Submission #552732

#	Time	Username	Problem	Language	Result	Execution time	Memory
552732		iancu	Towns (IOI15_towns)	C++14	Compilation error	0 ms	0 KiB

towns

#include "towns.h"
#include <vector>

using namespace std;

int hubDistance(int N, int sub) {
  vector<vector<int>> dist(N, vector<int>(N, -1));
  int getDist = [&dist](int a, int b) {
    if (dist[a][b] == -1)
      dist[a][b] = dist[b][a] = getDistance(a, b);
    return dist[a][b];
  };
  int D1, D2, dist_max = 0;
  for (int i = 1; i < N; ++i)
    if (getDist(0, i) > dist_max) {
      dist_max = getDist(0, i);
      D1 = i;
    }
  dist_max = 0;
  for (int i = 0; i < N; ++i)
    if (i != D1 && getDist(D1, i) > dist_max) {
      dist_max = getDist(D1, i);
      D2 = i;
    }
  int R = getDist(D1, D2);
  for (int i = 0; i < N; ++i)
    if (i != D1 && i != D2) {
      int dist_i = (getDist(D1, i) - getDist(D2, i) + getDist(D1, D2)) / 2;
      R = min(R, max(dist_i, getDist(D1, D2) - dist_i));
    }
  return R;
}

Compilation message (stderr)

towns.cpp: In function 'int hubDistance(int, int)':
towns.cpp:12:3: error: cannot convert 'hubDistance(int, int)::<lambda(int, int)>' to 'int' in initialization
   12 |   };
      |   ^
towns.cpp:15:21: error: 'getDist' cannot be used as a function
   15 |     if (getDist(0, i) > dist_max) {
      |                     ^
towns.cpp:16:30: error: 'getDist' cannot be used as a function
   16 |       dist_max = getDist(0, i);
      |                              ^
towns.cpp:21:33: error: 'getDist' cannot be used as a function
   21 |     if (i != D1 && getDist(D1, i) > dist_max) {
      |                                 ^
towns.cpp:22:31: error: 'getDist' cannot be used as a function
   22 |       dist_max = getDist(D1, i);
      |                               ^
towns.cpp:25:25: error: 'getDist' cannot be used as a function
   25 |   int R = getDist(D1, D2);
      |                         ^
towns.cpp:28:34: error: 'getDist' cannot be used as a function
   28 |       int dist_i = (getDist(D1, i) - getDist(D2, i) + getDist(D1, D2)) / 2;
      |                                  ^
towns.cpp:28:51: error: 'getDist' cannot be used as a function
   28 |       int dist_i = (getDist(D1, i) - getDist(D2, i) + getDist(D1, D2)) / 2;
      |                                                   ^
towns.cpp:28:69: error: 'getDist' cannot be used as a function
   28 |       int dist_i = (getDist(D1, i) - getDist(D2, i) + getDist(D1, D2)) / 2;
      |                                                                     ^
towns.cpp:29:44: error: 'getDist' cannot be used as a function
   29 |       R = min(R, max(dist_i, getDist(D1, D2) - dist_i));
      |                                            ^
towns.cpp:6:28: warning: unused parameter 'sub' [-Wunused-parameter]
    6 | int hubDistance(int N, int sub) {
      |                        ~~~~^~~