450400_0_0_28751.cpp: In function `int main()':
450400_0_0_28751.cpp:4: error: `o' undeclared (first use this function)
450400_0_0_28751.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
450400_0_0_28751.cpp:5: error: `n' undeclared (first use this function)
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