#include<stdio.h>intmain(void){
int i,j,k;for(i =1;i <5;i++){
for(j =1;j <5;j++){
if(i == j)continue;for(k =1;k <5;k++){
if(i == k || j == k)continue;printf("%d,%d,%d\n",i,j,k);}}}return0;}
#include<stdio.h>#include<math.h>intmain(void){
int flag =0;long n =-10000;while(n <10000){
if(n +100==(int)sqrt(n +100)*sqrt(n +100)&& n +268==(int)sqrt(n +268)*sqrt(n +268)){
printf("%ld\n",n);}
n++;}return0;}
#include<stdio.h>intIsLeap(int year){
if((year%4==0&&year%100!=0)||(year%400==0))return1;elsereturn0;}intmain(void){
int monthday[2][13]={
{
0,31,28,31,30,31,30,31,31,30,31,30,31},{
0,31,29,31,30,31,30,31,31,30,31,30,31}};