#include<bits/stdc++.h> using namespace std; int N=3e8; uint64_t s = N, t = 0; uint64_t next() { s ^= (s << 13); s ^= (s >> 7); s ^= (s << 17); return s; } int main(){ for (int i = 0; i < N; ++i) { s = next(); t += s % N; } cout << t << endl; }