1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | #include <iostream>
//Kisielinski Damian
using namespace std;
int main(int argc, char** argv) {
ios_base::sync_with_stdio(0);
int n, k, b, x, min=2020;
cin>>n>>k;
for (int r = 1; r <= n; r++) {
for (int p = 1; p <= r; p++) {
cin>>b;
x = (r+1-p)*p;
if (x<=k && b < min) {
min = b;
}
}
}
cout<<min<<endl;
return 0;
}
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