Submission #53443

#	Time	Username	Problem	Language	Result	Execution time	Memory
53443		aome	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	124 ms	6236 KiB

railroad

#include "railroad.h"

#include <bits/stdc++.h>

using namespace std;

long long plan_roller_coaster(vector<int> s, vector<int> t) {
    int n = s.size();
    vector< pair<int, int> > vec;
    for (int i = 0; i < n; ++i) {
        vec.push_back({s[i], t[i]});
    }
    sort(vec.begin(), vec.end());
    t.push_back(1);
    sort(t.begin(), t.end());
    for (int i = 0; i < n; ++i) {
        int tmp = lower_bound(t.begin(), t.end(), vec[i].first + 1) - t.begin();
        if (vec[i].first >= vec[i].second && (i == 0 || vec[i - 1].first < vec[i].second)) tmp--;
        if (tmp < i + 1) return 1;
    }
    int p = 0;
    for (int i = 0; i < n; ++i) {
        if (vec[i].second > vec[p].second) p = i;
    }
    for (int i = 0; i < n; ++i) {
        if (i != p && vec[i].first >= vec[p].second) return 0;
    }
    for (int i = 0; i < n; ++i) {
        if (i != p && vec[p].first >= vec[i].second) return 0;
    }
    return 1;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36