Compilare: main.cpp: In function 'void rezolva()': main.cpp:59:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < b.size() ; i++ ) ~~^~~~~~~~~~ main.cpp:62:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0 ; j < a.size() ; j++ ) ~~^~~~~~~~~~ main.cpp:66:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < b.size() ; i++ ) ~~^~~~~~~~~~ main.cpp:71:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0 ; j < b.size() ; j++ ) ~~^~~~~~~~~~ main.cpp:81:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0 ; j < b.size() ; j++ ) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:89:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("retea2.out","w", stdout ); ^