一道双重循环的题目。请问为什么运行出错呢？

#include<iostream>
#include <vector>
using namespace std;

int array[4][5];

int main() {
    for (it i = 0; i < 4; ++i)
        for (int j = 0; j < 5; ++j) {
            cin >> array[i][j];
            if (array[i][j] == 16) {
                cout << "yes";
                return 0;
            }
            else cout "no";
        }
    return 0;
}