Compilare: main.cpp: In function 'int main()': main.cpp:49:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( start >= Cc.size() - 1 ) { ~~~~~~^~~~~~~~~~~~~~~~ main.cpp:56:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( i = start; i < Cc.size(); ++i ) { ~~^~~~~~~~~~~ main.cpp:64:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = i; j < Cc.size() - 1; ++j ) ~~^~~~~~~~~~~~~~~ main.cpp:69:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( start == Cc.size() - 2 && i == Cc.size() ) { ~~~~~~^~~~~~~~~~~~~~~~ main.cpp:69:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( start == Cc.size() - 2 && i == Cc.size() ) { ~~^~~~~~~~~~~~ main.cpp:75:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = i; j < Cc.size(); ) ~~^~~~~~~~~~~ main.cpp:90:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( start + solved == i - 1 && i == Cc.size() - 1 ) { ~~^~~~~~~~~~~~~~~~ main.cpp:97:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = start + solved; j < Cc.size() - 1; ++j ) ~~^~~~~~~~~~~~~~~