Submission #883277

#TimeUsernameProblemLanguageResultExecution timeMemory
883277votranngocvySure Bet (CEOI17_sure)C++14
0 / 100
1 ms2516 KiB
#include <bits/stdc++.h> using namespace std; const int N = 1e5 + 5; double a[N],b[N],sumA[N],sumB[N]; signed main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n; cin >> n; for (int i = 1; i <= n; i++) cin >> a[i] >> b[i]; sort(a + 1,a + n + 1,greater<double>()); sort(b + 1,b + n + 1,greater<double>()); sumA[0] = 0,sumB[0] = 0; for (int i = 1; i <= n; i++) { sumA[i] = sumA[i - 1] + a[i]; sumB[i] = sumB[i - 1] + b[i]; } int j = 1; double ans = 0; for (int i = 1; i <= n; i++) { while (j <= n && sumA[i] + sumB[j] - i - j <= sumA[i] + sumB[j - 1] - i - j - 1) j++; ans = max(ans,min(sumA[i],sumB[j]) - i - j); } cout << fixed << setprecision(4) << ans << "\n"; }
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