ADDREV SPOJ

ADDREV.cpp

// contest: http://www.spoj.com/problems/ADDREV/
// author : Nguyen Minh Tuan (ititorit)
// lang   : C/C++

#include <bits/stdc++.h>
 
#define _for(i,a,b) for(int i=(a),_b_=(b),_d_=(a<b?1:-1);i!=_b_;i+=_d_)
#define FOR(i,a,b) for(int i = a; i <= b; i++)
#define _it(i,v) for (typeof((v).begin()) i = (v).begin(); i != (v).end(); ++i)
#define _all(v) v.begin(), v.end()
 
#define DEBUG(x) { cout << #x << " = " << x << endl; }
#define sqr(x) ((x)*(x))
 
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
 
int rev(int n) {
    int s = 0;
    while(n) {
        s = 10*s + n%10;
        n/=10;
    }
    return s;
}
 
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    // solution starts...
 
    int test, a, b;
    cin >> test;
    while(test--) {
        cin >> a >> b;
        cout << rev(rev(a) + rev(b)) << endl;
    }
  
    // solution ends...
 
    return 0;
}