Compilare: main.cpp: In function 'void initpoz()': main.cpp:17:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz[j]<vpoz[b[j]].size() && vpoz[b[j]][poz[j]]<vpoz[b[j-1]][poz[j-1]]) ~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:38:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vpoz[b[1]].size();i++){ ~^~~~~~~~~~~~~~~~~~ main.cpp:43:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz[j]<vpoz[b[j]].size() && vpoz[b[j]][poz[j]]<vpoz[b[j-1]][poz[j-1]]) ~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz[j]==vpoz[b[j]].size()){ ~~~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:29:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ main.cpp:31:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^ main.cpp:35:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&b[i]); ^