제출 #429138

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
429138	2021-06-15 17:47:26	Antekb	Roller Coaster Railroad (IOI16_railroad)	C++14	100 / 100	849 ms	57504 KiB

railroad

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#include "railroad.h"
#include<bits/stdc++.h>
#define st first
#define nd second
using namespace std;
typedef long long ll;
const int N=4e5+5;
vector<int> E[N];
int r[N];
int find(int v){
  if(r[v]==v)return v;
  return r[v]=find(r[v]);
}
void Union(int u, int v){
  r[u]=v;
}
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
  iota(r, r+N, 0);
    int n = (int) s.size();
    n++;
    s.push_back(2e9);
    t.push_back(1);
    vector<pair<int, int> > V;
    unordered_map<int, int> M;
    int wsk=0;
    for(int i=0; i<n; i++){
      if(M.find(t[i])==M.end())M[t[i]]=wsk++;
      if(M.find(s[i])==M.end())M[s[i]]=wsk++;
      V.push_back({s[i], -1});
      V.push_back({t[i], 1});
 
 
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컴파일 시 표준 에러 (stderr) 메시지

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:42:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for(int i=0; i<V.size(); i++){
      |                  ~^~~~~~~~~
railroad.cpp:53:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |   if(i+1<V.size() && V[i].st!=V[i+1].st){
      |      ~~~^~~~~~~~~
railroad.cpp:69:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |     for(int i=0; i<edg.size(); i++){
      |                  ~^~~~~~~~~~~

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