Compilare: user.cpp: In function ‘int bellmanford(int)’: user.cpp:27:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[a].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:59:25: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 2 has type ‘int*’ [-Wformat=] scanf("%ld%ld",&n,&m); ^ user.cpp:59:25: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 3 has type ‘int*’ [-Wformat=] user.cpp:62:35: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 2 has type ‘int*’ [-Wformat=] scanf("%ld%ld%ld",&x,&y,&z); ^ user.cpp:62:35: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 3 has type ‘int*’ [-Wformat=] user.cpp:62:35: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 4 has type ‘int*’ [-Wformat=] user.cpp:72:31: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 2 has type ‘int’ [-Wformat=] printf("%ld ",d[i]); ^ user.cpp: In function ‘int bellmanford(int)’: user.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type] } ^