Compilare: main.cpp: In function 'void Read()': main.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v2.size(); ++i ) ~~^~~~~~~~~~~ main.cpp:54:59: warning: array subscript has type 'char' [-Wchar-subscripts] if( i == 0 || v2[i].c != v2[i - 1].c ) mzg[ v2[i].c ] = ++idx; ^ main.cpp:56:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v1.size(); ++i ) { ~~^~~~~~~~~~~ main.cpp:58:32: warning: array subscript has type 'char' [-Wchar-subscripts] int a = mzg[ v1[i].first]; ^ main.cpp:59:32: warning: array subscript has type 'char' [-Wchar-subscripts] int b = mzg[v1[i].second]; ^ main.cpp: In function 'void Dfs(int)': main.cpp:68:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int Dfs2(int)': main.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void Remake(int, int, int)': main.cpp:96:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void Do()': main.cpp:118:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < Ad[nod].size(); ++i ) { ~~^~~~~~~~~~~~~~~~ main.cpp:143:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1; i < _sol.size(); ++i ) ~~^~~~~~~~~~~~~ main.cpp:133:9: warning: unused variable 'curr' [-Wunused-variable] int curr = 0; ^~~~