Submission #377286

#	Time	Username	Problem	Language	Result	Execution time	Memory
377286		gustason	Robots (IOI13_robots)	C++14	100 / 100	2686 ms	24676 KiB

robots

#include "robots.h"
#include<bits/stdc++.h>
using namespace std;
const int INF = 1e9 + 5;

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
    sort(X, X+A);
    sort(Y, Y+B);
    vector<pair<int, int>> a(T);
    for(int i = 0; i < T; i++) {
        a[i] = {W[i], S[i]};
    }
    sort(a.begin(), a.end());

    int l = 0, r = INF, ans = INF;
    while(l <= r) {
        int mid = (l + r) / 2;
        priority_queue<int> q;

        int idx = 0;
        for(int i = 0; i < A; i++) {
            while(idx < T && X[i] > a[idx].first) {
                q.push(a[idx].second);
                idx++;
            }
            for(int j = 0; j < mid && !q.empty(); j++) {
                q.pop();
            }
        }
        while(idx < T) {
            q.push(a[idx].second);
            idx++;
        }
        for(int i = B-1; i >= 0; i--) {
            for(int j = 0; j < mid && !q.empty(); j++) {
                if (q.top() < Y[i]) {
                    q.pop();
                } else {
                    break;
                }
            }
        }

        if (q.empty()) {
            ans = mid;
            r = mid - 1;
        } else {
            l = mid + 1;
        }
    }

    if (ans == INF) return -1;
    return ans;
}

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