Submission #1306657

#	Time	Username	Problem	Language	Result	Execution time	Memory
1306657		Tymond	Food Court (JOI21_foodcourt)	C++20	68 / 100	115 ms	24764 KiB

foodcourt

#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::high_resolution_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::high_resolution_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 pair_hash{
  size_t operator()(const pair<int,int>&x)const{
    return hash<long long>()(((long long)x.first)^(((long long)x.second)<<32));
  }
};

const ll INF = 1e18;

struct Update{
    int type, tm, mode;
    ll x;
    Update(int nt, int ntime, ll nx){
        type = nt;
        tm = ntime;
        x = nx;
        mode = 1;
    }
};

struct Node{
    ll mx, mn, lazyMx, lazyMn;
    Node(){
        mn = mx = lazyMx = lazyMn = 0LL;
    }

    Node(ll nx, ll nn, ll lx, ll ln){
        mx = nx;
        mn = nn;
        lazyMx = lx;
        lazyMn = ln;
    }
};

const int MAXN = 2e5 + 7;
const int BASE = (1 << 18);
int ans[MAXN];
int C[MAXN];
vector<Update> updates[MAXN];
vector<pair<int, ll>> queries[MAXN];//czas, Bi
Node tree[2 * BASE + 7];
int xd67[MAXN];
int n, m, q;

void Push(int v){
    tree[2 * v].mn += tree[v].lazyMn;
    tree[2 * v].lazyMn += tree[v].lazyMn;
    tree[2 * v + 1].mn += tree[v].lazyMn;
    tree[2 * v + 1].lazyMn += tree[v].lazyMn;
    tree[v].lazyMn = 0LL;

    tree[2 * v].mx += tree[v].lazyMx;
    tree[2 * v].lazyMx += tree[v].lazyMx;
    tree[2 * v + 1].mx += tree[v].lazyMx;
    tree[2 * v + 1].lazyMx += tree[v].lazyMx;
    tree[v].lazyMx = 0LL;
}

Node merge(Node a, Node b){
    Node res;
    res.mn = min(a.mn, b.mn);
    res.mx = max(a.mx, b.mx);
    return res;
}

int find(int v, int l, int p, ll val){
    if(l == p){
        return v - BASE;
    }
    Push(v);

    int mid = (l + p) / 2;
    int ret;
    if(tree[2 * v].mx >= val){
        ret = find(2 * v, l, mid, val);
    }else{
        ret = find(2 * v + 1, mid + 1, p, val);
    }

    tree[v] = merge(tree[2 * v], tree[2 * v + 1]);
    return ret;
}

ll queryMn(int v, int l, int p, int a, int b){
    if(p < a || b < l){
        return INF;
    }

    if(a <= l && p <= b){
        return tree[v].mn;
    }
    Push(v);
    int mid = (l + p) / 2;
    ll ret = min(queryMn(2 * v, l, mid, a, b), queryMn(2 * v + 1, mid + 1, p, a, b));
    tree[v] = merge(tree[2 * v], tree[2 * v + 1]);
    return ret;
}

ll queryMx(int v, int l, int p, int a, int b){
    if(p < a || b < l){
        return 0LL;
    }

    if(a <= l && p <= b){
        return tree[v].mx;
    }
    Push(v);
    int mid = (l + p) / 2;
    ll ret = max(queryMx(2 * v, l, mid, a, b), queryMx(2 * v + 1, mid + 1, p, a, b));
    tree[v] = merge(tree[2 * v], tree[2 * v + 1]);
    return ret;
}

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

    if(a <= l && p <= b){
        tree[v].mx += val;
        tree[v].lazyMx += val;
        return;
    }
    Push(v);
    int mid = (l + p) / 2;
    updMx(2 * v, l, mid, a, b, val);
    updMx(2 * v + 1, mid + 1, p, a, b, val);
    tree[v] = merge(tree[2 * v], tree[2 * v + 1]);
}

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

    if(a <= l && p <= b){
        tree[v].mn += val;
        tree[v].lazyMn += val;
        return;
    }
    Push(v);
    int mid = (l + p) / 2;
    updMn(2 * v, l, mid, a, b, val);
    updMn(2 * v + 1, mid + 1, p, a, b, val);
    tree[v] = merge(tree[2 * v], tree[2 * v + 1]);
}

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

    cin >> n >> m >> q;
    for(int i = 1; i <= q; i++){
        int type;
        cin >> type;
        xd67[i] = type;
        if(type == 1){
            int l, r;
            ll K;
            cin >> l >> r >> C[i] >> K;
            Update curr = Update(type, i, K);
            updates[l].pb(curr);
            curr.mode = -1;
            updates[r + 1].pb(curr);
        }else if(type == 2){
            int l, r;
            ll K;
            cin >> l >> r >> K;
            Update curr = Update(type, i, K);
            updates[l].pb(curr);
            curr.mode = -1;
            updates[r + 1].pb(curr);
        }else{
            int ind;
            ll x;
            cin >> ind >> x;
            queries[ind].pb(mp(i, x));
        }
    }

    for(int i = 1; i <= n; i++){
       // cerr << "===== " << i << '\n';
      //  cerr << "UPD: \n";
        for(auto curr : updates[i]){
           // cerr << curr.mode << ' ' << curr.tm << '\n';
            updMn(1, 0, BASE - 1, curr.tm, q, curr.x * curr.mode * (curr.type == 1 ? 1 : -1));
            if(curr.type == 1){
                updMx(1, 0, BASE - 1, curr.tm, q, curr.x * curr.mode);
            }
        }

      //  cerr << "queries\n";
        for(auto [id, x] : queries[i]){
         //   cerr << queryMn(1, 0, BASE - 1, id, id) << '\n';
         //   cerr << queryMn(1, 0, BASE - 1, 0, id) << '\n';
            ll val = queryMn(1, 0, BASE - 1, id, id) - queryMn(1, 0, BASE - 1, 0, id);
          //  cerr << id << ' ' << x << ' ' << val << '\n';
            if(val < x){
                ans[id] = 0;
                continue;
            }

            val = (ll)-val + queryMx(1, 0, BASE - 1, id, id) + x;
            int wsk = find(1, 0, BASE - 1, val);
            ans[id] = C[wsk];
        }
    }

    for(int i = 1; i <= q; i++){
        if(xd67[i] == 3){
            cout << ans[i] << '\n';
        }
    }

    return 0;
}

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 7 / 7
• Subtask 4: 0 / 21
• Subtask 5: 15 / 15
• Subtask 6: 13 / 13
• Subtask 7: 26 / 26
• Subtask 8: 0 / 11