Compilare: main.cpp: In function 'int main()': main.cpp:86:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( i == poz && poz != ans.size() - 1 ) ~~^~~~~~ main.cpp:86:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ( i == poz && poz != ans.size() - 1 ) ~~~~^~~~~~~~~~~~~~~~~