#include <stdio.h>

int main() {

    //실습1//
   /*printf("5*3/2\n");
    printf("7*7*3.14\n");
    printf("4.5*4.5*4.5\n");*/

    //실습3//
    printf("%d\n", 5+3);
    printf("%d\n",7*2-4);
    printf("%d\n", 15/2);
    
    return 0;
}