0_0_38662282_22701.cpp: In function 'void solve()': 0_0_38662282_22701.cpp:66:61: error: 'Mod' was not declared in this scope; did you mean 'mod'? 66 | a[i] = (31ll * a[i] + s[I + j] - 'a' + 1) % Mod; | ^~~ | mod