QOJ.ac
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 |
---|---|---|---|---|---|---|---|---|---|
#725809 | #6435. Paimon Segment Tree | masttf | WA | 3ms | 3716kb | C++20 | 9.7kb | 2024-11-08 20:07:45 | 2024-11-08 20:07:46 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
using namespace std;
#define dbg(x...) \
do { \
cout << #x << " -> "; \
err(x); \
} while (0)
void err() {
cout << endl << endl;
}
template<class T, class... Ts>
void err(T arg, Ts ... args) {
cout << fixed << setprecision(10) << arg << ' ';
err(args...);
}
template<const int T>
struct ModInt {
const static int mod = T;
int x;
ModInt(int x = 0) : x(x % mod) {}
// ModInt(long long x) : x(int(x % mod)) {}
int val() { return x; }
ModInt operator + (const ModInt &a) const {
int x0 = x + a.x;
return ModInt(x0 < mod ? x0 : x0 - mod);
}
ModInt operator - (const ModInt &a) const {
int x0 = x - a.x;
return ModInt(x0 < 0 ? x0 + mod : x0);
}
ModInt operator * (const ModInt &a) const {
return ModInt(1LL * x * a.x % mod);
}
ModInt operator / (const ModInt &a) const {
return *this * a.inv();
}
bool operator == (const ModInt &a) const {
return x == a.x;
}
bool operator != (const ModInt &a) const {
return x != a.x;
}
void operator += (const ModInt &a) {
x += a.x;
if (x >= mod) x -= mod;
}
void operator -= (const ModInt &a) {
x -= a.x;
if (x < 0) x += mod;
}
void operator *= (const ModInt &a) {
x = 1LL * x * a.x % mod;
}
void operator /= (const ModInt &a) {
*this = *this / a;
}
friend ModInt operator + (int y, const ModInt &a){
int x0 = y + a.x;
return ModInt(x0 < mod ? x0 : x0 - mod);
}
friend ModInt operator - (int y, const ModInt &a){
int x0 = y - a.x;
return ModInt(x0 < 0 ? x0 + mod : x0);
}
friend ModInt operator * (int y, const ModInt &a){
return ModInt(1LL * y * a.x % mod);
}
friend ModInt operator / (int y, const ModInt &a){
return ModInt(y) / a;
}
friend ostream &operator<<(ostream &os, const ModInt &a) {
return os << a.x;
}
friend istream &operator>>(istream &is, ModInt &t){
return is >> t.x;
}
ModInt pow(long long n) const {
ModInt res(1), mul(x);
while(n){
if (n & 1) res *= mul;
mul *= mul;
n >>= 1;
}
return res;
}
ModInt inv() const {
int a = x, b = mod, u = 1, v = 0;
while (b) {
int t = a / b;
a -= t * b; swap(a, b);
u -= t * v; swap(u, v);
}
if (u < 0) u += mod;
return u;
}
};
constexpr int mod = 1e9 + 7;
using mint = ModInt<mod>;
template <const int M, class T>
struct Matrix{
T m[M][M];
int row, col;
Matrix(){
row = 0;
col = 0;
}
Matrix(int n){ //单位矩阵
row = col = n;
for(int i = 0; i < n; i++){
for(int j = 0; j < n; j++){
if(i == j)m[i][j] = 1;
else m[i][j] = 0;
}
}
}
Matrix(int r, int c){
row = r;
col = c;
for(int i = 0; i < row; i++){
for(int j = 0; j < col; j++){
m[i][j] = 0;
}
}
}
Matrix(vector<vector<T>> a){
row = a.size();
col = a[0].size();
for(int i = 0; i < row; i++){
for(int j = 0; j < col; j++){
m[i][j] = a[i][j];
}
}
}
Matrix operator * (const Matrix &y) const {
Matrix res(row, y.col);
for(int i = 0; i < row; i++){
for(int j = 0; j < y.col; j++){
for(int k = 0; k < col; k++){
res.m[i][j] += m[i][k] * y.m[k][j];
}
}
}
return res;
}
Matrix operator + (const Matrix &y) const {
Matrix res(row, col);
for(int i = 0; i < row; i++){
for(int j = 0; j < y.col; j++){
res.m[i][j] = m[i][j] + y.m[i][j];
}
}
return res;
}
Matrix qmi (long long b){
Matrix res(row);
Matrix a = *this;
while(b){
if(b & 1) res = res * a;
b >>= 1;
a = a * a;
}
return res;
}
};
using matrix = Matrix<4, mint>;
template<class Info, class Tag>
struct LazySegmentTree{
int n;
vector<Info> info;
vector<Tag> tag;
LazySegmentTree() : n(0) {}
LazySegmentTree(int n_, Info v_ = Info()){
init(n_, v_);
}
template<class T>
LazySegmentTree(vector<T> init_){ //注意下标从1开始也就是[0] 是空
init(init_);
}
void init(int n_, Info v_ = Info()){
init(vector(n_ + 1, v_));
}
template<class T>
void init(vector<T> init_){
n = init_.size() - 1;
info.assign(n * 4, Info());
tag.assign(n * 4, Tag());
auto bulid = [&](auto self, int l, int r, int p) -> void{
if(l == r){
info[p] = init_[l];
return ;
}
int mid = (l + r) >> 1;
self(self, l, mid, p << 1);
self(self, mid + 1, r, p << 1 | 1);
up(p);
};
bulid(bulid, 1, n, 1);
}
void cg(int p, const Tag &v){
info[p].apply(v);
tag[p].apply(v);
}
void up (int p){
info[p] = info[p << 1] + info[p << 1 | 1];
