Submission #119476

#	Time	Username	Problem	Language	Result	Execution time	Memory
119476		sealnot123	Towns (IOI15_towns)	C++14	25 / 100	20 ms	504 KiB

towns

#ifdef LOCAL
#include "grader.cpp"
#endif

#include "towns.h"
#include<bits/stdc++.h>
#define x first
#define y second
#define pb push_back
#define eb emplace_back
#define all(a) (a).begin(),(a).end()
#define SZ(a) (int)(a).size()
using namespace std;
typedef long long LL;
typedef pair<LL,LL> PLL;
typedef pair<int,int> PII;
typedef double D;
typedef long double LD;
const int N=115;
int dist[N][N];
int hubDistance(int n, int sub) {
	int R = 1<<30;
	memset(dist, 0, sizeof dist);
	int a,b,c,d,e,i,j,k,l;
	a = 0; c = 0;
	for(i=1;i<n;i++){
        b = getDistance(0, i);
        if(b > a) a = b, c = i;
	}
	a = 0;
	for(i=0;i<n;i++){
        if(i==c) continue;
        dist[c][i] = getDistance(c, i);
        if(dist[c][i] > a) a = dist[c][i], d = i;
	}
    for(i=0;i<n;i++){
        if(i==d) continue;
        dist[d][i] = getDistance(d, i);
    }
    for(i=0;i<n;i++){
        if(i==c || i==d) continue;
        a = (dist[c][i] + dist[d][i] - dist[c][d])>>1;
        R = min(R, max(dist[c][i], dist[d][i]) - a);
    }
	return R;
}

Compilation message (stderr)

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:24:14: warning: unused variable 'e' [-Wunused-variable]
  int a,b,c,d,e,i,j,k,l;
              ^
towns.cpp:24:18: warning: unused variable 'j' [-Wunused-variable]
  int a,b,c,d,e,i,j,k,l;
                  ^
towns.cpp:24:20: warning: unused variable 'k' [-Wunused-variable]
  int a,b,c,d,e,i,j,k,l;
                    ^
towns.cpp:24:22: warning: unused variable 'l' [-Wunused-variable]
  int a,b,c,d,e,i,j,k,l;
                      ^
towns.cpp:21:28: warning: unused parameter 'sub' [-Wunused-parameter]
 int hubDistance(int n, int sub) {
                            ^~~
towns.cpp:24:12: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized]
  int a,b,c,d,e,i,j,k,l;
            ^

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