0_0_37283169_14074.cpp: In function 'int main()':
0_0_37283169_14074.cpp:13:36: error: 'scanf' was not declared in this scope
while(scanf("%d %d %d",&a,&b,&n))
^
0_0_37283169_14074.cpp:17:29: error: 'printf' was not declared in this scope
printf("%d\n",f(a,b,n));
^
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