0_0_28341884_187.cpp: In member function 'void Tree::sum(int)':
0_0_28341884_187.cpp:24:13: error: 'x' was not declared in this scope
for(int i=x;i>0;i-=i&(-i))ans+=t[i];
^
0_0_28341884_187.cpp:25:10: error: return-statement with a value, in function returning 'void' [-fpermissive]
return ans;
^
0_0_28341884_187.cpp: In function 'void getroot(int, int, int)':
0_0_28341884_187.cpp:30:26: error: 'f' was not declared in this scope
int e=head[u];size[u]=1;f[u]=0;
^
0_0_28341884_187.cpp:34:6: error: 'v' was not declared in this scope
if(v!=ff && flag[v]==0){dfs(v,u);size[u]+=size[v];f[u]=max(f[u],size[v]);}
^
0_0_28341884_187.cpp:34:15: error: 'flag' was not declared in this scope
if(v!=ff && flag[v]==0){dfs(v,u);size[u]+=size[v];f[u]=max(f[u],size[v]);}
^
0_0_28341884_187.cpp:34:34: error: 'dfs' was not declared in this scope
if(v!=ff && flag[v]==0){dfs(v,u);size[u]+=size[v];f[u]=max(f[u],size[v]);}
^
0_0_28341884_187.cpp: At global scope:
0_0_28341884_187.cpp:37:2: error: 'f' does not name a type
f[u]=max(f[u],sum-size[u]);
^
0_0_28341884_187.cpp:38:2: error: expected unqualified-id before 'if'
if(f[u]<f[root])root=u;
^
0_0_28341884_187.cpp:39:2: error: expected unqualified-id before 'return'
return;
^
0_0_28341884_187.cpp:40:1: error: expected declaration before '}' token
}
^
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