View Compilation Error

0_0_4453370_8956.cpp:5: error: size of array `a' is too large
0_0_4453370_8956.cpp: In function `long long int solve(long long int, int, int)':
0_0_4453370_8956.cpp:23: error: `a' undeclared (first use this function)
0_0_4453370_8956.cpp:23: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4453370_8956.cpp: In function `int main()':
0_0_4453370_8956.cpp:45: error: `a' undeclared (first use this function)