Submission #70408

#	Time	Username	Problem	Language	Result	Execution time	Memory
70408		Googal	Computer Network (BOI14_network)	C++14	100 / 100	149 ms	35544 KiB

network

#include <iostream>
#include <vector>

#include "network.h"

using namespace std;

const int NMAX = 1e3;

vector < int > p[1 + NMAX];

void findRoute (int n, int a, int b) {

  int dist = ping(a, b);

  for(int i = 1; i <= n; i++)
    if (i != a)
      p[ping(a, i) + 1].push_back(i);

  for(int d = 1; d <= dist; d++) {
    bool ok = false;

    for(int i = 1; i < p[d].size(); i++) {
      if(ping(a, p[d][i]) == 0) {
        if(dist == d + ping(p[d][i], b)) {
          a = p[d][i];
          travelTo(a);
          ok = true;
          break;
        }
      }
    }

    if (ok == false) {
      a = p[d][0];
      travelTo(a);
    }
  }

  travelTo(b);
}

Compilation message (stderr)

network.cpp: In function 'void findRoute(int, int, int)':
network.cpp:23:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 1; i < p[d].size(); i++) {
                    ~~^~~~~~~~~~~~~
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