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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 |
---|---|---|---|---|---|---|---|---|---|
#602223 | #6701. BaoBao Loves Reading | PonyHex | RE | 1ms | 3512kb | C++20 | 5.0kb | 2024-09-30 21:18:35 | 2024-09-30 21:18:37 |
Judging History
answer
#define _CRT_SECURE_NO_WARNINGS 1
#include<bits/stdc++.h>
#include<unordered_map>
#include<unordered_set>
using namespace std;
//#define ll long long
#define ll int
#define double long double
#define lc u<<1
#define rc u<<1|1
#define X first
#define Y second
#define endl "\n"
//#define int long long
const int N = 1e5 + 50;
const int M = 2e5 + 5;
const ll maxm = 1e18 + 5;
const ll mod = 998244353;
int dx[] = { -1,0,1,0 };
int dy[] = { 0,1,0,-1 };
//random_shuffle(id + 1, id + n + 1);
ll ksm(ll a, ll b);
ll gcd(ll a, ll b);
template<class T>inline void read(T& x) {
x = 0;
char c = getchar();
while (!isdigit(c))c = getchar();
while (isdigit(c))x = x * 10 + (c & 15), c = getchar();
}
void write(ll x)
{
if (x < 0)
putchar('-'), x = -x;
if (x > 9)
write(x / 10);
putchar(x % 10 + '0');
return;
}
ll a[N], ans[N];
vector<pair<ll, ll> >qu;
ll ne[N];
unordered_map<ll, ll>ex;
unordered_map<ll, ll>pos;
struct node {
ll val, l, r;
ll lazy;
}t[N*4*10];
void pushup(ll u) {
t[u].val = t[lc].val + t[rc].val;
}
void pushdown(ll u) {
if (t[u].lazy) {
t[lc].val += (t[lc].r - t[lc].l + 1)* t[u].lazy;
t[lc].lazy += t[u].lazy;
t[rc].val += (t[rc].r - t[rc].l + 1)* t[u].lazy;
t[rc].lazy += t[u].lazy;
t[u].lazy = 0;
}
}
void build_ST(ll u, ll l, ll r) {
t[u].l = l, t[u].r = r;
t[u].val = 0;
if (l == r) {
return;
}
ll mid = (l + r) >> 1;
build_ST(lc, l, mid);
build_ST(rc, mid + 1, r);
pushup(u);
}
void modify(ll u, ll x, ll y,ll p) {
if (x <= t[u].l && t[u].r <= y) {
t[u].lazy+=p; t[u].val += (t[u].r - t[u].l + 1)*p;
return;
}
pushdown(u);
ll mid = (t[u].l + t[u].r) >> 1;
if (x <= mid)modify(lc, x, y,p);
if (mid < y)modify(rc, x, y,p);
pushup(u);
}
ll query(ll u, ll x) {
if (t[u].l==t[u].r) {
return t[u].val;
}
pushdown(u);
ll mid = (t[u].l + t[u].r) >> 1;
ll re = 0;
if (x <= mid)re += query(lc, x);
else re += query(rc, x);
pushup(u);
return re;
}
void solve()
{
//先理解一下题意,假设现在容量为3,那么我们完全可以以4为区间长度
//滑动窗口,判断区间内不同的元素的数量,不对,还是要区间长度3来模拟
//动态出入,走一遍,已知记录队列中不同元素的个数即可
//比如,当前队列中有3个不同的元素,放入一个元素还是三个
//这个时候,应该判断3的位置,
//有点思路,我们遍历走到某个节点的时候,如果见到了元素3
//元素3会被放到书桌的最上方,判断3,是否会被放回书架在拿回来
//我们应该判断到下一个3,这段区间内有多少个不同的元素
//只有不同的元素才会将3不断向后放,
//ans还会加上数组内不同元素的个数,因为在初次入队的时候,
//那些元素是从书架上拿下来的
///想的是对的写的是错的,我们记录的不应该是区间长度
//我们记录的应该是区间内不同元素的个数,set维护一下应该不会t吧
ll n; cin >> n;
for (int i = 1; i <= n; i++)cin >> a[i], ex[a[i]] = 1, ans[i] = 0, ne[i] = 0;
build_ST(1, 1, n);
//重写一发, 维护区间内不同元素的个数,我有经验,
//首先应该使,查询升序
for (int i = 1; i <= n; i++) {
if (pos[a[i]] == 0) {
pos[a[i]] = i; continue;
}
ne[pos[a[i]]] = i-1;
qu.push_back({ pos[a[i]],i });
pos[a[i]] = i;
}
sort(qu.begin(), qu.end());
for (int i = 1; i <= n; i++) {
//cout << i << " " << ne[i] << endl;
if (ne[i] == 0) {
modify(1,i,n,1);
}
else {
modify(1, i, ne[i],1);
}
}
//建树完成,
//首先一个元素在提供,仅在他在区间之内,且仅持续到离他最近的元素
//我们,以左区间端点为升序
ll pr = 1;
for (auto p = qu.begin(); p != qu.end(); p++) {
//对于走过的节点,我们消去对后续的影响
//走到某个节点,要保证之前的节点全部消去
//
ll po = p->X;
for (int i = pr; i <= po; i++) {
//cout << "kklk" << i << " " << ne[i] << endl;
if (ne[i] == 0) {
modify(1, i, n, -1);
}
else {
modify(1, i, ne[i], -1);
}
}
pr = po + 1;
ll len = 0;
//if(p->Y!=p->X+1)
len = query(1,p->Y);//忘了还有交叉的情况
//cout << p->X << " " << p->Y << endl;
//cout << len << endl;
ans[1]++; ans[len]--;
}
ll mid = 0;
for (int i = 1; i <= n; i++) {
mid += ans[i];
ans[i] = mid;
}
cout << ans[1] + ex.size();
for (int i = 2; i <= n; i++)cout << " " << ans[i] + ex.size();
cout << endl;
qu.clear(); ex.clear(); pos.clear();
return;
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
int T = 1;
cin >> T;
//read(T);
while (T--)
solve();
return 0;
}
/*PonyHex*/
ll ksm(ll a, ll b) {
ll base = a;
ll ans = 1;
while (b) {
if (b & 1)ans *= base % mod;
ans %= mod;
base *= base; base %= mod;
b >>= 1;
}
return ans % mod;
}
ll gcd(ll a, ll b) {
return b ? gcd(b, a % b) : a;
}
详细
Test #1:
score: 100
Accepted
time: 1ms
memory: 3512kb
input:
1 7 4 3 4 2 3 1 4
output:
7 6 5 4 4 4 4
result:
ok single line: '7 6 5 4 4 4 4'
Test #2:
score: -100
Runtime Error
input:
100 73 45 45 2 2 2 45 35 45 16 35 16 45 35 2 16 16 45 2 45 45 16 35 35 16 35 35 2 2 2 35 45 35 45 35 16 35 2 2 16 35 16 45 45 16 45 2 16 16 35 16 45 16 45 45 16 16 35 35 35 35 45 45 45 35 16 16 16 2 16 16 35 16 2 83 78 52 7 35 33 82 51 27 45 34 17 51 55 25 26 11 52 41 25 41 13 46 33 83 83 7 40 51 33...