0_0_26136963_31288.cpp: In function 'void FFT(Complex*, int, int)':
0_0_26136963_31288.cpp:25:18: error: 'n' was not declared in this scope
for (int i=1;i<n;i++) {
^
0_0_26136963_31288.cpp:27:15: error: 'j' was not declared in this scope
if (i<j) swap(a[i],a[j]);
^
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