Submission #436168

# Submission time Handle Problem Language Result Execution time Memory
436168 2021-06-24T09:51:59 Z SlavicG Distributing Candies (IOI21_candies) C++17
38 / 100
1366 ms 159916 KB
#include "bits/stdc++.h"
 
using namespace std;
 
#define ll long long
 
#define       forn(i,n)              for(int i=0;i<n;i++)
#define          all(v)              v.begin(), v.end()
#define         rall(v)              v.rbegin(),v.rend()
 
#define            pb                push_back
#define          sz(a)               (int)a.size()
#define         fastio               ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define      GR(a,n,m)               vector<vector<int>> a(n, vector<int>(m, 0));


struct segment_tree_beats{
    static const int maxn = (1 << 20);
    const ll inf = 1e17;

    int n;

    struct node{
        ll max;
        ll second_max;
        int max_cnt;

        ll min;
        ll second_min;
        int min_cnt;

        ll sum;

        ll lazy_add;
        ll lazy_set;
    } t[maxn];

    void push_set(int i, int l, int r, ll val){
        t[i].min = t[i].max = t[i].lazy_set = val;
        t[i].min_cnt = t[i].max_cnt = r - l + 1;
        t[i].second_max = -inf;
        t[i].second_min = inf;
        t[i].sum = val * (r - l + 1);
        t[i].lazy_add = 0;
    }

    void push_min(int i, int l, int r, ll val){
        if(t[i].min >= val){
            push_set(i, l, r, val);

        }else if(t[i].max > val){
            if(t[i].second_min == t[i].max){
                t[i].second_min = val;
            }

            t[i].sum -= (t[i].max - val) * t[i].max_cnt;
            t[i].max = val;
        }
    }

    void push_max(int i, int l, int r, ll val){
        if(t[i].max <= val){
            push_set(i, l, r, val);

        }else if(t[i].min < val){
            if(t[i].second_max == t[i].min){
                t[i].second_max = val;
            }

            t[i].sum += (val - t[i].min) * t[i].min_cnt;
            t[i].min = val;
        }
    }

    void push_add(int i, int l, int r, ll val){
        if(t[i].min == t[i].max){
            push_set(i, l, r, t[i].max + val);
        }else{

            t[i].max += val, t[i].min += val;

            if(t[i].second_max != -inf)t[i].second_max += val;
            if(t[i].second_min != inf)t[i].second_min += val;

            t[i].sum += val * (r - l + 1);
            t[i].lazy_add += val;
        }
    }

    void update_children(int i, int l, int r){
        if(l == r)return;

        int mid = l + r >> 1;

        if(t[i].lazy_set != -1){
            push_set(2 * i, l, mid, t[i].lazy_set);
            push_set(2 * i + 1, mid + 1, r, t[i].lazy_set);
            t[i].lazy_set = -1;
        }else{
            push_add(2 * i, l, mid, t[i].lazy_add);
            push_add(2 * i + 1, mid + 1, r, t[i].lazy_add);
            t[i].lazy_add = 0;

            push_min(2 * i, l, mid, t[i].max);
            push_min(2 * i + 1, mid + 1, r, t[i].max);

            push_max(2 * i, l, mid, t[i].min);
            push_max(2 * i + 1, mid + 1, r, t[i].min);
        }
    }

    void merge(int i){
        t[i].sum = t[2 * i].sum + t[2 * i + 1].sum;


        t[i].max = max(t[2 * i].max, t[2 * i + 1].max);
        t[i].second_max = max(t[2 * i].second_max, t[2 * i + 1].second_max);
        t[i].max_cnt = 0;

        if(t[2 * i].max == t[i].max){
            t[i].max_cnt += t[2 * i].max_cnt;
        }else{
            t[i].second_max = max(t[i].second_max, t[2 * i].max);
        }

        if(t[2 * i + 1].max == t[i].max){
            t[i].max_cnt += t[2 * i + 1].max_cnt;
        }else{
            t[i].second_max = max(t[i].second_max, t[2 * i + 1].max);
        }


        t[i].min = min(t[2 * i].min, t[2 * i + 1].min);
        t[i].second_min = min(t[2 * i].second_min, t[2 * i + 1].second_min);
        t[i].min_cnt = 0;

