Submission #1036135

#	Time	Username	Problem	Language	Result	Execution time	Memory
1036135		hmm789	Robots (IOI13_robots)	C++14	100 / 100	1111 ms	24412 KiB

robots

#include <bits/stdc++.h>
#include "robots.h"
using namespace std;

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
    sort(X, X+A);
    sort(Y, Y+B);
    pair<int, int> p[T];
    for(int i = 0; i < T; i++) {
        p[i].first = W[i];
        p[i].second = S[i];
    }
    sort(p, p+T);
    int l = 0, r = T+1, m;
    while(l < r) {
        m = (l+r)/2;
        priority_queue<int> pq;
        int idx = 0, ok = 1;
        for(int i = 0; i < A; i++) {
            while(idx < T && p[idx].first < X[i]) {
                pq.push(p[idx++].second);
            }
            for(int j = 0; j < m && pq.size(); j++) pq.pop();
        }
        while(idx < T) pq.push(p[idx++].second);
        for(int i = B-1; i >= 0; i--) {
            if(pq.size() && pq.top() >= Y[i]) {
                ok = 0;
                goto ed;
            }
            for(int j = 0; j < m && pq.size(); j++) pq.pop();
        }
        if(pq.size()) ok = 0;
        ed:;
        if(ok) r = m;
        else l = m+1;
    }
    if(l == T+1) return -1;
    else return l;
}

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