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传送门
题目描述
分析
我们去维护每个区间内不能整除 x x x的个数 c n t cnt cnt
- x = = 0 x == 0 x==0
把这个区间内任意一个数修改为 x x x即可 - x = = 1 x == 1 x==1
将不能整除 x x x的数修改为 x x x - x > 1 x > 1 x>1
无法达到要求
代码
#pragma GCC optimize(3)
#include <bits/stdc++.h>
#define debug(x) cout<<#x<<":"<<x<<endl;
#define dl(x) printf("%lld\n",x);
#define di(x) printf("%d\n",x);
#define _CRT_SECURE_NO_WARNINGS
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> PII;
typedef vector<int> VI;
const int INF = 0x3f3f3f3f;
const int N = 1e6 + 10;
const ll mod = 1000000007;
const double eps = 1e-9;
const double PI = acos(-1);
template<typename T>inline void read(T &a) {char c = getchar(); T x = 0, f = 1; while (!isdigit(c)) {if (c == '-')f = -1; c = getchar();}while (isdigit(c)) {x = (x << 1) + (x << 3) + c - '0'; c = getchar();} a = f * x;
}
int gcd(int a, int b) {return (b > 0) ? gcd(b, a % b) : a;}
int a[N], n,cnt;
struct Node {int l, r, cnt;
}tr[N * 4];void push(int u) {tr[u].cnt = gcd(tr[u << 1].cnt, tr[u << 1 | 1].cnt);
}void build(int u, int l, int r) {tr[u].l = l,tr[u].r = r;if (l == r) {tr[u].cnt = a[l];return;}int mid = l + r >> 1;build(u << 1, l, mid), build(u << 1 | 1, mid + 1, r);push(u);
}void modify(int u,int p,int x){if(tr[u].l == tr[u].r){tr[u].cnt = x;return;}int mid = tr[u].l + tr[u].r >> 1;if(p <= mid) modify(u << 1,p,x);else modify(u << 1 | 1,p,x);push(u);
}void query(int u,int l,int r,int x){if(cnt > 1) return;if(tr[u].l == tr[u].r) {cnt++;return;}int res = 0;int mid = tr[u].l + tr[u].r >> 1;if(l <= mid && tr[u << 1].cnt % x) query(u << 1,l,r,x);if(r > mid && tr[u << 1 | 1].cnt % x) query(u << 1 | 1,l,r,x);return;
} int main() {read(n);for (int i = 1; i <= n; i++) read(a[i]);build(1, 1, n);int m;read(m);while(m--){int op,l,r,x;read(op);if(op == 1){read(l),read(r),read(x);cnt = 0;query(1,l,r,x);printf("%s\n",cnt <= 1 ? "YES" : "NO");}else {read(r),read(x);modify(1,r,x);}}return 0;
}/**
* ┏┓ ┏┓+ +
* ┏┛┻━━━┛┻┓ + +
* ┃ ┃
* ┃ ━ ┃ ++ + + +
* ████━████+
* ◥██◤ ◥██◤ +
* ┃ ┻ ┃
* ┃ ┃ + +
* ┗━┓ ┏━┛
* ┃ ┃ + + + +Code is far away from
* ┃ ┃ + bug with the animal protecting
* ┃ ┗━━━┓ 神兽保佑,代码无bug
* ┃ ┣┓
* ┃ ┏┛
* ┗┓┓┏━┳┓┏┛ + + + +
* ┃┫┫ ┃┫┫
* ┗┻┛ ┗┻┛+ + + +
*/
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