Submission #592192

#	Time	Username	Problem	Language	Result	Execution time	Memory
592192		Deepesson	Towns (IOI15_towns)	C++17	25 / 100	19 ms	856 KiB

towns

#include <bits/stdc++.h>
#define MAX 115
int getDistance(int i, int j);
int hubDistance(int N, int sub);
typedef std::pair<int,int> pii;
int dist[MAX][2];
pii MaisDistante(int N,int x,int p){
    int best=-1,alvo=0;
    for(int i=0;i!=N;++i){
        if(i==x)continue;
        int d = getDistance(i,x);
        if(d>best){
            best=d;
            alvo=i;
        }
        dist[i][p]=d;
    }
    return {best,alvo};
}
int hubDistance(int N, int sub) {
	pii alpha = MaisDistante(N,0,1);
	pii beta = MaisDistante(N,alpha.second,0);
	MaisDistante(N,beta.second,1);
	int d = beta.first;
	int ans=1e9;
	for(int i=0;i!=N;++i){
        if(i==alpha.second||i==beta.second)continue;
        int a = dist[i][0];
        int b = dist[i][1];
        int soma = a+b;
        int subt = soma-d;
        int base = subt/2;
        ans=std::min(ans,std::max(a,b)-base);
	}
	return ans;
}

Compilation message (stderr)

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:20:28: warning: unused parameter 'sub' [-Wunused-parameter]
   20 | int hubDistance(int N, int sub) {
      |                        ~~~~^~~

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