Backpacking

#include <string>

using namespace std;

int main(int argc, char* argv[])
{
    if(argc == 3)
    {
        string a = argv[1];
        string b = argv[2];
        int ia = stoi(a);
        int ib = stoi(b);
        int sum = ia + ib;
        printf("%d\n\r", sum);
        return sum;
    }
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER