Accepted
foo.cc: In function 'int main()':
foo.cc:87:7: warning: unused variable 'j' [-Wunused-variable]
87 | int i,j,a,b;char cc;
| ^
正在同步测试数据，请稍后 [Hydro](https://hydro.ac)提供评测服务
foo.cc: In function 'int main()':
foo.cc:87:7: warning: unused variable 'j' [-Wunused-variable]
87 | int i,j,a,b;char cc;
| ^
正在同步测试数据，请稍后 [Hydro](https://hydro.ac)提供评测服务
