제출 #837564

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
837564		oscar1f	도시들 (IOI15_towns)	C++17	25 / 100	16 ms	360 KiB

towns

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

using namespace std;

const int MAX_SOM=115,INFINI=1000*1000*1000;
int nbSom,deb,fin,rep,distDeb,distFin;
int dist[MAX_SOM][MAX_SOM];

int calcDist(int a,int b) {
	if (a==b) {
		return 0;
	}
	if (a>b) {
		swap(a,b);
	}
	if (dist[a][b]!=-1) {
		return dist[a][b];
	}
	dist[a][b]=getDistance(a,b);
	return dist[a][b];
}

int plusLoin(int a) {
	int posMax=0,valMax=0;
	for (int i=0;i<nbSom;i++) {
		if (calcDist(a,i)>valMax) {
			valMax=calcDist(a,i);
			posMax=i;
		}
	}
	return posMax;
}

int hubDistance(int N, int sub) {
	nbSom=N;
	for (int i=0;i<nbSom;i++) {
		for (int j=0;j<nbSom;j++) {
			dist[i][j]=-1;
		}
	}
	deb=plusLoin(0);
	fin=plusLoin(deb);
	/*cout<<deb<<" "<<fin<<endl;
	for (int i=0;i<nbSom;i++) {
		for (int j=0;j<nbSom;j++) {
			cout<<dist[i][j]<<" ";
		}
		cout<<endl;
	}*/
	rep=INFINI;
	for (int i=0;i<nbSom;i++) {
		if (i!=deb and i!=fin) {
			distDeb=(calcDist(deb,fin)+calcDist(deb,i)-calcDist(i,fin))/2;
			distFin=(calcDist(deb,fin)-calcDist(deb,i)+calcDist(i,fin))/2;
			rep=min(rep,max(distDeb,distFin));
		}
	}
	return rep;
}

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:35:28: warning: unused parameter 'sub' [-Wunused-parameter]
   35 | int hubDistance(int N, int sub) {
      |                        ~~~~^~~

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• Subtask 2: 12 / 12
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