제출 #1031683

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1031683		pcc	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	111 ms	7332 KiB

railroad

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

#define ll long long
#define pii pair<int,int>
#define fs first
#define sc second
#define pll pair<ll,ll>
#define _all(T) T.begin(),T.end()

//claim always can be connected

const ll inf = 1e18;
const int mxn = 2e5+10;
vector<int> all;
int deg[mxn*3];

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
	int N = (int)s.size();
	all.push_back(0);
	for(auto &i:s)all.push_back(i);
	for(auto &i:t)all.push_back(i);
	sort(_all(all));all.resize(unique(_all(all))-all.begin());
	for(auto &i:s)i = lower_bound(_all(all),i)-all.begin();
	for(auto &i:t)i = lower_bound(_all(all),i)-all.begin();
	s.push_back(all.size()-1);
	t.push_back(1);
	for(auto &i:t)deg[i]--;
	for(auto &i:s)deg[i]++;
	for(int i = all.size()-1;i>=0;i--){
		deg[i] += deg[i+1];
	}
	return *min_element(deg,deg+all.size())<0;
}

컴파일 시 표준 에러 (stderr) 메시지

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:20:6: warning: unused variable 'N' [-Wunused-variable]
   20 |  int N = (int)s.size();
      |      ^

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