记录详情

foo.cc: In function 'int main()':
foo.cc:7:11: warning: unused variable 'b' [-Wunused-variable]
     int a,b=0;
           ^

[Hydro](https://hydro.ac)提供评测服务

#	状态	耗时	内存占用
#1	Wrong Answer Read 0, expect 4.	1ms	408.0 KiB
#2	Wrong Answer Read 0, expect 7.	1ms	384.0 KiB

Wrong Answer