Submission #1194621

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define REP(i, n) for (int i = 0; i < int(n); ++i)
#define REPE(i, a, b) for (int i = (a); i <= int(b); ++i)
#define SZ(x) ((int)(x).size())
#define ALL(x) x.begin(), x.end()
#define PB push_back
#define EB emplace_back
using LL = long long;
using PII = pair<int, int>;
#define F first
#define S second

int n, m, q;
vector<int> g[100010];
int a[100010];
int d[100010];
void f(int s, int mx, int c) {
  queue<int> q;
  q.push(s);
  fill(d, d + n + 1, -1);
  d[s] = 0;
  while (q.size()) {
    int x = q.front(); q.pop();
    a[x] = c;
    if (d[x] >= mx) continue;
    for (int y : g[x]) if (d[y] == -1) {
      d[y] = d[x] + 1;
      q.push(y);
    }
  }
}

int main() {
  scanf("%d%d", &n, &m);
  REP(i, m) {
    int u, v;
    scanf("%d%d", &u, &v);
    g[u].PB(v);
    g[v].PB(u);
  }
  scanf("%d", &q);
  while (q--) {
    int u, d, c;
    scanf("%d%d%d", &u, &d, &c);
    f(u, d, c);
  }
  REPE(i, 1, n) printf("%d\n", a[i]);
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:35:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &n, &m);
                        ^
./Main.cpp:38:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &u, &v);
                          ^
./Main.cpp:42:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &q);
                  ^
./Main.cpp:45:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &u, &d, &c);
                                ^

Judge Result