Compilare: main.cpp: In function 'void Do()': main.cpp:59:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for( int i = 1; i <= last; ++i ) ^~~ main.cpp:79:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' sort( sol.begin(), sol.end(), comp ); ^~~~ main.cpp:81:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < sol.size(); ++i ) ~~^~~~~~~~~~~~ main.cpp:57:7: warning: unused variable 'l' [-Wunused-variable] int l, c; ^ main.cpp:57:10: warning: unused variable 'c' [-Wunused-variable] int l, c; ^