View Compilation Error

0_0_37977440_30071.cpp: In function 'void Min25::init()':
0_0_37977440_30071.cpp:35:93: error: 'mod' was not declared in this scope
                 g[j] = (g[j] - (long long) prime[i] * (g[ID(a[j] / prime[i])] - sum[i - 1])%mod)%mod;
                                                                                             ^