Submission #65756

#	Time	Username	Problem	Language	Result	Execution time	Memory
65756		MiricaMatei	Computer Network (BOI14_network)	C++14	100 / 100	153 ms	47976 KiB

network

#include "network.h"
#include <bits/stdc++.h>
using namespace std;
vector<int>d[1005];

void findRoute (int N, int a, int b)
{
  int dist;
  for (int i = 1; i <= N; ++i) {
    if (i == b)
      continue;
    int x = ping(b, i) + 1;
    if (i == a)
      dist = x;
    d[x].push_back(i);
  }
  d[0].push_back(b);
  while (a != b) {
    dist--;
    for (auto it:d[dist])
      if (ping(it, a) == 0) {
        travelTo(it);
        a = it;
        break;
      }
  }
}

Compilation message (stderr)

network.cpp: In function 'void findRoute(int, int, int)':
network.cpp:8:7: warning: 'dist' may be used uninitialized in this function [-Wmaybe-uninitialized]
   int dist;
       ^~~~
grader.c: In function 'int main()':
grader.c:48:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf ("%d%d%d%d", &N, &a, &b, &M);
     ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
grader.c:51:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &distance[u][v]);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 25 / 25