/in/foo.cc: In function 'int main()':
/in/foo.cc:9:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 for(i=1;i<=n;i++)
 ^~~
/in/foo.cc:13:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  cout<<f[t];
  ^~~~
/in/foo.cc:8:10: warning: 'n' is used uninitialized in this function [-Wuninitialized]
 for(i=1;i<=n;i++) cin>>v[i]>>c[i];
         ~^~~
/in/foo.cc:13:11: warning: 't' is used uninitialized in this function [-Wuninitialized]
  cout<<f[t];
           ^