제출 #1098320

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1098320		alexander707070	도시들 (IOI15_towns)	C++14	0 / 100	9 ms	1112 KiB

towns

#include<bits/stdc++.h>
#include "towns.h"

#define MAXN 200

using namespace std;

int n,r;
int dist[MAXN],s,t,diameter,dist2[MAXN];

int hubDistance(int N, int sub) {
	int n=N;

	s=0;
	for(int i=1;i<n;i++){
		dist[i]=getDistance(0,i);
		if(dist[i]>dist[s])s=i;
	}

	dist[s]=0; t=s;
	for(int i=0;i<n;i++){
		if(i==s)continue;
		dist[i]=getDistance(s,i);

		if(dist[i]>dist[t])t=i;
	}

	diameter=dist[t]; r=1000000;
	
	for(int i=0;i<n;i++){
		if(i==s or i==t)continue;

		dist2[i]=getDistance(t,i);
		int sum=(diameter+dist[i]+dist2[i])/2;

		r=min(r,max(sum-dist[i],sum-dist2[i]));
	}

	return r;
}

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:12:6: warning: declaration of 'n' shadows a global declaration [-Wshadow]
   12 |  int n=N;
      |      ^
towns.cpp:8:5: note: shadowed declaration is here
    8 | int n,r;
      |     ^
towns.cpp:11:28: warning: unused parameter 'sub' [-Wunused-parameter]
   11 | int hubDistance(int N, int sub) {
      |                        ~~~~^~~

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