0_0_20751282_16477.cpp: In function 'void Solve()': 0_0_20751282_16477.cpp:43:11: error: too few arguments to function 'LL quick(LL, LL, LL)' quick(); ^ 0_0_20751282_16477.cpp:21:4: note: declared here LL quick(LL a,LL b,LL n) ^