Submission #1133843

#	Time	Username	Problem	Language	Result	Execution time	Memory
1133843		steveonalex	Food Court (JOI21_foodcourt)	C++20	100 / 100	234 ms	42396 KiB

foodcourt

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;

#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()

ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}

ll gcd(ll a, ll b){return __gcd(a, b);}
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ll mask){return __builtin_ctzll(mask);}
int logOf(ll mask){return __lg(mask);}

mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}

template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }

template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }

template <class T>
    void printArr(T& container, string separator = " ", string finish = "\n"){
        for(auto item: container) cout << item << separator;
        cout << finish;
    }


template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }


struct FenwickTree{
    int n;
    vector<ll> a;

    FenwickTree(int _n){
        n = _n;
        a.resize(n+1);
    }

    void update(int i, ll v){
        while(i <= n){
            a[i] += v;
            i += LASTBIT(i);
        }
    }

    ll get(int i){
        ll ans = 0;
        while(i > 0){
            ans += a[i];
            i -= LASTBIT(i);
        }
        return ans;
    }

    ll get(int l, int r){return get(r) - get(l-1);}

    int binary_lift(ll x){
        int p = MASK(logOf(n)), idx =0;
        while(p > 0){
            if (idx + p <= n && x > a[idx + p]){
                idx += p;
                x -= a[idx];
            }
            p >>= 1;
        }
        return idx + 1;
    }
};

const ll INF = 1e18 + 69;

struct SegmentTree{
    ll n, h;
    vector<ll> t, d;
 
    SegmentTree(ll _n){
        n = _n;
        h = logOf(n);
        t.resize(n * 2 + 2), d.resize(n * 2 + 2);
        for(ll i = 1; i <= n * 2 + 1; ++i) t[i] = d[i] = 0;
    }
 
    void apply(ll p, ll value) {
        t[p] += value;
        if (p < n) d[p] += value;
    }
 
    void build(ll p) {
        while (p > 1) p >>= 1, t[p] = min(t[p<<1], t[p<<1|1]) + d[p];
    }
 
    void push(ll p) {
      for (ll s = h; s > 0; --s) {
        ll i = p >> s;
        if (d[i] != 0) {
          apply(i<<1, d[i]);
          apply(i<<1|1, d[i]);
          d[i] = 0;
        }
      }
    }
 
    void update(ll l, ll r, ll value) {
      l += n, r += n+1;
      ll l0 = l, r0 = r;
      for (; l < r; l >>= 1, r >>= 1) {
        if (l&1) apply(l++, value);
        if (r&1) apply(--r, value);
      }
      build(l0);
      build(r0 - 1);
    }
 
    ll get(ll l, ll r) {
      l += n, r += n+1;
      push(l);
      push(r - 1);
      ll res = INF;
      for (; l < r; l >>= 1, r >>= 1) {
        if (l&1) res = min(res, t[l++]);
        if (r&1) res = min(t[--r], res);
      }
      return res;
    }
};


void solve(){
    int n, m, q; cin >> n >> m >> q;
    vector<vector<pair<int,int>>> add_query(n+2);
    vector<vector<pair<int,int>>> del_query(n+2);
    vector<vector<pair<ll,ll>>> query(n+2);

    vector<ll> color(q+2);
    for(ll i = 2; i <= q + 1; ++i){
        int type; cin >> type;
        if (type == 1){
            ll l, r, c, k; cin >> l >> r >> c >> k;
            color[i] = c;
            add_query[l].push_back({k, i});
            add_query[r+1].push_back({-k, i});
        }
        if (type == 2){
            ll l, r, k; cin >> l >> r >> k;
            del_query[l].push_back({k, i});
            del_query[r+1].push_back({-k, i});
        }
        if (type == 3){
            ll a, b; cin >> a >> b;
            query[a].push_back({b, i});
        }

    }

    vector<ll> ans(q+2, -1);

    FenwickTree bit(q+1);
    SegmentTree st(q+1);
    for(int i = 1; i <= n; ++i){
        for(pair<int,int> j: add_query[i]){
            st.update(j.second, q + 1, j.first);
            bit.update(j.second, j.first);
        }
        for(pair<int,int> j: del_query[i]){
            st.update(j.second, q + 1, -j.first);
        }

        for(pair<ll, ll> j: query[i]){
            ll cur = st.get(j.second, j.second) - st.get(1, j.second);
            if (cur < j.first) {
                ans[j.second] = 0;
                continue;
            }
            ll off_set = cur - j.first;
            int idx = bit.binary_lift(bit.get(j.second) - off_set);
            ans[j.second] = color[idx];
        }

    }

    for(int i: ans) if (i != -1) cout << i << " ";
    cout << "\n";
}

int main(void){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    clock_t start = clock();
    
    solve();

    cerr << "Time elapsed: " << clock() - start << "ms!\n";
    return 0;
}

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