}
void down (int p){
cg(p << 1, tag[p]);
cg(p << 1 | 1, tag[p]);
tag[p] = Tag();
}
void update(int l, int r, int x, const Info &v, int p){
if(l == r){
info[p] = v;
return ;
}
down(p);
int mid = (l + r) >> 1;
if(x <= mid)update(l, mid, x, v, p << 1);
else update(mid + 1, r, x, v, p << 1 | 1);
up(p);
}
void update(int x, const Info &v){
update(1, n, x, v, 1);
}
Info rangeQuery(int l, int r, int x, int y, int p){
if(x <= l && r <= y)return info[p];
Info res = Info();
down(p);
int mid = (l + r) >> 1;
if(x <= mid)res = res + rangeQuery(l, mid, x, y, p << 1);
if(y > mid)res = res + rangeQuery(mid + 1, r, x, y, p << 1 | 1);
return res;
}
Info rangeQuery(int l, int r){
return rangeQuery(1, n, l, r, 1);
}
void rangeUpdate(int l, int r, int x, int y, const Tag &val, int p){
if(x <= l && r <= y){
cg(p, val);
return ;
}
down(p);
int mid = (l + r) >> 1;
if(x <= mid)rangeUpdate(l, mid, x, y, val, p << 1);
if(y > mid)rangeUpdate(mid + 1, r, x, y, val, p << 1 | 1);
up(p);
}
void rangeUpdate(int l, int r, const Tag &val){
rangeUpdate(1, n, l, r, val, 1);
}
template<class F>
int findFirst(int l, int r, int x, int y, int p, F &&check){
if(x <= l && r <= y){
if(!check(info[p]))return -1;
if(l == r)return l;
}
down(p);
int mid = (l + r) >> 1;
if(x <= mid){
int res = findFirst(l, mid, x, y, p << 1, check);
if(res != -1)return res;
}
if(y > mid)return findFirst(mid + 1, r, x, y, p << 1 | 1, check);
return -1;
}
template<class F>
int findFirst(int l, int r, F &&check){
return findFirst(1, n, l, r, 1, check);
}
template<class F>
int findLast(int l, int r, int x, int y, int p, F &&check){
if(x <= l && r <= y){
if(!check(info[p]))return -1;
if(l == r)return l;
}
down(p);
int mid = (l + r) >> 1;
if(y > mid){
int res = findLast(mid + 1, r, x, y, p << 1 | 1, check);
if(res != -1)return res;
}
if(x <= mid)return findLast(l, mid, x, y, p << 1, check);
return -1;
}
template<class F>
int findLast(int l, int r, F &&check){
return findLast(1, n, l, r, 1, check);
}
};
struct Tag{
matrix tag;
Tag() : tag(4) {}
Tag(matrix _tag) : tag(_tag){}
void apply(Tag t){
tag = tag * t.tag;
}
};
struct Info{
matrix val;
Info() : val(1, 4) {}
Info(matrix _val) : val(_val) {}
void apply(Tag t){
val = val * t.tag;
}
};
Info operator+ (const Info &a, const Info &b){
Info res = Info();
res.val = a.val + b.val;
return res;
}
void solve(){
int n, m, q; cin >> n >> m >> q;
vector<int> a(n + 1);
for(int i = 1; i <= n; i++) cin >> a[i];
vector<array<int, 3>> b(m + 1);
vector<vector<array<int, 4>>> Q(m + 1);
for(int i = 1; i <= m; i++){
int l, r, x; cin >> l >> r >> x;
b[i] = {l, r, x};
}
vector<mint> ans(q + 1);
for(int i = 1; i <= q; i++){
int l, r, x, y; cin >> l >> r >> x >> y;
if(x != 0)Q[x - 1].push_back({l, r, -1, i});
Q[y].push_back({l, r, 1, i});
}
LazySegmentTree<Info, Tag> tr(n);
for(int i = 1; i <= n; i++){
matrix temp({{1, a[i], a[i] * a[i] % mod, a[i] * a[i] % mod}});
tr.update(i, {temp});
}
for(int i = 0; i <= m; i++){
if(i){
auto [l, r, x] = b[i];
matrix temp(4);
temp.m[2][3] = 1;
if(l > 1)tr.rangeUpdate(1, l - 1, {temp});
if(r < n)tr.rangeUpdate(r + 1, n, {temp});
temp.m[0][1] = x;
temp.m[0][2] = x * x % mod;
temp.m[0][3] = x * x % mod;
temp.m[1][2] = 2 * x % mod;
temp.m[1][3] = 2 * x % mod;
tr.rangeUpdate(l, r, {temp});
}
for(auto [l, r, f, id] : Q[i]){
if(f == 1)ans[id] += tr.rangeQuery(l, r).val.m[0][3];
else ans[id] -= tr.rangeQuery(l, r).val.m[0][3];
}
}
for(int i = 1; i <= q; i++){
cout << ans[i] << '\n';
}
return ;
}
signed main(){
ios::sync_with_stdio(false);
cin.tie(0);
int t = 1;
// cin >> t;
while(t--)solve();
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3584kb
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: 0ms
memory: 3560kb
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: 3ms
memory: 3716kb
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:
400489222 480617351 531108525 254983761 446689548 764223236 142229431 307405789 39817281 66225912 247029353 46506707 529135498 578008236 201809860 674078444 746060191 171471121 722471473 657196163 861551838 606551808 360903956 401221326 767571915 669762004 163759234 141144218 579174939 276557168 518...
result:
wrong answer 42nd numbers differ - expected: '897565782', found: '-102434225'