Compilare: user.cpp: In function ‘int bfs()’: user.cpp:30:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[l].size();i++) { ^ user.cpp: In function ‘int main()’: user.cpp:49:33: warning: format ‘%s’ expects argument of type ‘char*’, but argument 4 has type ‘char (*)[1000005]’ [-Wformat=] scanf("%d %d\n%s\n",&n,&m,&s); ^ user.cpp:102:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d ",sol[a][b][sol[a][b].size()-1]); ^ user.cpp:102:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d ",sol[a][b][sol[a][b].size()-1]); ^ user.cpp:102:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d ",sol[a][b][sol[a][b].size()-1]); ^ user.cpp:102:44: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d ",sol[a][b][sol[a][b].size()-1]); ^ user.cpp:103:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[a][b].erase(sol[a][b].begin()+sol[a][b].size()-1); ^ user.cpp:103:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[a][b].erase(sol[a][b].begin()+sol[a][b].size()-1); ^ user.cpp:103:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[a][b].erase(sol[a][b].begin()+sol[a][b].size()-1); ^ user.cpp:103:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[a][b].erase(sol[a][b].begin()+sol[a][b].size()-1); ^ user.cpp:103:52: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[a][b].erase(sol[a][b].begin()+sol[a][b].size()-1); ^ user.cpp:103:55: warning: array subscript has type ‘char’ [-Wchar-subscripts] sol[a][b].erase(sol[a][b].begin()+sol[a][b].size()-1); ^ user.cpp:47:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("teroristi.in","r",stdin); ^ user.cpp:48:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("teroristi.out","w",stdout); ^ user.cpp:49:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n%s\n",&n,&m,&s); ^ user.cpp:53:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c %c\n",&a,&b); ^