oj.uz

답안 #515800

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
515800 2022-01-19T17:56:46 Z Jarif_Rahman Fire (JOI20_ho_t5) C++17
8 / 100
 1000 ms 51252 KB 
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

#define debug(s) for(auto x: s) cerr << x << " "; cerr << #s << "\n";

struct segtree{
    struct node{
        ll sm, lazy_sm;
        node(){
            sm = 0, lazy_sm = 0;
        }
        node(ll x){
            sm = x, lazy_sm = 0;
        }
        node operator+(node a){
            node rt;
            rt.sm = sm+a.sm;
            return rt;
        }
        void pushdown_from(node a, int sz){
            sm+=a.lazy_sm*sz;
            lazy_sm+=a.lazy_sm;
        }
    };
    int k;
    vector<node> v;
    segtree(int n){
        k = 1;
        while(k < n) k*=2;
        k*=2;
        v.resize(k, node());
    }
    void add(int l, int r, int nd, int a, int b, ll x){
        if(a > r || b < l) return;
        if(a >= l && b <= r){
            v[nd].sm+=(b-a+1)*x;
            v[nd].lazy_sm+=x;
            return;
        }
        int md = (a+b)/2;
        v[2*nd].pushdown_from(v[nd], md-a+1);
        v[2*nd+1].pushdown_from(v[nd], b-md);
        v[nd].lazy_sm = 0;
        add(l, r, 2*nd, a, md, x);
        add(l, r, 2*nd+1, md+1, b, x);
        v[nd] = v[2*nd]+v[2*nd+1];
    }
    void add(int l, int r, int x){
        add(l, r, 1, 0, k/2-1, x);
    }
    ll sum(int l, int r, int nd, int a, int b){
        if(a > r || b < l) return 0;
        if(a >= l && b <= r) return v[nd].sm;
        int md = (a+b)/2;
        v[2*nd].pushdown_from(v[nd], md-a+1);
        v[2*nd+1].pushdown_from(v[nd], b-md);
        v[nd].lazy_sm = 0;
        ll rt = sum(l, r, 2*nd, a, md) + sum(l, r, 2*nd+1, md+1, b);
        v[nd] = v[2*nd]+v[2*nd+1];
        return rt;
    }
    ll sum(int l, int r){
        return sum(l, r, 1, 0, k/2-1);
    }
};

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n, q; cin >> n >> q;
    vector<ll> s(n);
    for(ll &x: s) cin >> x;

    vector<int> prev(n, -1);
    stack<int> st;
    for(int i = n-1; i >= 0; i--){
        while(!st.empty() && s[i] > s[st.top()]) prev[st.top()] = i, st.pop();
        st.push(i);
    }
    while(!st.empty()) st.pop();

    vector<vector<int>> end(n+1);
    vector<vector<pair<int, int>>> chng(n+1);
    for(int i = 0; i < n; i++){
        while(!st.empty() && s[st.top()] <= s[i]){
            int x = st.top();
            st.pop();
            end[i-x-1].pb(x);
            if(prev[x] == -1) continue;
            if(s[prev[x]] <= s[i]) continue;
            chng[i-prev[x]-1].pb({prev[x], i});
        }
        st.push(i);
    }
    while(!st.empty()) end[n-st.top()-1].pb(st.top()), st.pop();

    vector<vector<array<int, 3>>> queries(n);
    for(int i = 0; i < q; i++){
        int t, l, r; cin >> t >> l >> r; t--, l--, r--;
        queries[t].pb({l, r, i});
    }

    vector<ll> ans(q, 0);
    segtree ss(n), s1(n), s2(n);
    for(int i = 0; i < n; i++) ss.add(i, i, s[i]);
    for(int i = 0; i+1 < n; i++) s1.add(i, i, max(0LL, s[i]-s[i+1]));

    for(int t = 1; t <= n; t++){
        for(int in: end[t-1]){
            ll x = s1.sum(in, in);
            if(in != n-1) ss.add(in+1, in+t-1, x);
            s1.add(in, in, -x);
        }
        for(auto [in, nxt]: chng[t-1]){
            ll x = s1.sum(in, in);
            ll y = x-(s[in]-s[nxt]);
            ss.add(in+1, nxt-1, y);
            s1.add(in, in, (s[in]-s[nxt])-x);
        }
        for(auto [l, r, in]: queries[t-1]){
            ans[in]+=ss.sum(l, r);

            int mx, a, b;
            if(t <= r-l+1){
                mx = t;
                a = l, b = r-mx+1;
                a--, b--;
                a = max(a, 0);
            }
            else{
                mx = r-l+1;
                a = r-t+1, b = l;
                a--, b--;
                a = max(a, 0);
            }

            ans[in]+=s1.sum(a, b)*mx;
            for(int i = a-1, c = mx-1; i >= 0 && c > 0; i--, c--) ans[in]+=s1.sum(i, i)*c;
            for(int i = b+1, c = mx-1; i < n && c > 0; i++, c--) ans[in]+=s1.sum(i, i)*c;
        }
    }

    for(ll x: ans) cout << x << "\n";
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 360 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 356 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct

Subtask #2
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Execution timed out 1089 ms 46620 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 621 ms 50572 KB Output is correct
3 Correct 603 ms 50232 KB Output is correct
4 Correct 637 ms 51252 KB Output is correct
5 Correct 604 ms 50360 KB Output is correct
6 Correct 605 ms 50728 KB Output is correct
7 Correct 599 ms 50780 KB Output is correct
8 Correct 624 ms 50512 KB Output is correct
9 Correct 621 ms 50260 KB Output is correct
10 Correct 585 ms 50036 KB Output is correct
11 Correct 616 ms 51004 KB Output is correct
12 Correct 603 ms 50716 KB Output is correct
13 Correct 629 ms 50868 KB Output is correct
14 Correct 598 ms 50320 KB Output is correct
15 Correct 643 ms 50932 KB Output is correct
16 Correct 660 ms 50588 KB Output is correct

Subtask #4
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1091 ms 47912 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 360 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 356 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Execution timed out 1089 ms 46620 KB Time limit exceeded
34 Halted 0 ms 0 KB -