Compilare: main.cpp: In function 'int cb(int, int)': main.cpp:11:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pas+p2<frv[x].size() && frv[x][pas+p2]<val) ~~~~~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:31:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(n<stv.size()){ ~^~~~~~~~~~~ main.cpp:26:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&q); ^ main.cpp:29:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&tip,&x); ^