제출 #1032159

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1032159		Turkhuu	Closing Time (IOI23_closing)	C++17	35 / 100	1071 ms	14420 KiB

closing

#include "closing.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int max_score(int N, int X, int Y, ll K, vector<int> U, vector<int> V, vector<int> W) {
    vector<ll> pfs(N);
    for (int i = 0; i < N - 1; i++) {
        pfs[i + 1] = pfs[i] + W[i];
    }
    auto dis = [&](int x, int y) {
        if (x > y) swap(x, y);
        return pfs[y] - pfs[x];
    };
    vector<ll> one(N), two(N), s1(N + 1), s2(N + 1);
    for (int i = 0; i < N; i++) {
        tie(one[i], two[i]) = minmax(dis(X, i), dis(Y, i));
        s1[i + 1] = s1[i] + one[i];
        s2[i + 1] = s2[i] + two[i];
    }
    int ans = 0;
    {
        auto a(one); sort(a.begin(), a.end());
        ll sum = 0; int cnt = 0;
        while (cnt < N && sum + a[cnt] <= K) sum += a[cnt++];
        ans = max(ans, cnt);
    }
    for (int i = 0; i <= Y; i++) {
        ll s = s1[N];
        int l = 0, r = N - 1;
        for (int j = i; j < N; j++) {
            if (r < j) s += two[j], r++;
            else s += two[j] - one[j];
            while (s > K && (l < min(i, X) || r > max(j, Y))) {
                if (l < min(i, X) && (r == max(j, Y) || one[l] > one[r])) s -= one[l++];
                else s -= one[r--];
            }
            if (s > K) break;
            ans = max(ans, j - i + 1 + r - l + 1);
        }
    }
    return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 8
• Subtask 2: 9 / 9
• Subtask 3: 12 / 12
• Subtask 4: 14 / 14
• Subtask 5: 0 / 9
• Subtask 6: 0 / 11
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 17