@[miss_A](/user/747717) 错误有点多，先把修改过的代码给你，具体可以用代码对比器对比一下
```cpp
#include <iostream>
#include <cstdio>
#include <cctype>
#define ll unsigned long long
using namespace std;
const int N = 1e5 + 1;
ll n, m, tot, root;
ll d[2 * N], tag[2 * N], a[N];
ll ls[2 * N], rs[2 * N];
namespace rp {
ll read() {
ll x = 0, w = 1;
char ch = getchar();
while (!isdigit(ch)) {
if (ch == '-') w = -1;
ch = getchar();
}
while (isdigit(ch)) {
x = x * 10 + (ch - '0');
ch = getchar();
}
return x * w;
}
void print(ll x) {
if (x < 0) {
x = -x;
putchar('-');
}
if (x > 9) print(x / 10);
putchar(x % 10 + '0');
}
}
namespace segt {
void build(ll s, ll t, ll& p) {
if (!p) p = ++tot;
if (s == t) {
d[p] = a[s];
return;
}
ll m = s + ((t - s) >> 1);
build(s, m, ls[p]);
build(m + 1, t, rs[p]);
d[p] = d[ls[p]] + d[rs[p]];
}
void push_tag(ll& p, ll l, ll r, ll k) {
if (!p)p = ++tot;
d[p] += k * (r - l + 1);
tag[p] += k;
}
void pushdown(ll l1, ll rr, ll& p, ll l, ll r) {
if (l == r) return;
ll m = l + ((r - l) >> 1);
push_tag(ls[p], l, m, tag[p]);
push_tag(rs[p], m + 1, r, tag[p]);
tag[p] = 0;
}
void update(ll l, ll r, ll k, ll s, ll t, ll& p) {
if (!p) return;
if (l > t || r < s) return;
if (l <= s && r >= t) {
push_tag(p, s, t, k);
return;
}
ll m = (s + ((t - s) >> 1));
if (tag[p]) pushdown(l, r, p, s, t);
if (l <= m) update(l, r, k, s, m, ls[p]);
if (r > m) update(l, r, k, m + 1, t, rs[p]);
d[p] = d[ls[p]] + d[rs[p]];
}
ll getsum(ll l, ll r, ll s, ll t, ll& p) {
if (l > t || r < s) return 0;
if (l <= s && r >= t) return d[p];
ll m = s + ((t - s) >> 1);
if (tag[p]) pushdown(l, r, p, s, t);
ll sum = 0;
if (l <= m) sum += getsum(l, r, s, m, ls[p]);
if (r > m) sum += getsum(l, r, m + 1, t, rs[p]);
return sum;
}
}
int main() {
//freopen("code.in", "r", stdin);
//freopen("code.out", "w", stdout);
ios::sync_with_stdio(false);
n = rp::read(), m = rp::read();
for (int i = 1; i <= n; i++) {
ll num = rp::read();
a[i] = num;
}
segt::build(1ll, n, root);
for (int i = 1; i <= m; i++) {
ll num = rp::read(), x = rp::read(), y = rp::read();
if (num == 1) {
ll k = rp::read();
segt::update(x, y, k, 1ll, n, root);
}
else {
ll ans = segt::getsum(x, y, 1ll, n, root);
rp::print(ans);
putchar('\n');
}
}
return 0;
}
```
by Dws_t7760 @ 2023-12-17 12:50:38
@[t7760](/user/776962) orz orz解决了，感谢大佬
by miss_A @ 2023-12-17 20:00:24