#include<iostream>
#include<assert.h>

const int MAX_A=1000000000;

int main(){
    int n,m;std::cin >> n >> m;
    assert(1<=n && n<=2000);
    assert(1<=m && m<=2000);
    while(n--){
        long long a;
        std::cin >> a;
        assert(-MAX_A<=a && a<=MAX_A);
    }
}