Compilare: user.cpp: In function ‘void minim(int)’: user.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < M[v].size(); i ++) c[ p[M[v][i]] ] = true; ^ user.cpp: In function ‘void bkt(int)’: user.cpp:35:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < M[v].size(); i ++) c[ p[M[v][i]] ] = true; ^ user.cpp:40:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < M[v].size() && ok; i ++) { ^ user.cpp: In function ‘void grupe(int)’: user.cpp:54:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < M[v].size(); i ++) { ^