Submission #941932

#	Time	Username	Problem	Language	Result	Execution time	Memory
941932		Lalic	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	293 ms	25284 KiB

railroad

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

#define pb push_back
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(), x.rend()
#define mp make_pair

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5+10;
const int INF = 0x3f3f3f3f;
const ll LINF = 0x3f3f3f3f3f3f3f3f;
const int MOD = 1e9+7;

long long plan_roller_coaster(vector<int> s, vector<int> t) {
    vector<int> arr;
    for(auto u : s) arr.pb(u);
    for(auto u : t) arr.pb(u);
    sort(all(arr));
    arr.erase(unique(all(arr)), arr.end());
    
    int n=(int)arr.size();
    
    map<int, int> mp;
    vector<int> g(n, 0);
    for(int i=0;i<n;i++) mp[arr[i]]=i;
    
    g[n-1]++; g[0]--;
    for(int i=0;i<(int)s.size();i++){
		g[mp[s[i]]]++; g[mp[t[i]]]--;
	}
	
	int tot=0;
	for(int i=n-1;i>=0;i--){
		if(tot+g[i]<0) return 1;
		tot+=g[i];
	}
	
	//if(tot) return 1;
	return 0;
}

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