/in/foo.cc: In function 'int main()':
/in/foo.cc:32:22: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  scanf("%d%lld",&n,&t);//硬币半数，操作数
                      ^
/in/foo.cc:35:19: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("%d",&a[i]);
                   ^