Submission #397850

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
397850	2021-05-03 09:38:17	maomao90	Hotspot (NOI17_hotspot)	C++14	100 / 100	812 ms	1192 KiB

hotspot

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#include <bits/stdc++.h>
using namespace std;
#define INF 1000000000
int n, m, k;
vector <int> adjList[5005];
int dist[5005], dist1[5005], times[5005], times1[5005];
queue <int> bfs;
double e[5005];
int ans = -1;
int main() {
  scanf("%d%d", &n, &m);
  for (int i = 0; i < m; i++) {
    int u, v; scanf("%d%d", &u, &v);
    adjList[u].push_back(v);
    adjList[v].push_back(u);
  }
  scanf("%d", &k);
  for (int i = 0; i < k; i++) {
    int a, b; scanf("%d%d", &a, &b);
    for (int j = 0; j < n; j++) dist[j] = INF, times[j] = 0;
    dist[a] = 0, times[a] = 1;
    bfs.push(a);
    while (!bfs.empty()) {
      int u = bfs.front(); bfs.pop();
      for (int v : adjList[u]) {
        if (dist[v] > dist[u] + 1) {
          dist[v] = dist[u] + 1;
 
 
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Compilation message (stderr)

hotspot.cpp: In function 'int main()':
hotspot.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   14 |  scanf("%d%d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~
hotspot.cpp:16:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |   int u, v; scanf("%d%d", &u, &v);
      |             ~~~~~^~~~~~~~~~~~~~~~
hotspot.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 |  scanf("%d", &k);
      |  ~~~~~^~~~~~~~~~
hotspot.cpp:22:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |   int a, b; scanf("%d%d", &a, &b);
      |             ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 11 / 11
• Subtask 4: 18 / 18
• Subtask 5: 26 / 26
• Subtask 6: 36 / 36