oj.uz

Submission #684572

# Submission time Handle Problem Language Result Execution time Memory
684572 2023-01-21T18:52:00 Z Nursik Street Lamps (APIO19_street_lamps) C++14
100 / 100
 554 ms 71968 KB 
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
#include <set>
#include <map>
#include <cstring>
#include <string>
#include <cmath>
#include <cassert>
#include <ctime>
#include <algorithm>
#include <sstream>
#include <list>
#include <queue>
#include <deque>
#include <stack>
#include <cstdlib>
#include <cstdio>
#include <iterator>
#include <functional>
#include <unordered_set>
#include <unordered_map>
#include <stdio.h>
#include <bitset>
#include <random>
#include <chrono>
 
using namespace std;
 
#define ll long long
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define ld long double
 
const ll maxn = 1e6 + 1, maxm = 80;
const ll mod = 1e9 + 7, inf = 1e9, blck = 500;
const ld eps = 1e-9;
 
int n, q;
string s, type;
set<int> setik;
ll rng(){
    return (((ll)rand() << 15) + rand());
}
struct tnode{
    ll pos, sum, y, prior;
    tnode *l, *r;
    tnode(int x, int z){
        pos = x;
        y = z;
        sum = z;
        prior = rng();
        l = r = nullptr;
    }
};
struct treap{
    ll getsum(tnode* v){
        return (v ? v->sum : 0);
    }
    void pull(tnode* v){
        v->sum = getsum(v->l) + v->y + getsum(v->r);
    }
    pair<tnode*, tnode*> split(tnode* &v, int val){
        if (v == nullptr)
            return {v, v};
        if (v->pos < val){
            pair<tnode*, tnode*> splitted = split(v->r, val);
            v->r = splitted.f;
            pull(v);
            return mp(v, splitted.s);
        }
        else{
            pair<tnode*, tnode*> splitted = split(v->l, val);
            v->l = splitted.s;
            pull(v);
            return mp(splitted.f, v);
        }
    }
    tnode *merge(tnode *l, tnode *r){
        if (l == nullptr || r == nullptr){
            return (l ? l : r);
        }
        if (l->prior > r->prior){
            l->r = merge(l->r, r);
            pull(l);
            return l;
        }
        else{
            r->l = merge(l, r->l);
            pull(r);
            return r;
        }
    }
    int is(tnode* &v, int x, ll z){
        if (v == nullptr)
            return 0;
        if (v->pos == x){
            v->y += z;
            pull(v);
            return 1;
        }
        int ok = 0;
        if (v->pos < x){
            ok = is(v->r, x, z);
        }
        else{
            ok = is(v->l, x, z);
        }
        pull(v);
        return ok;
    }
    void insval(tnode* &v, int x, int z){
        if (is(v, x, z)){
            return;
        }
        pair<tnode*, tnode*> split1 = split(v, x);
     /*   if (z == -4){
            cout << "kek\n";
            cout << x << '\n';
            cout << split1.f->pos << '\n';
            cout << split1.f->sum << " " << split1.f->y << '\n';
            cout << "aloha\n";
            cout << split1.s->pos << '\n';
            cout << split1.s->sum << " " << split1.s->y << '\n';;
            cout << z << '\n';
        }*/
        tnode* cur = new tnode(x, z);
        cur = merge(split1.f, cur);
      /*  if (z == -4){
            cout << cur->sum << '\n';
        }*/
        v = merge(cur, split1.s);
        /*if (z == -4){
            cout << v->sum << '\n';
            cout << v->y << '\n';
        }*/
        return; 
    }
    int get(int r, tnode* &v){
        if (v == nullptr)
            return 0;
        if (v->pos <= r){
            return getsum(v->l) + v->y + get(r, v->r);
        }
        else{
            return get(r, v->l);
        }
    }
} tree;
/*
 kek
2
1
3 3
aloha
3
4 1
-4
-1
3
1
4 1 2 4
*/
struct seg_tree{
    tnode *t[maxn << 2];
    void upd(int l, int r, int l2, int r2, int add, int v = 1, int tl = 1, int tr = n){
        if (l > tr || r < tl)
            return;
        if (l <= tl && tr <= r){
            tree.insval(t[v], l2, add);
            tree.insval(t[v], r2, -add);
          //  cout << v << " " << l2 << " " << r2 << " " << add << '\n';
            return;
        }
        int tm = (tl + tr) / 2;
        upd(l, r, l2, r2, add, v + v, tl, tm);
        upd(l, r, l2, r2, add, v + v + 1, tm + 1, tr);
    }
    int get(int l, int r, int v = 1, int tl = 1, int tr = n){
        if (l > tr || r < tl)
            return 0;
        if (tl == tr){
            int kek = tree.get(r, t[v]);
         //   cout << v << " " << kek << '\n';
            return kek;
        }
        int tm = (tl + tr) / 2;
        int add = tree.get(r, t[v]);
       // cout << "sum\n";
       // cout << v << " " << tl << " " << tr << " " << add << '\n';
