PAT1010

#include<iostream>using namespace std;int main() {    int a, n, i = 0;    cin >> a >> n;    if (n != 0) {        a *= n; n -= 1;        cout << a << " " << n;    }    else cout<<"0 0";//首项的指数为0    while (cin >> a >> n) {        if (n != 0) {            a *= n; n -= 1;            cout << " " << a << " " << n;        }       }    return 0;}

注意指数可能会小于0