Compilare: user.cpp: In function ‘void calc_pct_intersectie()’: user.cpp:67:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<id_y.size(); ++i) ^ user.cpp:68:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j<id_x.size(); ++j){ ^ user.cpp: In function ‘int verific1()’: user.cpp:80:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i1 = 0; i1<id_y.size()-1; ++i1){ ^ user.cpp:81:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i2 = i1+1; i2<id_y.size(); ++i2){ ^ user.cpp:85:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j<id_x.size(); ++j){ ^ user.cpp: In function ‘int verific2()’: user.cpp:117:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j1 = 0; j1<id_x.size()-1; ++j1){ ^ user.cpp:118:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j2 = j1+1; j2<id_x.size(); ++j2){ ^ user.cpp:122:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i<id_y.size(); ++i){ ^ user.cpp: In function ‘int dist(int, std::pair<int, int>)’: user.cpp:63:1: warning: control reaches end of non-void function [-Wreturn-type] } ^