Submission #1192301

#	Time	Username	Problem	Language	Result	Execution time	Memory
1192301		Mousa_Aboubaker	Roller Coaster Railroad (IOI16_railroad)	C++20	0 / 100	62 ms	4292 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();
    // each s_i must have a t_i less than or equal to it
    vector<int> ord(n);
    iota(ord.begin(), ord.end(), 0);
    sort(ord.begin(), ord.end(), [&](int l, int r)
         { return s[l] < s[r]; });
    bool can = true;
    for (int i = 0; i + 1 < n; i++)
    {
        int j = ord[i], k = ord[i + 1];
        can &= t[j] <= s[k];
    }
    if (not can)
    {
        sort(ord.begin(), ord.end(), [&](int l, int r)
             { if(t[l] != t[r])
                return t[l] > t[r];
            return s[l] < s[r]; });
        can = true;
        for (int i = 0; i + 1 < n; i++)
        {
            int j = ord[i], k = ord[i + 1];
            can &= t[j] <= s[k];
        }
        if(not can)
        return 1;
    }
    return 0;
}

Compilation message (stderr)

railroad.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
railroad_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

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