#include <iostream>
#include <cstring>
using namespace std;
#define ac cin.tie(0), cin.sync_with_stdio(0);
#define endl "\n"
typedef long long LL;
const int N = 1e5 + 10;
struct Node {
int l, r;
LL res;
} tr[4 * N];
int MOD;
void pushup(Node &u, Node &l, Node &r) {
u.res = l.res * r.res % MOD;
}
void build(int u, int l, int r) {
if (l == r) tr[u] = {l, l, 1};
else {
tr[u] = {l, r, 1};
int mid = l + r >> 1;
build(u << 1, l, mid);
build(u << 1 | 1, mid + 1, r);
pushup(tr[u], tr[u << 1], tr[u << 1 | 1]);
}
}
void modify(int u, int x, int y) {
if (tr[u].l == x && tr[u].r == x) tr[u] = {x, x, y};
else {
int mid = tr[u].l + tr[u].r >> 1;
if (x <= mid) modify(u << 1, x, y);
else modify(u << 1 | 1, x, y);
pushup(tr[u], tr[u << 1], tr[u << 1 | 1]);
}
}
Node query(int u, int l, int r) {
if (tr[u].l >= l && tr[u].r <= r) return tr[u];
else {
int mid = tr[u].l + tr[u].r >> 1;
if (l > mid) return query(u << 1 | 1, l, r);
else if (r <= mid) return query(u << 1, l, r);
else {
Node a = query(u << 1, l, r);
Node b = query(u << 1 | 1, l, r);
Node res;
pushup(res, a, b);
return res;
}
}
}
int main() {
ac
int n;
cin >> n;
while (n--) {
int m;
cin >> m >> MOD;
build(1, 1, m);
for (int i = 1; i <= m; i += 1) {
int a, b;
cin >> a >> b;
if (a == 1) {
modify(1, i, b);
cout << query(1, 1, i).res << endl;
} else {
modify(1, b, 1);
cout << query(1, 1, i).res << endl;
}
}
}
return 0;
}
为什么这样写不对,改成query(1,1,m)就对了呢,把范围缩小到i,也就是当前操作的位置,应该不影响query呀?