/in/foo.cc: In function 'int main()':
/in/foo.cc:22:25: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'int' [-Wformat=]
   scanf("%d%d%d",&v,&p,s);
                         ^
/in/foo.cc:22:26: warning: 's' may be used uninitialized in this function [-Wmaybe-uninitialized]
   scanf("%d%d%d",&v,&p,s);
                          ^