제출 #889939

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
889939		abcvuitunggio	도시들 (IOI15_towns)	C++17	25 / 100	12 ms	536 KiB

towns

#include "towns.h"
#include <bits/stdc++.h>
using namespace std;
int dist[111][111],C[111];
int d(int u, int v){
    if (u==v)
        return 0;
    if (u>v)
        swap(u,v);
    if (dist[u][v])
        return dist[u][v];
    return dist[u][v]=getDistance(u,v);
}
int hubDistance(int N, int sub){
    memset(dist,0,sizeof(dist));
    pair <int, int> mx={0,-1};
    for (int i=0;i<N;i++)
        mx=max(mx,{d(0,i),i});
    int u=mx.second;
    mx={0,-1};
    for (int i=0;i<N;i++)
        mx=max(mx,{d(u,i),i});
    int v=mx.second;
	int R=1e9,cnt[2]={0,0};
	for (int i=0;i<N;i++)
        R=min(R,abs(d(i,u)-d(i,v)));
    R=(R+d(u,v))/2;
    vector <int> a,b,tmp;
    for (int i=0;i<N;i++){
        int val=d(i,u)-d(i,v);
        if (val<-R)
            cnt[0]++;
        if (val==-R)
            a.push_back(i);
        if (val==R)
            b.push_back(i);
        if (val>R)
            cnt[1]++;
    }
    if (max(cnt[0],cnt[1])>N/2)
        return -R;
    if (sub==4)
        return (max(a.size(),b.size())>N/2?-R:R);
    return R;
}

컴파일 시 표준 에러 (stderr) 메시지

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:43:39: warning: comparison of integer expressions of different signedness: 'const long unsigned int' and 'int' [-Wsign-compare]
   43 |         return (max(a.size(),b.size())>N/2?-R:R);
      |                 ~~~~~~~~~~~~~~~~~~~~~~^~~~

• Subtask 1: 13 / 13
• Subtask 2: 12 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 13
• Subtask 6: 0 / 39