        if (l <= tm){
            add += get(l, r, v + v, tl, tm);
        }
        else{
            add += get(l, r, v + v + 1, tm + 1, tr);
        }
        return add;
    }
} tree2;
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0); 
    cin >> n >> q;
    cin >> s;
    s = '#'+ s;
    setik.insert(0);
    setik.insert(n + 1);
    for (int i = 1; i <= n; ++i){
        if (s[i] == '0'){
            setik.insert(i);
        }
    }
    for (int x, l, r, i = 1; i <= q; ++i){
        cin >> type;
        if (type == "toggle"){
            cin >> x;
            if (s[x] == '0'){
                setik.erase(x);
                auto it = setik.upper_bound(x);
                r = *it;
                l = *(--it) + 1;
                tree2.upd(l, x, x, r, -i);
                s[x] = '1';
            }
            else{
                auto it = setik.upper_bound(x);
                r = *it;
                l = *(--it) + 1;
                setik.insert(x);
                tree2.upd(l, x, x, r, i);
                s[x] = '0';
            }
          //  cout << tree.get(1, tree2.t[4]) << " " << tree.get(2, tree2.t[4]) << " " << tree.get(3, tree2.t[4]) << '\n';
        }
        else{
            cin >> l >> r;
            int add = 0;
            auto it = setik.lower_bound(l);
            if (*it > r - 1){
                add = 1;
            }
           // cout << tree2.get(l, r - 1) << '\n';
            cout << tree2.get(l, r - 1) + add * i << '\n';
        }
    }
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 4492 KB Output is correct
2 Correct 148 ms 5060 KB Output is correct
3 Correct 213 ms 8788 KB Output is correct
4 Correct 408 ms 42424 KB Output is correct
5 Correct 404 ms 49340 KB Output is correct
6 Correct 433 ms 45428 KB Output is correct
7 Correct 365 ms 21168 KB Output is correct
8 Correct 134 ms 8564 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 554 ms 71968 KB Output is correct
6 Correct 485 ms 61928 KB Output is correct
7 Correct 399 ms 48096 KB Output is correct
8 Correct 129 ms 7528 KB Output is correct
9 Correct 69 ms 3980 KB Output is correct
10 Correct 83 ms 4368 KB Output is correct
11 Correct 79 ms 4532 KB Output is correct
12 Correct 346 ms 20128 KB Output is correct
13 Correct 128 ms 7592 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 289 ms 20132 KB Output is correct
6 Correct 376 ms 35124 KB Output is correct
7 Correct 415 ms 45036 KB Output is correct
8 Correct 460 ms 55536 KB Output is correct
9 Correct 165 ms 4364 KB Output is correct
10 Correct 147 ms 3484 KB Output is correct
11 Correct 151 ms 4352 KB Output is correct
12 Correct 137 ms 3388 KB Output is correct
13 Correct 160 ms 4260 KB Output is correct
14 Correct 136 ms 3420 KB Output is correct
15 Correct 348 ms 21288 KB Output is correct
16 Correct 126 ms 8700 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 133 ms 4492 KB Output is correct
9 Correct 148 ms 5060 KB Output is correct
10 Correct 213 ms 8788 KB Output is correct
11 Correct 408 ms 42424 KB Output is correct
12 Correct 404 ms 49340 KB Output is correct
13 Correct 433 ms 45428 KB Output is correct
14 Correct 365 ms 21168 KB Output is correct
15 Correct 134 ms 8564 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 554 ms 71968 KB Output is correct
21 Correct 485 ms 61928 KB Output is correct
22 Correct 399 ms 48096 KB Output is correct
23 Correct 129 ms 7528 KB Output is correct
24 Correct 69 ms 3980 KB Output is correct
25 Correct 83 ms 4368 KB Output is correct
26 Correct 79 ms 4532 KB Output is correct
27 Correct 346 ms 20128 KB Output is correct
28 Correct 128 ms 7592 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 289 ms 20132 KB Output is correct
34 Correct 376 ms 35124 KB Output is correct
35 Correct 415 ms 45036 KB Output is correct
36 Correct 460 ms 55536 KB Output is correct
37 Correct 165 ms 4364 KB Output is correct
38 Correct 147 ms 3484 KB Output is correct
39 Correct 151 ms 4352 KB Output is correct
40 Correct 137 ms 3388 KB Output is correct
41 Correct 160 ms 4260 KB Output is correct
42 Correct 136 ms 3420 KB Output is correct
43 Correct 348 ms 21288 KB Output is correct
44 Correct 126 ms 8700 KB Output is correct
45 Correct 63 ms 2632 KB Output is correct
46 Correct 92 ms 2808 KB Output is correct
47 Correct 223 ms 20016 KB Output is correct
48 Correct 394 ms 42040 KB Output is correct
49 Correct 113 ms 4444 KB Output is correct
50 Correct 94 ms 4336 KB Output is correct
51 Correct 81 ms 4556 KB Output is correct
52 Correct 90 ms 4852 KB Output is correct
53 Correct 90 ms 4812 KB Output is correct
54 Correct 89 ms 4808 KB Output is correct