1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
#include <iostream>
using namespace std;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,k,m,mini=200000;
    cin>>n>>k;
    for(int i=1;i<=n;++i){
        for(int j=0;j<i;++j){
            cin>>m;
            if((j+1)*(i-j)<=k){
                mini=min(m,mini);}}}
    cout<<mini;
    return 0;}