Submission #103030

#	Time	Username	Problem	Language	Result	Execution time	Memory
103030		Osama_Alkhodairy	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	571 ms	25072 KiB

railroad

#include <bits/stdc++.h>
#include "railroad.h"
using namespace std;
#define ll long long

map <int, int> m;

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
    s.push_back(1e9);
    t.push_back(1);
    int n = s.size();
    for(int i = 0 ; i < n ; i++){
        int l = s[i], r = t[i];
        if(l > r) swap(l, r);
        if(l == r) assert(false);
        if(s[i] < t[i]) m[l]++, m[r]--;
        else m[l]--, m[r]++;
    }
    int sum = 0;
    for(auto &i : m){
        sum += i.second;
        if(sum > 0) return 1;
    }
    return 0;
}

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