Submission #1606159

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Source Code Expand

#include<bits/stdc++.h>
const int N=2e5+9;
using namespace std;
int edgenum,w[N],clo[N],pos[N],d[N];
int to[N],nxt[N],head[N],n,m,q,tot;
void addedge(int from,int too)
{
	++edgenum;nxt[edgenum]=head[from];to[edgenum]=too;head[from]=edgenum;
	++edgenum;nxt[edgenum]=head[too];to[edgenum]=from;head[too]=edgenum;
}
void dfs(int now,int last,int dis,int color)
{
	 if(last>dis) return;
	 if(w[now]==0) w[now]=color,tot++;
	 if(tot>=n) return;
	 for(int i=head[now];i;i=nxt[i])
	 {
	 	int too=to[i];
	// 	if(w[too]==0)
		  dfs(too,last+1,dis,color);
	 }
} 
int main()
{
	scanf("%d%d",&n,&m);
	for(int i=1;i<=m;++i)
    {
    	 int x,y;
    	 scanf("%d%d",&x,&y);
    	 addedge(x,y);
	}
	scanf("%d",&q);
	for(int i=1;i<=q;++i) scanf("%d%d%d",&pos[i],&d[i],&clo[i]);
	for(int i=q;i>=1;--i) dfs(pos[i],0,d[i],clo[i]);
	
	for(int i=1;i<=n;++i)
	 printf("%d\n",w[i]);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:25:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:29:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d%d",&x,&y);
                          ^
./Main.cpp:32:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&q);
                ^
./Main.cpp:33:61: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=q;++i) scanf("%d%d%d",&pos[i],&d[i],&clo[i]);
                                                             ^

Judge Result