        if(t[2 * i].min == t[i].min){
            t[i].min_cnt += t[2 * i].min_cnt;
        }else{
            t[i].second_min = min(t[i].second_min, t[2 * i].min);
        }

        if(t[2 * i + 1].min == t[i].min){
            t[i].min_cnt += t[2 * i + 1].min_cnt;
        }else{
            t[i].second_min = min(t[i].second_min, t[2 * i + 1].min);
        }
    }

    void build(int i, int l, int r, vector<int>& a){
        t[i].lazy_add = 0, t[i].lazy_set = -1;

        if(l == r){
            t[i].max = t[i].min = t[i].sum = a[l];
            t[i].max_cnt = t[i].min_cnt = 1;

            t[i].second_max = -inf;
            t[i].second_min = inf;
        }else{

            int mid = l + r >> 1;

            build(2 * i, l, mid, a);
            build(2 * i + 1, mid + 1, r, a);

            merge(i);
        }
    }

    void update_min(int i, int l, int r, int tl, int tr, int val){

        if(l > tr || r < tl || t[i].max <= val)return;
        
        if(l >= tl && r <= tr && t[i].second_max < val){
            push_min(i, l, r, val);
            return;
        }    

        update_children(i, l, r);

        int mid = l + r >> 1;

        update_min(2 * i, l, mid, tl, tr, val);
        update_min(2 * i + 1, mid + 1, r, tl, tr, val);

        merge(i);
    }

    void update_max(int i, int l, int r, int tl, int tr, int val){

        if(l > tr || r < tl || t[i].min >= val)return;

        if(l >= tl && r <= tr && t[i].second_min > val){
            push_max(i, l, r, val);
            return;
        }

        update_children(i, l, r);

        int mid = l + r >> 1;

        update_max(2 * i, l, mid, tl, tr, val);
        update_max(2 * i + 1, mid + 1, r, tl, tr, val);

        merge(i);
    }

    void update_set(int i, int l, int r, int tl, int tr, int val){
        if(l > tr || r < tl)return;

        if(l >= tl && r <= tr){
            push_set(i, l, r, val);
            return;
        }

        update_children(i, l, r);

        int mid = l + r >> 1;

        update_set(2 * i, l, mid, tl, tr, val);
        update_set(2 * i + 1, mid + 1, r, tl, tr, val);

        merge(i); 
    }

    void update_add(int i, int l, int r, int tl, int tr, int val){
        if(l > tr || r < tl)return;

        if(l >= tl && r <= tr){
            push_add(i, l, r, val);
            return;
        }
        update_children(i, l, r);

        int mid = l + r >> 1;

        update_add(2 * i, l, mid, tl, tr, val);
        update_add(2 * i + 1, mid + 1, r, tl, tr, val);

        merge(i);
    }

    ll query_sum(int i, int l, int r, int tl, int tr){
        if(l > tr || r < tl)return 0;

        if(l >= tl && r <= tr)return t[i].sum;

        update_children(i, l, r);

        int mid = l + r >> 1;

        return  (query_sum(2 * i, l, mid, tl, tr) + query_sum(2 * i + 1, mid + 1, r, tl, tr));
    }

    ll query_min(int i, int l, int r, int tl, int tr){
        if(l > tr || r < tl)return inf;

        if(l >= tl && r <= tr)return t[i].min;

        update_children(i, l, r);

        int mid = l + r >> 1;

        return min(query_min(2 * i, l, mid, tl, tr), query_min(2 * i + 1,mid + 1, r, tl, tr));
    }

    ll query_max(int i, int l, int r, int tl, int tr){
        if(l > tr || r < tl)return -inf;

        if(l >= tl && r <= tr)return t[i].max;

        update_children(i, l, r);

        int mid = l + r >> 1;

        return max(query_max(2 * i, l, mid, tl, tr), query_max(2 * i + 1,mid + 1, r, tl, tr));
    }

    void build(vector<int>& a){
        n = sz(a);
        build(1, 0, n - 1, a);
    }

    void update_add(int l, int r, int val){
        update_add(1, 0, n - 1, l, r, val);
    }

