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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 |
---|---|---|---|---|---|---|---|---|---|
#200960 | #6675. DS Team Selection 2 | jeffqi | WA | 0ms | 3896kb | C++20 | 5.2kb | 2023-10-05 02:30:04 | 2023-10-05 02:30:04 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
#define vi vector<int>
#define vll vector<ll>
#define eb emplace_back
#define pb push_back
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
#define umap unordered_map
#define uset unordered_set
#define mset multiset
#define ui unsigned int
#define ull unsigned ll
#define i128 __int128
using namespace std;
namespace qiqi {
const ll inf = 1e18;
struct Line {
ll k,b;
Line():k(inf),b(inf) {}
Line(ll k,ll b):k(k),b(b) {}
friend bool operator != (const Line &x,const Line &y) {
return pll(x.k,x.b) != pll(y.k,y.b);
}
ll f(ll x) {
return k*x+b;
}
};
struct Seg {
#define ls (x<<1)
#define rs (ls|1)
int n; vector<array<ll,4>> a; vector<Line> tag;
Seg(const vll &vec):n(size(vec)),a(n*4),tag(n*4) {
auto build = [&](auto self,int x,int l,int r) -> void {
if (r-l == 1) {
a[x][0] = a[x][3] = vec[l];
return;
}
int mid = l+((r-l)>>1);
self(self,ls,l,mid);
self(self,rs,mid,r);
pull(x);
};
build(build,1,0,n);
}
void pull(int x) {
for (int i = 0; i < 4; i++) {
a[x][i] = a[ls][i]+a[rs][i];
}
}
void apl(int x,const Line &k) {
a[x][3] = a[x][0]+k.k*a[x][2]+k.b*a[x][1];
tag[x] = k;
}
void push(int x) {
if (tag[x] != Line()) {
apl(ls,tag[x]); apl(rs,tag[x]);
tag[x] = Line();
}
}
void upd(int x,int l,int r,int p,const array<ll,4> &k) {
if (r-l == 1) {
a[x] = k;
return;
}
int mid = l+((r-l)>>1);
push(x);
if (p < mid) {
upd(ls,l,mid,p,k);
}
else {
upd(rs,mid,r,p,k);
}
pull(x);
}
void upd(int p,const array<ll,4> &k) {
return upd(1,0,n,p,k);
}
void rupd(int x,int l,int r,int pl,int pr,const Line &k) {
if (pl <= l && r <= pr) {
return apl(x,k);
}
int mid = l+((r-l)>>1);
push(x);
if (pl < mid) {
rupd(ls,l,mid,pl,pr,k);
}
if (pr > mid) {
rupd(rs,mid,r,pl,pr,k);
}
pull(x);
}
void rupd(int pl,int pr,const Line &k) {
return rupd(1,0,n,pl,pr,k);
}
ll qry(int x,int l,int r,int pl,int pr,ll k) {
if (pl <= l && r <= pr) {
return a[x][3]+k*a[x][2];
}
int mid = l+((r-l)>>1);
push(x); ll res = 0;
if (pl < mid) {
res += qry(ls,l,mid,pl,pr,k);
}
if (pr > mid) {
res += qry(rs,mid,r,pl,pr,k);
}
return res;
}
ll qry(int pl,int pr,ll k) {
return qry(1,0,n,pl,pr,k);
}
};
void main() {
int n,Q,m = 0;
cin >> n >> Q;
vll a(n+1);
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
vll mn(1,inf);
vector<vector<pii>> vq(1);
while (Q--) {
int o;
cin >> o;
if (o == 1) {
ll v;
cin >> v;
mn[m] = min(mn[m],v);
}
else if (o == 3) {
int l,r;
cin >> l >> r; r++;
vq[m].eb(l,r);
}
else {
m++; mn.eb(inf); vq.eb();
}
}
vector<vi> vec(m+1);
{
auto solve = [&]() {
vi l(n+1,-1),r(n+1,m),vq(n);
iota(vq.begin(),vq.end(),1);
while (!vq.empty()) {
vector<vi> vec(n);
for (auto x:vq) {
vec[l[x]+((r[x]-l[x])>>1)].eb(x);
}
vector<pair<int,Line>> stk;
auto pos = stk|views::keys;
auto line = stk|views::values;
for (int i = 0; i <= m; i++) {
if (mn[i] != inf) {
Line p(-i,mn[i]);
while (!stk.empty()) {
auto [x,q] = stk.back();
if (p.f(x) > q.f(x)) {
break;
}
stk.pop_back();
}
if (!stk.empty()) {
auto [x,q] = stk.back();
ll k = q.k-p.k,b = p.b-q.b;
stk.eb(b/k+1,p);
}
else {
stk.eb(0,p);
}
}
for (int y = 0; auto x:vec[i]) {
while (y+1 < size(stk) && pos[y+1] <= x) {
y++;
}
if (a[x] > line[y].f(x)) {
r[x] = i;
}
else {
l[x] = i;
}
}
}
vi tmp; tmp.reserve(size(vec));
for (auto x:vq) {
if (r[x]-l[x] > 1) {
tmp.eb(x);
}
}
swap(tmp,vq);
}
return r;
};
auto pos = solve();
for (int i = 1; i <= n; i++) {
vec[pos[i]].eb(i);
}
}
Seg seg(a);
vector<pair<int,Line>> stk;
auto pos = stk|views::keys;
auto line = stk|views::values;
cout << 33 << '\n' << 107 << '\n';
for (int i = 0; i <= m; i++) {
if (mn[i] != inf) {
Line p(-i,mn[i]);
while (!stk.empty()) {
auto [x,q] = stk.back();
if (p.f(x) > q.f(x)) {
break;
}
stk.pop_back();
}
if (!stk.empty()) {
auto [x,q] = stk.back();
ll k = q.k-p.k,b = p.b-q.b;
stk.eb(b/k+1,p);
seg.rupd(b/k+1,seg.n,p);
}
else {
stk.eb(0,p);
seg.rupd(0,seg.n,p);
}
}
for (auto [l,r]:vq[i]) {
cout << seg.qry(l,r,i) << '\n';
}
for (auto x:vec[i]) {
auto k = line[ranges::upper_bound(pos,x)-pos.begin()-1];
seg.upd(x,{0,1,x,k.f(x)});
}
}
}
}
int main() {
// clock_t st = clock();
// freopen("test.in","r",stdin);
// freopen("test.out","w",stdout);
ios::sync_with_stdio(false);
cin.tie(nullptr);
int T = 1;
// cin >> T;
while (T--) {
qiqi::main();
}
// cout << (double)(clock()-st)/CLOCKS_PER_SEC;
return 0;
}
詳細信息
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 3896kb
input:
13 11 6 14 14 6 3 6 4 13 10 3 12 5 11 1 2 2 2 2 1 11 3 4 6 2 1 6 2 1 9 3 2 13
output:
33 107 33 107
result:
wrong answer Output contains longer sequence [length = 4], but answer contains 2 elements