View Compilation Error

0_0_1613679_25519.cpp:2: error: size of array `p' is too large
0_0_1613679_25519.cpp: In function `int main()':
0_0_1613679_25519.cpp:14: error: `p' undeclared (first use this function)
0_0_1613679_25519.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1613679_25519.cpp:26: error: expected `}' at end of input