Compilare: main.cpp: In function 'int main()': main.cpp:59:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(it<v.size()&&!w.empty()) ~~^~~~~~~~~ main.cpp:17:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&n,&m); ^ main.cpp:22:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&mat[i][j]); ^