Submission #1195320

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<cstring>
using namespace std;

const int N=1e5+10;


int n,m,q;

int last[N],nx[N<<1],to[N<<1],tot;
int d[N],c[N],v[N];
int vis[N],us[N];

void Add(int x,int y)
{
	tot++;
	to[tot]=y;
	nx[tot]=last[x];
	last[x]=tot;
}

void dfs(int x,int C,int dep,int lim)
{
	if(dep>lim) return;
	if(vis[x]&&lim-dep<=us[x]) return;
	if(!vis[x]) vis[x]=C,us[x]=max(us[x],lim-dep);
	for(int j=last[x];j;j=nx[j])
		dfs(to[j],C,dep+1,lim);
}


int main()
{
	scanf("%d%d",&n,&m);
	for(int i=1;i<=m;i++)
	{
		int x,y;
		scanf("%d%d",&x,&y);
		Add(x,y);
		Add(y,x);
	}
	scanf("%d",&q);
	for(int i=1;i<=q;i++) scanf("%d%d%d",&v[i],&d[i],&c[i]);
	for(int i=q;i;i--)
		if(!vis[v[i]]||d[i]>us[v[i]]) dfs(v[i],c[i],0,d[i]);
	for(int i=1;i<=n;i++) printf("%d\n",vis[i]);
	return 0;
}
		
	
		

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:37:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
                     ^
./Main.cpp:41:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&x,&y);
                      ^
./Main.cpp:45:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&q);
                ^
./Main.cpp:46:57: 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",&v[i],&d[i],&c[i]);
                                                         ^

Judge Result