View Compilation Error

0_0_31574796_14531.cpp: In function 'long long int solve(int)':
0_0_31574796_14531.cpp:87:19: error: expected primary-expression before '%' token
   F = F + Function%
                   ^
0_0_31574796_14531.cpp:87:19: error: expected primary-expression at end of input
0_0_31574796_14531.cpp:87:19: error: expected '}' at end of input
0_0_31574796_14531.cpp:87:19: error: expected '}' at end of input