0_0_16332810_19377.cpp: In function 'void dfs(int)':
0_0_16332810_19377.cpp:32:4: error: 'cot' was not declared in this scope
cot++;
^
0_0_16332810_19377.cpp:40:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
return cot;
^
0_0_16332810_19377.cpp: In function 'int main()':
0_0_16332810_19377.cpp:62:13: error: 'cot' was not declared in this scope
cot = 0;
^
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