DIU Mock Contest

#include <iostream>
using namespace std;

int main() {
    int a, b, c, d, e;
    char ch1, ch2;
    scanf("%d%*c%c %d%*c%c %d", &a, &ch1, &b, &ch2, &c);
    if((ch1=='+' || ch1=='-') && (ch2=='*' || ch2=='/')) {
        if(ch2=='*') d=b*c;
        else d=b/c;
        if(ch1=='+') e=a+d;
        else e=a-d;
    }
    else if((ch1=='*' || ch1=='/') && (ch2=='+' || ch2=='-')) {
        if(ch1=='*') d=b*a;
        else d=a/b;
        if(ch2=='+') e=c+d;
        else e=d-c;
    }
    else if((ch1=='*' || ch1=='/') && (ch2=='*' || ch2=='/')) {
        if(ch1=='*') d=b*a;
        else d=a/b;
        if(ch2=='*') e=c*d;
        else e=d/c;
    }
    else {
        if(ch2=='+') d=b+c;
        else d=b-c;
        if(ch1=='+') e=a+d;
        else e=a-d;
    }
    printf("%d\n", e);
    return 0;
}