제출 #24057

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
24057		gs14004	Roller Coaster Railroad (IOI16_railroad)	C++11	0 / 100	543 ms	30132 KiB

railroad

#include "railroad.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pi;

// s[i] -> t[i]
// inf amount of i -> i+1, if needed
// outdegree = -1
// indegree = 1
// ok if eulerable in every comp.

map<int, int> mp;
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
	vector<pi> v;
    int n = (int) s.size();
    for(int i=0; i<n; i++) mp[s[i]]--, mp[t[i]]++;
  	bool shortage = 0;
  	for(auto &i : mp) v.push_back(pi(i.first, i.second));
  	for(int i=0; i<v.size(); i++){
        v[i+1].second -= v[i].second;
      	if(v[i].second < 0){
          	if(shortage) return 1;
          	shortage = 1;
        }
    }
    return 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:19:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i=0; i<v.size(); i++){
                  ^

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