/* Helloプログラム */
#include <stdio.h>
main()
{
int a=-1;
if(a<0){
}
int b=1;
if(b=1){
}else{if(b=2){
}else{if(b=3){
}
}
}
int c=2024;
if ((c%100==0)&&(c%400!=0)){
}else if(c%4==0){
}else{
}
}
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