Compilare: user.cpp: In function ‘int main()’: user.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<d[i].size()-1;++j) ^ user.cpp:67:30: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(poz==poz2 && poz==-1 || (poz2==-1)) ^ user.cpp:56:13: warning: unused variable ‘pp’ [-Wunused-variable] int pp=px[i]; ^ user.cpp: In function ‘int cb(int, int)’: user.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type] } ^