foo.c: In function 'main':
foo.c:8:34: error: expected ';' before '\U0000ff01\U0000ff1b'
    8 |         t=n+a+b+((a+b)/3+(a+b)/4)！；
      |                                  ^~~~
      |                                  ;
foo.c:5:19: warning: variable 't' set but not used [-Wunused-but-set-variable]
    5 |         int n,a,b,t;
      |                   ^

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