28431_0_12305.cpp:3: error: `main' must return `int'
28431_0_12305.cpp: In function `int main(...)':
28431_0_12305.cpp:4: error: `scaf' undeclared (first use this function)
28431_0_12305.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
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