https://www.acmicpc.net/problem/10430
#include<stdio.h> int main() { int a,b,c; scanf("%d %d %d",&a,&b,&c); printf("%d\n",(a+b)%c); printf("%d\n",((a%c)+(b%c))%c); printf("%d\n",(a*b)%c); printf("%d\n",((a%c)*(b%c))%c); }