Submission #156906

#	Time	Username	Problem	Language	Result	Execution time	Memory
156906		TAISA_	Robots (IOI13_robots)	C++14	100 / 100	2511 ms	29944 KiB

robots

#include "robots.h"
#include <bits/stdc++.h>
using namespace std;
using P = pair<int, int>;
int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
    int ng = 0, ok = T + 1;
    vector<P> v;
    for (int i = 0; i < T; i++) {
        v.push_back(P(W[i], S[i]));
    }
    sort(v.begin(), v.end());
    sort(X, X + A);
    sort(Y, Y + B);
    vector<int> f(T);
    while (ok - ng > 1) {
        int mid = (ok + ng) / 2;
        int id = 0;
        fill(f.begin(), f.end(), 0);
        priority_queue<P> q;
        for (int i = 0; i < A; i++) {
            while (id < T && v[id].first < X[i]) {
                q.push(P(v[id].second, id));
                id++;
            }
            int c = mid;
            while (c > 0 && !q.empty()) {
                int to = q.top().second;
                q.pop();
                f[to] = 1;
                --c;
            }
        }
        priority_queue<int, vector<int>, greater<int>> q2;
        while (!q.empty()) {
            q2.push(q.top().first);
            q.pop();
        }
        for (; id < T; id++) {
            q2.push(v[id].second);
        }
        for (int i = 0; i < B; i++) {
            int c = mid;
            while (c > 0 && !q2.empty()) {
                if (q2.top() >= Y[i]) {
                    break;
                }
                q2.pop();
                --c;
            }
        }
        if (q2.empty()) {
            ok = mid;
        } else {
            ng = mid;
        }
    }
    if (ok == T + 1) {
        return -1;
    }
    return ok;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 10 / 10