제출 #152314

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
152314		starwh03	화살표 그리기 (KOI18_arrowH)	C++14	100 / 100	160 ms	7000 KiB

arrow

#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;
typedef pair<int,int> p;
p in[110000];
vector<int> apchuk;
vector<int> dis[110000];

int main()
{
    int n;
    cin>>n;
    long long tot=0;
    for(int i=0;i<n;i++)cin>>in[i].f>>in[i].s,apchuk.push_back(in[i].s);
    sort(apchuk.begin(),apchuk.end());
    apchuk.erase(unique(apchuk.begin(),apchuk.end()),apchuk.end());
    for(int i=0;i<n;i++)
    {
        in[i].s=lower_bound(apchuk.begin(),apchuk.end(),in[i].s)-apchuk.begin();
        dis[in[i].s].push_back(in[i].f);
    }
    for(int i=0;i<apchuk.size();i++)
    {
        int m=dis[i].size()-1;
        sort(dis[i].begin(),dis[i].end());
        for(int j=1;j<m;j++)tot+=min(dis[i][j]-dis[i][j-1],dis[i][j+1]-dis[i][j]);
        tot+=m>0?dis[i][m]-dis[i][m-1]+dis[i][1]-dis[i][0]:0;
    }
    cout<<tot;
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

arrow.cpp: In function 'int main()':
arrow.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<apchuk.size();i++)
                 ~^~~~~~~~~~~~~~

• Subtask 1: 21 / 21
• Subtask 2: 12 / 12
• Subtask 3: 29 / 29
• Subtask 4: 38 / 38