Compilare: main.cpp: In function 'int main()': main.cpp:89:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<diviz[v[i]].size();j++){ ~^~~~~~~~~~~~~~~~~~~ main.cpp:100:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<diviz[v[right-1]].size() && sol[i]=='0';j++){ /// stergi right ~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:107:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<diviz[v[right]].size() && sol[i]=='0';j++){ ~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:116:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (k=0;k<diviz[v[right2]].size();k++){ ~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:22:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^