제출 #24060

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
24060		gs14004	Roller Coaster Railroad (IOI16_railroad)	C++11	0 / 100	599 ms	30132 KiB

railroad

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

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]]++;
	for(auto &i : mp) v.push_back(pi(i.first, i.second));
	bool shortage = 0;
	for(int i=1; i<v.size(); i++) v[i].second += v[i-1].second;
	for(int i=1; i<v.size(); i++){
		if(v[i-1].second < 0 && v[i].second + v[i-1].second < 0) return 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:13:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1; i<v.size(); i++) v[i].second += v[i-1].second;
                ^
railroad.cpp:14:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1; i<v.size(); i++){
                ^
railroad.cpp:12:7: warning: unused variable 'shortage' [-Wunused-variable]
  bool shortage = 0;
       ^

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• Subtask 4: 0 / 36