#define print(x) int main(){write("Hello world!\n");}// +++++++++++[>+++++++>++++++++++>++++>+>+++<<<<<-]>---.++++++.>>+++++.++++++.+++.--.---.>>++.<<<<+++++++++.>+++++++++++.------------.++++++++.++++++++.>>>+.
print( "CI-3641 Rocks!" ) ;
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