Submission #1352146

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int n, m, q, col[100005][15];
int a[100005], b[100005], c[100005];
vector<int> adj[100005];

void bfs (int I, int D, int V) {
	queue<pair<int,int> > Q;
	col[I][D] = V;
	Q.push({I, D});
	while(!Q.empty()) {
		int A = Q.front().first, B = Q.front().second;
		Q.pop();
		for(auto &X : adj[A]) {
			if(col[X][B-1]) continue;
			col[X][B-1] = V;
			if(B-1) Q.push({X, B-1});
		}
	}
}

int main()
{
	scanf("%d%d",&n,&m);
	for(int i=1;i<=m;i++) {
		int A, B;
		scanf("%d%d",&A,&B);
		adj[A].push_back(B);
		adj[B].push_back(A);
	}
	scanf("%d",&q);
	for(int i=1;i<=q;i++) {
		scanf("%d%d%d",&a[i],&b[i],&c[i]);
	}
	for(int i=q;i>=1;i--) {
		if(!col[a[i]][b[i]]) bfs(a[i], b[i], i);
	}
	for(int i=1;i<=n;i++) {
		int A = 0;
		for(int j=0;j<=10;j++) {
			A = max(A, col[i][j]);
		}
		printf("%d\n",c[A]);
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:24:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:27:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&A,&B);
                      ^
./Main.cpp:31:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&q);
                ^
./Main.cpp:33:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&a[i],&b[i],&c[i]);
                                    ^

Judge Result