Compilare: main.cpp: In function 'bool operator<(const string&, const string&)': main.cpp:17:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if( A < B || A == B && A.size() < B.size() ) return 1; ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Path(int&, int)': main.cpp:75:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if( viz[parent] == 0 && D[i] == ')' )i++; viz[parent] = 1; ^~ main.cpp:75:47: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if( viz[parent] == 0 && D[i] == ')' )i++; viz[parent] = 1; ^~~ main.cpp: In function 'void Paths(int)': main.cpp:91:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < Ad[nod].size(); ++j ) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void Solve()': main.cpp:128:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[0].size(); ++i ) ~~^~~~~~~~~~~~~~