foo.c:3:1: warning: return type defaults to 'int' [-Wimplicit-int]
 main()
 ^~~~
foo.c: In function 'main':
foo.c:16:2: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  if(j=0)
  ^~
foo.c:36:2: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
  system("pause");
  ^~~~~~
foo.c:6:20: warning: unused variable 'm' [-Wunused-variable]
  int i,j=0,t=0,n=0,m=0;
                    ^

自豪地采用[jd5](https://github.com/masnn/jd5)进行评测