csu1018

#include <iostream>using namespace std; int main(){    int T,t0 = 0;    int a,b,c;    int t1 = 0,t2 = 0,t3 = 0,t4 = 0;    cin >> T;    while(t0 < T)    {        cin >> a >> b;        if((a > 0) && (b > 0))        {            c = a * b;            t1 = c % 10;            t2 = ((c - t1) / 10) % 10;            t3 = ((c - t1 - t2 * 10) / 100) % 10;            t4 = ((c - t1 - t2 * 10 - t3 * 100) / 1000) % 10;            c = t1 + t2 * 10 + t3 * 100 + t4 * 1000;            if(c >= 1000)                cout << c << endl;            else if(c >= 100)                cout << '0' << c << endl;            else if(c >= 10)                cout << '0' << '0' << c << endl;            else                cout << '0' << '0' << '0' << c << endl;        }        t0 = t0 + 1;    }    return 0;}