NZEC error in ADDREV problem

[prabinseth]

Hi Friends,

problem : ADDREV http://www.spoj.com/problems/ADDREV/

I am getting "runtime error (NZEC)" in following code when i submit. But i my pc g++ 4.9.2 it compiles fine and gives results too.Can anyone help me find out what i am doing wrong ?

#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<sstream>
int main()
{
    int num1,num2;
    std::string str, str1, str2;
    getline(std::cin,str);
    std::string buf;
    std::stringstream ss(str);
    std::vector<std::string> tokens;

while(ss >> buf)
    tokens.push_back(buf);


if(tokens.size() != 2)
    return 1;
else
{   
    str1=tokens[0];
    str2=tokens[1];
}   

int sumInt;
std::string sumStr;

std::reverse(std::begin(str1), std::end(str1));
num1=std::stoi(str1);


std::reverse(std::begin(str2), std::end(str2));
num2=std::stoi(str2);

sumInt= num1+num2;

sumStr=std::to_string(sumInt);
std::reverse(std::begin(sumStr), std::end(sumStr));
sumInt=std::stoi(sumStr);

std::cout<<sumInt<<std::endl;

return 0;
}

[luckymastermin]

1.Can you post what kind of test cases you have tried.
2.I don't understand why you are using string and string-stream this can be done easily with integers.

see the below code.[bbone=cpp,802]#include
using namespace std;

int rev(int n){
int x = 0;
while(n){
x = x*10 + n%10;
n/=10;
}
return x;
}
int main()
{

int num1,num2,tc;
cin>> tc;
while(tc--){
	cin >> num1 >> num2;
	cout<< (rev((rev(num1)+rev(num2))) )<<endl;
}

}

[/bbone]