0_0_28478752_28596.cpp: In function 'int main()':
0_0_28478752_28596.cpp:16:32: error: 'a' was not declared in this scope
scanf("%lld%lld%lld", &a, &b, &k);
^
0_0_28478752_28596.cpp:16:36: error: 'b' was not declared in this scope
scanf("%lld%lld%lld", &a, &b, &k);
^
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