// Judges with GCC >= 12 only needs Ofast
// #pragma GCC optimize("O3,no-stack-protector,fast-math,unroll-loops,tree-vectorize")
// MLE optimization
// #pragma GCC optimize("conserve-stack")
// Old judges
// #pragma GCC target("sse4.2,popcnt,lzcnt,abm,mmx,fma,bmi,bmi2")
// New judges. Test with assert(__builtin_cpu_supports("avx2"));
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
// Atcoder
// #pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma")
/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
- insert(x),
- find_by_order(k): return iterator to the k-th smallest element
- order_of_key(x): the number of elements that are strictly smaller
*/
#include <bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_real_distribution<> pp(0.0, 1.0);
// #define int long long
#define ld long double
#define pii pair<int, int>
#define piii pair<pii, int>
#define mpp make_pair
#define fi first
#define se second
const int inf = 1e9;
const int mod = 1e9 + 7;
const int maxn = 100005;
const int bl = 650;
const int maxs = 655;
const int maxm = 200005;
const int maxq = 500005;
const int maxl = 35;
const int maxa = 250000;
const int root = 3;
/*
int power(int a,int n){
int res=1;
while(n){
if(n&1) res=res*a%mod;
a=a*a%mod;n>>=1;
}
return res;
}
const int iroot=power(3,mod-2);
*/
const int base = 101;
int n, f[maxn];
struct node
{
int pl[maxl], pr[maxl], cl[maxl], cr[maxl], sl[maxl], sr[maxl];
int szl, szr, sum, cnt;
node() {}
void reset(int x)
{
szl = szr = 1;
pl[0] = pr[0] = x;
sl[0] = sr[0] = cl[0] = cr[0] = 0;
sum = f[x];
cnt = 1;
}
void print(int l, int r)
{
cout << '*' << l << ' ' << r << '\n';
cout << sum << ' ' << cnt << '\n';
cout << "#rr\n";
for (int i = 0; i < szr; i++)
cout << pr[i] << ' ' << cr[i] << ' ' << sr[i] << '\n';
cout << "#ll\n";
for (int i = 0; i < szl; i++)
cout << pl[i] << ' ' << cl[i] << ' ' << sl[i] << '\n';
}
};
namespace Segtree
{
node tree[4 * maxn];
node s[2];
int st = -1;
int add(int a, int b)
{
return min(a + b, inf);
}
void merge(node &res, node &a, node &b)
{
res.szl = a.szl;
res.szr = b.szr;
res.sum = a.sum + b.sum;
res.cnt = 0;
for (int i = 0; i < res.szl; i++)
res.pl[i] = a.pl[i], res.cl[i] = a.cl[i], res.sl[i] = a.sl[i];
for (int i = 0; i < res.szr; i++)
res.pr[i] = b.pr[i], res.cr[i] = b.cr[i], res.sr[i] = b.sr[i];
int len = 0, ok = 0;
if (a.sum > b.sum)
{
int cur = b.sum;
len = res.szr;
ok = 0;
for (int i = 0; i < a.szr; i++)
{
if (cur + a.sr[i] < f[a.pr[i]])
{
res.pr[res.szr] = a.pr[i];
res.sr[res.szr] = add(cur, a.sr[i]);
res.cr[res.szr++] = 0;
}
}
}
else
{
int cur = a.sum;
len = res.szl;
ok = 1;
for (int i = 0; i < b.szl; i++)
{
if (cur + b.sl[i] < f[b.pl[i]])
{
res.pl[res.szl] = b.pl[i];
res.sl[res.szl] = add(cur, b.sl[i]);
res.cl[res.szl++] = 0;
}
}
}
b.sl[b.szl] = b.sum;
b.cl[b.szl] = b.cnt;
a.sr[a.szr] = a.sum;
a.cr[a.szr] = a.cnt;
int ca = 0, cb = 0, cc = len;
auto fix = [&](int val)
{
while (true)
{
if (ca < a.szr && a.sr[ca] + b.sl[cb] >= f[a.pr[ca]])
ca++;
else if (cb < b.szl && a.sr[ca] + b.sl[cb] >= f[b.pl[cb]])
cb++;
else
break;
}
if (ok && ca == a.szr)
{
while (cc < res.szl && (cb == b.szl || res.pl[cc] < b.pl[cb]))
cc++;
if (cc < res.szl)
res.cl[cc] += val;
else
res.cnt += val;
}
if (!ok && cb == b.szl)
{
while (cc < res.szr && (ca == a.szr || res.pr[cc] > a.pr[ca]))
cc++;
if (cc < res.szr)
res.cr[cc] += val;
else
res.cnt += val;
}
};
for (int i = 1; i <= a.szr; i++)
{
ca = max(ca, i);
fix(a.cr[i]);
}
ca = cb = 0;
cc = len;
for (int i = 1; i <= b.szl; i++)
{
cb = max(cb, i);
fix(b.cl[i]);
}
}
void query(int l, int r, int id, int tl, int tr)
{
if (r < tl || tr < l)
return;
if (tl <= l && r <= tr)
{
if (st == -1)
s[0] = tree[id], st = 0;
else
st ^= 1, merge(s[st], s[st ^ 1], tree[id]);
return;
}
int mid = (l + r) >> 1;
query(l, mid, id << 1, tl, tr);
query(mid + 1, r, id << 1 | 1, tl, tr);
merge(tree[id], tree[id << 1], tree[id << 1 | 1]);
}
int query(int l, int r)
{
st = -1;
query(1, n, 1, l, r);
return s[st].cnt;
}
void update(int l, int r, int id, int pos)
{
if (l == r)
{
tree[id].reset(l);
return;
}
int mid = (l + r) >> 1;
if (pos <= mid)
update(l, mid, id << 1, pos);
else
update(mid + 1, r, id << 1 | 1, pos);
merge(tree[id], tree[id << 1], tree[id << 1 | 1]);
}
void build(int l, int r, int id)
{
if (l == r)
{
tree[id].reset(l);
return;
}
int mid = (l + r) >> 1;
build(l, mid, id << 1);
build(mid + 1, r, id << 1 | 1);
merge(tree[id], tree[id << 1], tree[id << 1 | 1]);
// tree[id].print(l,r);
}
}
void solve()
{
cin >> n;
for (int i = 1; i <= n; i++)
cin >> f[i];
Segtree::build(1, n, 1);
int q;
cin >> q;
for (int i = 1; i <= q; i++)
{
int t, x, y;
cin >> t >> x >> y;
if (t == 1)
f[x] = y, Segtree::update(1, n, 1, x);
else
cout << Segtree::query(x, y) << '\n';
}
}
signed main()
{
// freopen("input.txt","r",stdin);
// freopen("out.txt","w",stdout);
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int test = 1; // cin >> test;
while (test--)
solve();
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
344 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Runtime error |
9 ms |
4952 KB |
Execution killed with signal 11 |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Runtime error |
31 ms |
42840 KB |
Execution killed with signal 11 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
344 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Runtime error |
9 ms |
4952 KB |
Execution killed with signal 11 |
| 6 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Runtime error |
31 ms |
42840 KB |
Execution killed with signal 11 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
344 KB |
Output is correct |
| 2 |
Runtime error |
31 ms |
42840 KB |
Execution killed with signal 11 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
344 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Runtime error |
9 ms |
4952 KB |
Execution killed with signal 11 |
| 6 |
Halted |
0 ms |
0 KB |
- |
