1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #include <bits/stdc++.h>
using namespace std;
int main(){
int n,k;
cin>>n>>k;
int ans = INT_MAX;
for(int row=0;row<n;row++){
for(int col=0 ; col<row+1 ; col++){
int year;
cin>>year;
int cost = (col+1)*(row-col+1);
if(cost <= k)
ans = min(year,ans);
}
}
cout << ans << endl;
}
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