0_0_29392685_31400.cpp: In function 'int dfs(int, int)':
0_0_29392685_31400.cpp:70:15: error: 's' was not declared in this scope
for(int i=s[u];~i;i=edge[i].nt)
^
0_0_29392685_31400.cpp:70:25: error: 'edge' was not declared in this scope
for(int i=s[u];~i;i=edge[i].nt)
^
0_0_29392685_31400.cpp:75:9: error: 'maxlen' was not declared in this scope
maxlen=max(maxlen,tmp+d);
^
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