oj.uz

Submission #1078346

# Submission time Handle Problem Language Result Execution time Memory
1078346 2024-08-27T15:40:39 Z Tymond Street Lamps (APIO19_street_lamps) C++17
100 / 100
 1020 ms 245372 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define fi first
#define se second
#define vi vector<int>
#define vll vector<long long>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);}
#ifdef DEBUG
auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";}
#define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X)
#else
#define debug(...){}
#endif

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

struct Node{
    ll s;
    int nxt[2];
    Node(){
        s = 0LL;
        nxt[0] = nxt[1] = -1;
    }
};

const int MAXN = 3e5 + 7;
const int BASE = (1 << 19);
int vec[MAXN];
vector<Node> tree[2 * BASE + 7];
int n, q;
string napis;
map<pii, int> date;

ll query(int ind, int l, int p, int k, int des){
    //cout << ind << ' ' << l << ' ' << p << '\n';
    if(l == p){
       // cout << tree[k][ind].s << '\n';
        return tree[k][ind].s;
    }

    int mid = (l + p) / 2;
    ll ret = tree[k][ind].s;
    if(des <= mid){
        if(tree[k][ind].nxt[0] != -1){
            ret += query(tree[k][ind].nxt[0], l, mid, k, des);
        }
    }else{
        if(tree[k][ind].nxt[1] != -1){
            ret += query(tree[k][ind].nxt[1], mid + 1, p, k, des);
        }
    }
    return ret;
}

ll getRes(int x, int y){
    //cout << "----------\nZAPYTANIE\n";
    //cout << x << ' ' << y << '\n';
    x += BASE;
    ll res = 0;
    while(x > 0){
        if(sz(tree[x])){
            //cout << "----\n";
            //cout << x << '\n';
            res += query(0, 0, BASE - 1, x, y);
        }
        x /= 2;
    }
    return res;
}

void updY(int ind, int l, int p, int a, int b, int val, int k){
    if(p < a || b < l){
        return;
    }
    if(a <= l && p <= b){
        //cout << "DODAJE: " << k << ' ' << ind << ' ' << val << '\n';
        tree[k][ind].s += val;
        return;
    }

    int mid = (l + p) / 2;
    if(a <= mid){
        if(tree[k][ind].nxt[0] == -1){
            tree[k].pb(Node());
            tree[k][ind].nxt[0] = sz(tree[k]) - 1;
        }
        updY(tree[k][ind].nxt[0], l, mid, a, b, val, k);
    }
    if(b >= mid + 1){
        if(tree[k][ind].nxt[1] == -1){
            tree[k].pb(Node());
            tree[k][ind].nxt[1] = sz(tree[k]) - 1;
        }
        updY(tree[k][ind].nxt[1], mid + 1, p, a, b, val, k);
    }
}

void updX(int v, int l, int p, int a, int b, int val){
    if(p < a || b < l){
        return;
    }

    if(a <= l && p <= b){
        //zrób dla drugiego wymiaru
        if(sz(tree[v]) == 0){
            tree[v].pb(Node());
        }

        updY(0, 0, BASE - 1, a, b, val, v);
        return;
    }

    int mid = (l + p) / 2;
    updX(2 * v, l, mid ,a, b, val);
    updX(2 * v + 1, mid + 1, p, a, b, val);
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n >> q;
    cin >> napis;

    for(int i = 0; i < n; i++){
        vec[i + 1] = napis[i] - '0';
    }

    set<pii> s;
    int i = 1;
    for(i = 1; i <= n; i++){
        if(vec[i] == 0){
            continue;
        }

        int pocz = i;
        while(i + 1 <= n && vec[i + 1] == 1){
            i++;
        }

        s.insert({pocz, i});
        date[{pocz, i}] = 0;
    }

    for(i = 1; i <= q; i++){
        string t;
        cin >> t;
      //  cerr << "NIGGA\n";
        if(t == "query"){
            int x, y;
            cin >> x >> y;
            y--;
            
