Submission #711306

#	Time	Username	Problem	Language	Result	Execution time	Memory
711306		kostia244	Team Contest (JOI22_team)	C++17	73 / 100	2054 ms	8524 KiB

team

#include<bits/stdc++.h>
#define all(x) begin(x), end(x)
using namespace std;
using ll = long long;
const int inf = 1<<28;

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;
    vector<array<int, 3>> a(n);
    vector<int> Y, yid(n), A(n, -inf), B(n, inf);
    for(auto &[x, y, z] : a) {
        cin >> x >> y >> z;
        Y.push_back(y);
    }
    sort(all(a));
    a.erase(unique(all(a)), a.end());
    sort(all(Y));
    Y.erase(unique(all(Y)), Y.end());
    for(int i = 0; i < n; i++)
        yid[i] = lower_bound(all(Y), a[i][1]) - Y.begin();
    n = a.size();

    auto add = [&](int i) {
        int y_id = yid[i];
        int z = a[i][2];
        B[y_id] = min(B[y_id], z);
        A[y_id] = max(A[y_id], z);
    };
    auto query = [&](int ly, int z) {
        int ans = -inf;
        int zmax = -inf;
        for(int i = 0; i < Y.size(); i++) {
            if(zmax > z && i > ly && (zmax > B[i])) {
                ans = max(ans, zmax + Y[i]);
            }
            zmax = max(zmax, A[i]);
        }
        return ans;
    };

    int ans = -1;
    for(int j = 0, i = 0; i < n; i++) {//z
        while(a[j][0] < a[i][0]) {
            add(j++);
        }
        ans = max(ans, a[i][0] + query(yid[i], a[i][2]));
    }
    cout << ans << '\n';
}

Compilation message (stderr)

team.cpp: In lambda function:
team.cpp:34:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for(int i = 0; i < Y.size(); i++) {
      |                        ~~^~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 0 / 27