0_0_12652367_19966.cpp: In function `int main()':
0_0_12652367_19966.cpp:14: error: `iota' undeclared (first use this function)
0_0_12652367_19966.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_12652367_19966.cpp:20: error: no match for 'operator<<' in 'std::cin << n'
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