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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#653864 | #6435. Paimon Segment Tree | lllei# | WA | 8ms | 30284kb | C++20 | 4.0kb | 2024-10-18 20:46:23 | 2024-10-18 20:46:24 |
Judging History
answer
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,tune=native,popcnt,lzcnt,abm,bmi,bmi2,fma")
using namespace std;
const int mod = 1e9 + 7;
const int N = 5e4 + 5;
int n, m, q;
int a[N];
struct Matrix
{
int mt[4][4];
Matrix():mt{}{}
Matrix(int b)
{
memset(mt, 0, sizeof(mt));
mt[0][0] = 1;
mt[0][1] = b, mt[1][1] = 1;
mt[0][2] = b * 1ll * b % mod, mt[1][2] = 2 * 1ll * b % mod, mt[2][2] = 1;
mt[0][3] = mt[0][2], mt[1][3] = mt[1][2], mt[2][3] = mt[3][3] = 1;
}
} E;
int md(int x){return x>=mod?x-mod:x;}
Matrix operator*(const Matrix &a, const Matrix &b)
{
Matrix c;
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
{
for (int k = 0; k < 4; k++)
c.mt[i][j] = md(a.mt[i][k] * 1LL * b.mt[k][j] % mod + c.mt[i][j]);
}
return c;
}
Matrix operator+(const Matrix &a, const Matrix &b)
{
Matrix c;
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
{
c.mt[i][j] = md(a.mt[i][j] + b.mt[i][j]);
}
return c;
}
Matrix tag[N << 2];
Matrix sum[N << 2];
int vis[N << 2];
void pushdown(int rt)
{
if (vis[rt])
{
sum[rt << 1] = sum[rt << 1] * tag[rt];
sum[rt << 1 | 1] = sum[rt << 1 | 1] * tag[rt];
tag[rt << 1] = tag[rt << 1] * tag[rt];
tag[rt << 1 | 1] = tag[rt << 1 | 1] * tag[rt];
vis[rt << 1] = 1;
vis[rt << 1 | 1] = 1;
tag[rt] = E;
vis[rt] = 0;
}
}
void update(int L, int R, int l, int r, int rt, int b)
{
if (L <= l && r <= R)
{
Matrix tmp = Matrix(b);
tag[rt] = tag[rt] * tmp;
sum[rt] = sum[rt] * tmp;
vis[rt] = 1;
return;
}
pushdown(rt);
int mid = l + r >> 1;
if (L <= mid)
update(L, R, l, mid, rt << 1, b);
if (R > mid)
update(L, R, mid + 1, r, rt << 1 | 1, b);
sum[rt] = sum[rt << 1] + sum[rt << 1 | 1];
}
int query(int L, int R, int l, int r, int rt)
{
if (L <= l && r <= R)
return sum[rt].mt[0][3];
pushdown(rt);
int mid = l + r >> 1, ans = 0;
if (L <= mid)
ans = (ans + query(L, R, l, mid, rt << 1)) % mod;
if (R > mid)
ans = (ans + query(L, R, mid + 1, r, rt << 1 | 1)) % mod;
return ans;
}
void build(int l, int r, int rt)
{
tag[rt] = E;
if (l == r)
{
sum[rt] = E;
return;
}
int mid = l + r >> 1;
build(l, mid, rt << 1);
build(mid + 1, r, rt << 1 | 1);
sum[rt] = sum[rt << 1] + sum[rt << 1 | 1];
}
int L[N], R[N], W[N];
int ans[N];
vector<pair<pair<int, int>, pair<int, int>>> qr[N];
int main()
{
cin.tie(0);
ios::sync_with_stdio(0);
cin >> n >> m >> q;
for (int i = 0; i < 4; i++)
E.mt[i][i] = 1;
build(1, n, 1);
for (int i = 1; i <= n; i++)
{
int x;
cin >> x;
update(i, i, 1, n, 1, x);
}
for (int i = 1; i <= m; i++)
cin >> L[i] >> R[i] >> W[i];
for (int i = 1; i <= q; i++)
{
int l, r, x, y;
cin >> l >> r >> x >> y;
if (x >= 1)
qr[x - 1].push_back({{l, r}, {i, -1}});
qr[y].push_back({{l, r}, {i, 1}});
}
for (int i = 0; i <= m; i++)
{
if (i)
{
if (L[i] - 1 >= 1)
update(1, L[i] - 1, 1, n, 1, 0);
update(L[i], R[i], 1, n, 1, W[i]);
if (R[i] + 1 <= n)
update(R[i] + 1, n, 1, n, 1, 0);
}
for (auto t : qr[i])
{
int l = t.first.first;
int r = t.first.second;
// cout << query(l, r, 1, n, 1) << ' ' << i << '%' << '\n';
ans[t.second.first] += query(l, r, 1, n, 1) * t.second.second;
ans[t.second.first] %= mod;
}
}
for (int i = 1; i <= q; i++)
cout << (ans[i] % mod + mod) % mod << '\n';
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 29624kb
input:
3 1 1 8 1 6 2 3 2 2 2 0 0
output:
1
result:
ok 1 number(s): "1"
Test #2:
score: 0
Accepted
time: 8ms
memory: 30284kb
input:
4 3 3 2 3 2 2 1 1 6 1 3 3 1 3 6 2 2 2 3 1 4 1 3 4 4 2 3
output:
180 825 8
result:
ok 3 number(s): "180 825 8"
Test #3:
score: -100
Wrong Answer
time: 0ms
memory: 29552kb
input:
100 107 180 -280960553 266308104 -997644864 856103777 592874377 674379235 -946339772 641750362 642418716 -360811715 -555543246 206614021 358239245 349842656 983198973 807518446 -66612455 -980932737 109826132 -109676067 51226145 452115561 -42729559 -950621304 -87009773 714026474 375317493 693260053 -...
output:
987351470 480617351 543371150 947145241 832295978 367030471 85911722 283066901 741707994 461388626 247029353 943672954 868972316 826774785 106450500 845850213 131983431 241316769 843252370 230593516 742051118 606551808 304153107 380683218 248765302 364906843 179755969 464984301 553101444 600397251 9...
result:
wrong answer 1st numbers differ - expected: '400489222', found: '987351470'