            int ans = 0;
            if(vec[x]){
                auto it = s.upper_bound({x, 1e9});
                it--;
                //cout << (*it).fi << ' ' << (*it).se << '\n';
                if((*it).se >= y && (*it).fi <= x){
                    ans += (i - date[*it]);
                }
            }
            //cout << ans << '\n';
            ans += getRes(x, y);
            cout << ans << '\n';
        }else{
            int ind;
            cin >> ind;

            if(vec[ind] == 1){
                auto it = s.upper_bound({ind, 1e9});
                it--;
              //  cout << (*it).fi << ' ' << (*it).se << ' ' << i - date[*it] << '\n';
                updX(1, 0, BASE - 1, (*it).fi, (*it).se, i - date[*it]);
                pii akt = *it;
                s.erase(it);
                if(ind > akt.fi){
                    s.insert({akt.fi, ind - 1});
                    date[{akt.fi, ind - 1}] = i;
                }

                if(ind < akt.se){
                    s.insert({ind + 1, akt.se});
                    date[{ind + 1, akt.se}] = i;
                }
            }else{
                auto it = s.upper_bound({ind, 1e9});
                if(!vec[ind - 1] && !vec[ind + 1]){
                    s.insert({ind, ind});
                    date[{ind, ind}] = i;
                }else if(!vec[ind - 1]){
                    updX(1, 0, BASE - 1, (*it).fi, (*it).se, i - date[*it]);
                    pii akt = *it;
                    s.erase(it);
                    s.insert({ind, akt.se});
                    date[{ind, akt.se}] = i;
                }else if(!vec[ind + 1]){
                    it--;
                    updX(1, 0, BASE - 1, (*it).fi, (*it).se, i - date[*it]);
                    pii akt = *it;
                    s.erase(it);
                    s.insert({akt.fi, ind});
                    date[{akt.fi, ind}] = i;
                }else{
                    //cerr << "NIGGER\n";
                    //cerr << (*it).fi << ' ' << (*it).se << '\n';
                    updX(1, 0, BASE - 1, (*it).fi, (*it).se, i - date[*it]);
                    pii usu = *it;

                    it--;
                    updX(1, 0, BASE - 1, (*it).fi, (*it).se, i - date[*it]);
                    pii usu2 = *it;

                    s.erase(usu);
                    s.erase(usu2);
                    s.insert({usu2.fi, usu.se});
                    date[{usu2.fi, usu.se}] = i;
                  //  cout << usu2.fi << ' ' << usu.se << '\n';
                }
            }
            vec[ind] = 1 - vec[ind];
        }
    }

