mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-11-30 18:36:27 +00:00
100 lines
2.1 KiB
C++
100 lines
2.1 KiB
C++
#include <bits/stdc++.h>
|
|
|
|
using std::cin;
|
|
using std::cout;
|
|
using std::endl;
|
|
|
|
int n, m, op, l, r, x, a[100005];
|
|
|
|
// Segment Tree
|
|
void pushup(int);
|
|
void build(int, int, int);
|
|
void modify(int, int, int, int);
|
|
void modify(int, int, int);
|
|
long long query(int, int, int);
|
|
|
|
signed main() {
|
|
std::ios::sync_with_stdio(false);
|
|
cin >> n >> m;
|
|
for (int i = 1; i <= n; i++) {
|
|
cin >> a[i];
|
|
}
|
|
build(1, 1, n);
|
|
while (m--) {
|
|
cin >> op >> l >> r;
|
|
if (op == 1) {
|
|
cout << query(1, l, r) << endl;
|
|
} else if (op == 2) {
|
|
cin >> x;
|
|
modify(1, l, r, x);
|
|
} else {
|
|
modify(1, l, r);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// === Segment Tree ===
|
|
|
|
struct node {
|
|
int l, r;
|
|
long long s, m;
|
|
|
|
node()
|
|
: l(0), r(0), s(0), m(0) {}
|
|
node(int _l, int _r)
|
|
: l(_l), r(_r), s(0), m(0) {}
|
|
} tr[100005 << 2];
|
|
|
|
inline void pushup(int u) {
|
|
tr[u].s = tr[u << 1].s + tr[u << 1 | 1].s;
|
|
tr[u].m = std::max(tr[u << 1].m, tr[u << 1 | 1].m);
|
|
}
|
|
|
|
void build(int u, int l, int r) {
|
|
tr[u] = node(l, r);
|
|
if (l == r) {
|
|
tr[u].s = tr[u].m = a[l];
|
|
return;
|
|
}
|
|
int mid = l + r >> 1;
|
|
build(u << 1, l, mid);
|
|
build(u << 1 | 1, mid + 1, r);
|
|
pushup(u);
|
|
}
|
|
|
|
void modify(int u, int x, int d) {
|
|
if (tr[u].l == x && tr[u].r == x) {
|
|
tr[u].s = tr[u].m = d;
|
|
return;
|
|
}
|
|
int mid = tr[u].l + tr[u].r >> 1;
|
|
if (x <= mid) {
|
|
modify(u << 1, x, d);
|
|
} else {
|
|
modify(u << 1 | 1, x, d);
|
|
}
|
|
pushup(u);
|
|
}
|
|
|
|
void modify(int u, int l, int r, int d) {
|
|
if (tr[u].m < d) return;
|
|
if (tr[u].l == tr[u].r) {
|
|
tr[u].s = tr[u].m %= d;
|
|
return;
|
|
}
|
|
int mid = tr[u].l + tr[u].r >> 1;
|
|
if (l <= mid) modify(u << 1, l, r, d);
|
|
if (r > mid) modify(u << 1 | 1, l, r, d);
|
|
pushup(u);
|
|
}
|
|
|
|
long long query(int u, int l, int r) {
|
|
if (l <= tr[u].l && tr[u].r <= r) return tr[u].s;
|
|
int mid = tr[u].l + tr[u].r >> 1;
|
|
long long sum = 0;
|
|
if (l <= mid) sum += query(u << 1, l, r);
|
|
if (r > mid) sum += query(u << 1 | 1, l, r);
|
|
return sum;
|
|
}
|