#include namespace { #pragma GCC diagnostic ignored "-Wunused-function" #include #pragma GCC diagnostic warning "-Wunused-function" using namespace std; using namespace atcoder; #define rep(i,n) for(int i = 0; i < (int)(n); i++) #define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--) #define all(x) begin(x), end(x) #define rall(x) rbegin(x), rend(x) template bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; } template bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; } using ll = long long; using P = pair; using VI = vector; using VVI = vector; using VL = vector; using VVL = vector; struct barrett { unsigned int _m; unsigned long long im; explicit barrett(unsigned int m) : _m(m), im(((unsigned __int128)1 << 64) / m) {} unsigned int umod() const { return _m; } // supposed to return a uint in [0, 2m) unsigned int mul(unsigned int a, unsigned int b) const { auto z = (unsigned long long)a * b; return z - (unsigned long long)((unsigned __int128)z * im >> 64) * _m; } }; } int main() { ios::sync_with_stdio(false); cin.tie(0); int q; cin >> q; struct S { unsigned int new_m, x; }; int ok_len = 0; vector st; rep(_, q) { int t; cin >> t; if (t == 1) { unsigned int m, r; cin >> m >> r; if (ok_len != ssize(st)) { st.emplace_back(0, 0); continue; } barrett bt(m); unsigned int c = 1, s = 0; for (auto [new_m, x] : st | views::reverse) { c = bt.mul(c, new_m); s = bt.mul(s, new_m) + x; } r = (r + m - s % m) % m; auto [g, ic] = internal::inv_gcd(c, m); if (r % g) { st.emplace_back(0, 0); continue; } r /= g; m /= g; ok_len++; st.emplace_back(m, r * ic % m); } else if (t == 2) { int k; cin >> k; rep(_, k) st.pop_back(); chmin(ok_len, int(st.size())); } else { unsigned int m; cin >> m; if (ok_len != ssize(st)) { cout << -1 << '\n'; continue; } barrett bt(m); unsigned int s = 0; for (auto [new_m, x] : st | views::reverse) { s = bt.mul(s, new_m) + x; } s %= m; cout << s << '\n'; } } }