    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 24920 KB Output is correct
2 Correct 12 ms 24864 KB Output is correct
3 Correct 11 ms 25024 KB Output is correct
4 Correct 10 ms 24920 KB Output is correct
5 Correct 11 ms 24924 KB Output is correct
6 Correct 10 ms 24924 KB Output is correct
7 Correct 11 ms 24964 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 240 ms 29260 KB Output is correct
2 Correct 224 ms 30292 KB Output is correct
3 Correct 317 ms 37304 KB Output is correct
4 Correct 554 ms 128668 KB Output is correct
5 Correct 864 ms 206256 KB Output is correct
6 Correct 616 ms 140260 KB Output is correct
7 Correct 99 ms 32996 KB Output is correct
8 Correct 106 ms 34580 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 25692 KB Output is correct
2 Correct 12 ms 25688 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 11 ms 25112 KB Output is correct
5 Correct 1020 ms 245372 KB Output is correct
6 Correct 998 ms 237052 KB Output is correct
7 Correct 732 ms 206048 KB Output is correct
8 Correct 101 ms 34588 KB Output is correct
9 Correct 73 ms 28788 KB Output is correct
10 Correct 83 ms 28984 KB Output is correct
11 Correct 90 ms 29340 KB Output is correct
12 Correct 100 ms 32956 KB Output is correct
13 Correct 109 ms 34576 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 24920 KB Output is correct
2 Correct 11 ms 25180 KB Output is correct
3 Correct 12 ms 25432 KB Output is correct
4 Correct 12 ms 25544 KB Output is correct
5 Correct 177 ms 43748 KB Output is correct
6 Correct 390 ms 100940 KB Output is correct
7 Correct 587 ms 139752 KB Output is correct
8 Correct 875 ms 178336 KB Output is correct
9 Correct 232 ms 29840 KB Output is correct
10 Correct 222 ms 28160 KB Output is correct
11 Correct 231 ms 29520 KB Output is correct
12 Correct 218 ms 28244 KB Output is correct
13 Correct 228 ms 29520 KB Output is correct
14 Correct 219 ms 28276 KB Output is correct
15 Correct 104 ms 33000 KB Output is correct
16 Correct 105 ms 34532 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 24920 KB Output is correct
2 Correct 12 ms 24864 KB Output is correct
3 Correct 11 ms 25024 KB Output is correct
4 Correct 10 ms 24920 KB Output is correct
5 Correct 11 ms 24924 KB Output is correct
6 Correct 10 ms 24924 KB Output is correct
7 Correct 11 ms 24964 KB Output is correct
8 Correct 240 ms 29260 KB Output is correct
9 Correct 224 ms 30292 KB Output is correct
10 Correct 317 ms 37304 KB Output is correct
11 Correct 554 ms 128668 KB Output is correct
12 Correct 864 ms 206256 KB Output is correct
13 Correct 616 ms 140260 KB Output is correct
14 Correct 99 ms 32996 KB Output is correct
15 Correct 106 ms 34580 KB Output is correct
16 Correct 17 ms 25692 KB Output is correct
17 Correct 12 ms 25688 KB Output is correct
18 Correct 11 ms 25436 KB Output is correct
19 Correct 11 ms 25112 KB Output is correct
20 Correct 1020 ms 245372 KB Output is correct
21 Correct 998 ms 237052 KB Output is correct
22 Correct 732 ms 206048 KB Output is correct
23 Correct 101 ms 34588 KB Output is correct
24 Correct 73 ms 28788 KB Output is correct
25 Correct 83 ms 28984 KB Output is correct
26 Correct 90 ms 29340 KB Output is correct
27 Correct 100 ms 32956 KB Output is correct
28 Correct 109 ms 34576 KB Output is correct
29 Correct 11 ms 24920 KB Output is correct
30 Correct 11 ms 25180 KB Output is correct
31 Correct 12 ms 25432 KB Output is correct
32 Correct 12 ms 25544 KB Output is correct
33 Correct 177 ms 43748 KB Output is correct
34 Correct 390 ms 100940 KB Output is correct
35 Correct 587 ms 139752 KB Output is correct
36 Correct 875 ms 178336 KB Output is correct
37 Correct 232 ms 29840 KB Output is correct
38 Correct 222 ms 28160 KB Output is correct
39 Correct 231 ms 29520 KB Output is correct
40 Correct 218 ms 28244 KB Output is correct
41 Correct 228 ms 29520 KB Output is correct
42 Correct 219 ms 28276 KB Output is correct
43 Correct 104 ms 33000 KB Output is correct
44 Correct 105 ms 34532 KB Output is correct
45 Correct 101 ms 27476 KB Output is correct
46 Correct 124 ms 27736 KB Output is correct
47 Correct 297 ms 78160 KB Output is correct
48 Correct 518 ms 128228 KB Output is correct
49 Correct 79 ms 29008 KB Output is correct
50 Correct 73 ms 29012 KB Output is correct
51 Correct 87 ms 29280 KB Output is correct
52 Correct 82 ms 29524 KB Output is correct
53 Correct 73 ms 29520 KB Output is correct
54 Correct 73 ms 29516 KB Output is correct