Compilare: main.cpp: In function 'int main()': main.cpp:35:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i1 = 0; i1 < v.size() && ok == 1; i1++ ){ ~~~^~~~~~~~~~ main.cpp:36:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i2 = 0; i2 < v.size() && ok == 1; i2++ ){ ~~~^~~~~~~~~~ main.cpp:37:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i3 = 0; i3 < v.size() && ok ==1; i3++ ){ ~~~^~~~~~~~~~ main.cpp:38:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i4 = 0; i4 < v.size() && ok == 1; i4++ ){ ~~~^~~~~~~~~~ main.cpp:39:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i5 = 0; i5 < v.size() && ok == 1; i5++ ){ ~~~^~~~~~~~~~ main.cpp:40:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i6 = 0; i6 < v.size() && ok == 1; i6++ ){ ~~~^~~~~~~~~~ main.cpp:23:9: warning: unused variable 'contor' [-Wunused-variable] int contor = 0; ^~~~~~