
r = 1;
if (n % 100 == 0 && n % 400 != 0)
{
r = 0;
}
}
return r;
}
int main()
{
int n;
cin >> n;
cout << is_leap_year(n);
}
P5712 【深基3.例4】Apples
代码如下:
#include<iostream>
using namespace std;
int main()
{
int x;
cin >> x;
if(x <= 1)
{
cout << "Today, I ate " << x << " apple.";
}else
{
cout << "Today, I ate " << x << " apples.";
}
}
P5713 【深基3.例5】洛谷团队系统
代码如下:
#include<iostream>
using namespace std;
string compare(int n)
{
string r;
if (5 * n < 3 * n + 11)
{
r = "Local";
}
else
{
r = "Luogu";
}
return r;
}
int main()
{
int n;
cin >> n;
cout << compare(n);
}
P5714 【深基3.例7】肥胖问题
代码如下:
#include<iostream>
using namespace std;
int main()
{
float m,h;
cin >> m >> h;
float BMI = m/(h*h);
if(BMI < 18.5)
{
cout << "Underweight";
}
if(BMI >= 18.5 && BMI < 24)
{
cout << "Normal";
}
if(BMI >= 24)
{
cout << BMI << endl << "Overweight";
}
}
P5715 【深基3.例8】三位数排序
代码如下:
#include<iostream>
using namespace std;
int main()
{
int a,b,c,temp;
cin >> a >> b >> c;
if(a >= b)
{
temp = a;
a = b;
b = temp;
}
if(a >= c)
{
temp = a;
a = c;
c = temp;
}
if(b >= c)
{
temp = b;
b = c;
c = temp;
}
cout << a << " " << b << " " << c;
}
P5716 【深基3.例9】月份天数
代码如下:
#include<iostream>
using namespace std;
int is_leap_year(int y)
{
int r = 0;
if(y % 4 == 0)
{
r = 1;
if(y % 100 == 0 && y % 400 != 0)
{
r = 0;
}
}
return r;
}
int main()
{
int y,m;
cin >> y >> m;
if(m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12)
{
cout << "31";
}
if(m == 4 || m == 6 || m == 9 || m == 11)
{
cout << "30";
}
if(m == 2)
{
if(is_leap_year(y) == 1)
{
cout << "29";
}
if(is_leap_year(y) == 0)
{
cout << "28";
}
}
}
P1085 [NOIP 2004 普及组] 不高兴的津津
代码如下:
#include<bits/stdc++.h>
using namespace std;
int main(){
int hour[7],maxx = 0,ans=0;
for(int i=0;i<7;++i) {
int a,b;
cin >> a >> b;
hour[i] = a+b;
maxx = max(a+b,maxx);
}
for(int i=0;i<7;++i) {
if((hour[i] > 8) && (hour[i] == maxx)) {
ans = i+1;
break;
}
}
cout << ans;
}
P1909 [NOIP 2016 普及组] 买铅笔
代码如下:
#include<bits/stdc++.h>
using namespace std;
int main(){
int index = 1000000000;
float n;
cin >> n;
for(int i=0;i<n;++i){
float q;
int pri;
cin >> q >> pri;
index = min(index,int(ceil(n/q)*pri));
}
cout << index << endl;
}
P5717 【深基3.习8】三角形分类
代码如下:
#include <bits/stdc++.h>
using namespace std;
int main()
{
int l[3];
cin >> l[0] >> l[1] >> l[2];
// 调整长度
sort(l, l + 3, greater<int>()); // 大到小
if (l[1] + l[2] <= l[0]){
cout << "Not triangle" << endl;
}else {
if (l[1] * l[1] + l[2] * l[2] == l[0] * l[0]) cout << "Right triangle" << endl;
if (l[1] * l[1] + l[2] * l[2] > l[0] * l[0]) cout << "Acute triangle" << endl;
if (l[1] * l[1] + l[2] * l[2] < l[0] * l[0]) cout << "Obtuse triangle" << endl;
if (l[1] == l[2] || l[0] == l[1]) cout << "Isosceles triangle" << endl;
if (l[0] == l[2]) cout << "Equilateral triangle" << endl;
}
}
P1422 小玉家的电费
代码如下:
#include <stdio.h>
#include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
if (n <= 150)
{
printf("%.1f", 0.4463 * n);
}
else if (n <= 400)
{
printf("%.1f", 0.4463 * 150 + (n - 150) * 0.4663);
}
else
{
printf("%.1f", 0.4463 * 150 + 0.4663 * 250 + (n - 400) * 0.5663);
}
}
P1424 小鱼的航程(改进版)
代码如下:
#include <bits/stdc++.h>
using namespace std;
int main()
{
int x, n;
cin >> x >> n;
if (x > 5)
{
n -= (7 - x + 1);
int n_week_time = n / 7 * 1250;
int left;
if (n % 7 > 5)
{
left = 1250;
}
else
{
left = n % 7 * 250;
}
cout << n_week_time + left;
}
else
{
n = n - (7 - x + 1);
int first_week = (5 - x + 1) * 250;
int n_week_time = n / 7 * 1250;
int left;
if (n % 7 > 5)
{
left = 1250;
}
else
{
left = n % 7 * 250;
}
cout << first_week + n_week_time + left;
}
}
P1888 三角函数
代码如下:
#include <bits/stdc++.h>
using namespace std;
int gcd(int big, int small)
{
return 0 == small ? big : gcd(small, big % small);
}
int main()
{
int a[3];
cin >> a[0] >> a[1] >> a[2];
sort(a, a + 3);
// 最小锐角正弦值应该是最小边比上最大边
cout << a[0] / gcd(a[2], a[0]) << "/" << a[2] / gcd(a[2], a[0]);
}
P1046 [NOIP 2005 普及组] 陶陶摘苹果
代码如下:
#include<bits/stdc++.h>
using namespace std;
int main(){
int apple[11]={0};
for(int i=0;i<11;++i) {
cin >> apple[i];
}
int cnt=0,high = apple[10]+30;
for(int i=0;i<10;++i) {
if(apple[i] <= high) ++cnt;
}
cout << cnt;
}
P4414 [COCI 2006/2007 #2] ABC
代码如下:
#include <bits/stdc++.h>
using namespace std;
int main()
{
int num[3];
cin >> num[0] >> num[1] >> num[2];
sort(num, num + 3);
string s;
cin >> s;
cout << num[int(s[0] - 65)] << " " << num[int(s[1] - 65)]
<< " " << num[int(s[2] - 65)];
}
P1055 [NOIP 2008 普及组] ISBN 号码
代码如下:
#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
int a1,a2,a3,a4,a5,a6,a7,a8,a9;
char a0;
scanf("%1d-%1d%1d%1d-%1d%1d%1d%1d%1d-%c",&a1, &a2, &a3, &a4, &a5, &a6, &a7, &a8, &a9, &a0);
int a = (a1+a2*2+a3*3+a4*4+a5*5+a6*6+a7*7+a8*8+a9*9)%11;
if(int(a0-'0')==a || (a==10 && a0 == 'X')) cout << "Right";
else if(a==10) printf("%d-%d%d%d-%d%d%d%d%d-X",a1,a2,a3,a4,a5,a6,a7,a8,a9);
else printf("%d-%d%d%d-%d%d%d%d%d-%d",a1,a2,a3,a4,a5,a6,a7,a8,a9,a);
}