Submission #764202

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
764202	2023-06-23 08:33:38	idkhandle	Crosses on the Grid (FXCUP4_cross)	C++17	8 / 100	40 ms	7400 KiB

cross

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#include "cross.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
ll SelectCross(int K, vector<int> I, vector<int> O) {
  int n = I.size();
  ll ans = 0;
  for (int i = 0; i < n; i++) {
    ans = max(ans, 2LL * O[i] * I[i] - (ll)I[i] * I[i]);
    // O^2 - 4 * ((O - I) / 2)^2 = O^2 - (O - I)^2 = 2OI - I^2
  }
  return ans;
}
 
 
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• Subtask 1: 8 / 8
• Subtask 2: 0 / 55
• Subtask 3: 0 / 37