0_0_20999539_4138.cpp: In function 'void init()':
0_0_20999539_4138.cpp:3:12: error: 'd' was not declared in this scope
memset(d,0,sizeof(d));
^
0_0_20999539_4138.cpp:3:25: error: 'memset' was not declared in this scope
memset(d,0,sizeof(d));
^
0_0_20999539_4138.cpp:4:12: error: 'vis1' was not declared in this scope
memset(vis1,0,sizeof(vis1));
^
0_0_20999539_4138.cpp:5:13: error: 'vis2' was not declared in this scope
memset(vis2,0,sizeof(vis2));
^
0_0_20999539_4138.cpp:6:20: error: 'N' was not declared in this scope
for(int i=0;i<N;i++) g[i].clear();
^
0_0_20999539_4138.cpp:6:27: error: 'g' was not declared in this scope
for(int i=0;i<N;i++) g[i].clear();
^
0_0_20999539_4138.cpp: In function 'void dfs(int, int)':
0_0_20999539_4138.cpp:10:5: error: 'd' was not declared in this scope
d[u]=d[fa]+1;
^
0_0_20999539_4138.cpp:11:8: error: 'vis1' was not declared in this scope
if(vis1[d[u]])
^
0_0_20999539_4138.cpp:14:10: error: 'f' was not declared in this scope
{f=1;
^
0_0_20999539_4138.cpp:19:13: error: 'g' was not declared in this scope
int len=g[u].size();
^
0_0_20999539_4138.cpp:20:15: error: 'vis2' was not declared in this scope
if(len>1) vis2[u]=1;
^
0_0_20999539_4138.cpp:27:24: error: 'vis2' was not declared in this scope
if(u!=fa&&vis2[fa]) f=1;
^
0_0_20999539_4138.cpp:27:34: error: 'f' was not declared in this scope
if(u!=fa&&vis2[fa]) f=1;
^
0_0_20999539_4138.cpp: In function 'int main()':
0_0_20999539_4138.cpp:35:25: error: 'scanf' was not declared in this scope
while(~scanf("%d",&n))
^
0_0_20999539_4138.cpp:41:13: error: 'g' was not declared in this scope
g[u].push_back(v);
^
0_0_20999539_4138.cpp:44:9: error: 'f' was not declared in this scope
f=0;
^
0_0_20999539_4138.cpp:46:24: error: 'puts' was not declared in this scope
if(f) puts("NO");
^
0_0_20999539_4138.cpp:47:24: error: 'puts' was not declared in this scope
else puts("YES");
^
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