foo.cc: In function 'int main()':
foo.cc:34:23: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   34 |                 cin>>a+1;
      |                      ~^~
foo.cc:31:31: warning: unused variable 'f2' [-Wunused-variable]
   31 |                 bool f1=false,f2=false;
      |                               ^~
foo.cc:88:17: warning: 'last2' may be used uninitialized in this function [-Wmaybe-uninitialized]
   88 |                 if(last1>last2)
      |                 ^~
foo.cc:88:17: warning: 'last1' may be used uninitialized in this function [-Wmaybe-uninitialized]

正在同步测试数据，请稍后
Found 10 testcases.
[Hydro](https://hydro.ac)提供评测服务