제출 #420561

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
420561		LouayFarah	도시들 (IOI15_towns)	C++14	컴파일 에러	0 ms	0 KiB

towns

#include "bits/stdc++.h"
#include "towns.h"
using namespace std;

vector<vector<int>> dist;
vector<int> em;

int getDistance(int i, int j);

long long min(long long a, long long b)
{
    if(a<=b)
        return a;
    return b;
}

long long hubDistance(int n, int sub)
{
    em.assign(0, n);
    dist.assign(n, em);

    for(int i = 0; i<n; i++)
    {
        for(int j = i+1; j<n; j++)
        {
            int d = getDistance(i, j);
            dist[i][j] = d;
            dist[j][i] = d;
        }
    }

    long long R = 1e18;

    for(int i = 0; i<n; i++)
    {
        for(int j = i+1; j<n; j++)
        {
            int node = -1;
            long long maxi = -1;
            for(int k = 0; k<n; k++)
            {
                if(k==i||k==j)
                    continue;

                if(dist[i][k]+dist[j][k]>maxi)
                {
                    maxi = dist[i][k] + dist[j][k];
                    node = k;
                }
            }

            long long temp = (dist[i][node] + dist[j][node] - dist[i][j])/2;
            R = min(R, temp);
        }
    }

    return R;
}

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp:17:11: error: ambiguating new declaration of 'long long int hubDistance(int, int)'
   17 | long long hubDistance(int n, int sub)
      |           ^~~~~~~~~~~
In file included from towns.cpp:2:
towns.h:5:5: note: old declaration 'int hubDistance(int, int)'
    5 | int hubDistance(int N, int sub);
      |     ^~~~~~~~~~~
towns.cpp: In function 'long long int hubDistance(int, int)':
towns.cpp:17:34: warning: unused parameter 'sub' [-Wunused-parameter]
   17 | long long hubDistance(int n, int sub)
      |                              ~~~~^~~