#include<stdio.h>

int main () {

long int n,a,b,c;

scanf("%d",&n);

for(int i = 0; i < n; i++) {

scanf("%ld %ld %ld",&a,&b,&c);

switch(a) {

case 1:

printf("%ld\n",b + c);

break;

case 2:

printf("%ld\n",b - c);

break;

case 3:

printf("%ld\n",b * c);

break;

case 4:

printf("%ld\n",b / c);

break;

}

}

return 0;

}

使用long int 記得是%ld