    void update_set(int l, int r, int val){
        update_set(1, 0, n - 1, l, r, val);
    }

    void update_max(int l, int r, int val){
        update_max(1, 0, n - 1, l, r, val);
    }

    void update_min(int l, int r, int val){
        update_min(1, 0, n - 1, l, r, val);
    }
    ll query_sum(int l, int r){
        return query_sum(1, 0, n - 1, l, r);
    }

    ll query_min(int l, int r){
        return query_min(1, 0, n - 1, l, r);
    }

    ll query_max(int l, int r){
        return query_max(1, 0, n - 1, l, r);
    }
};

 
vector<int> distribute_candies(vector<int> c, vector<int> l, vector<int> r, vector<int> v)
{
    int n = sz(c);

    int q = sz(l);

    vector<int> ans(n, 0);
    set<int> s;
    for(auto x: c)s.insert(x);

    bool all_pos = true;
    for(auto x: v)if(x < 0)all_pos = false;
    if(n <= 2000 && q <= 2000){
        for(int j = 0;j < q;j++){
            for(int i = l[j];i <= r[j];i++){
                ans[i] = max(ans[i] + v[j], 0);
                ans[i] = min(ans[i], c[i]);
            }
        }
        return ans;
    }

    if(all_pos){
        vector<ll> p(n + 5, 0);

        for(int j = 0;j < q;j++){
            p[l[j]] += v[j];
            p[r[j] + 1] -= v[j];
        }

        for(int i = 1;i < n;i++)
            p[i] += p[i - 1];

        vector<ll> tmp(n);
        forn(i,n){
            tmp[i] = min((ll)c[i], p[i]);
            ans[i] = tmp[i];
        }
        return ans;
    }
    if(sz(s) == 1){
        vector<int> a(n, 0);
        segment_tree_beats st;
        st.build(a);
        for(int i = 0;i < q;i++){
            st.update_add(l[i], r[i], v[i]);
            st.update_max(l[i],r[i], 0);
            st.update_min(l[i],r[i], c[0]);
        }

        for(int i = 0;i < n;i++){
            ans[i] = st.query_sum(i,i);
        }
        return ans;
    }


}

Compilation message

candies.cpp: In member function 'void segment_tree_beats::update_children(int, int, int)':
candies.cpp:93:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   93 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In member function 'void segment_tree_beats::build(int, int, int, std::vector<int>&)':
candies.cpp:161:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  161 |             int mid = l + r >> 1;
      |                       ~~^~~
candies.cpp: In member function 'void segment_tree_beats::update_min(int, int, int, int, int, int)':
candies.cpp:181:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  181 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In member function 'void segment_tree_beats::update_max(int, int, int, int, int, int)':
candies.cpp:200:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  200 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In member function 'void segment_tree_beats::update_set(int, int, int, int, int, int)':
candies.cpp:218:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  218 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In member function 'void segment_tree_beats::update_add(int, int, int, int, int, int)':
candies.cpp:235:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  235 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In member function 'long long int segment_tree_beats::query_sum(int, int, int, int, int)':
candies.cpp:250:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  250 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In member function 'long long int segment_tree_beats::query_min(int, int, int, int, int)':
candies.cpp:262:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  262 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In member function 'long long int segment_tree_beats::query_max(int, int, int, int, int)':
candies.cpp:274:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  274 |         int mid = l + r >> 1;
      |                   ~~^~~
candies.cpp: In function 'std::vector<int> distribute_candies(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
candies.cpp:320:14: warning: control reaches end of non-void function [-Wreturn-type]
  320 |     set<int> s;
      |              ^
# Verdict Execution time Memory Grader output
1 Correct 44 ms 74052 KB Output is correct
2 Correct 42 ms 74028 KB Output is correct
3 Correct 48 ms 74132 KB Output is correct
4 Correct 43 ms 74096 KB Output is correct
5 Correct 47 ms 74188 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 256 ms 89784 KB Output is correct
2 Correct 210 ms 88492 KB Output is correct
3 Correct 260 ms 88416 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 44 ms 74052 KB Output is correct
2 Correct 304 ms 78896 KB Output is correct
3 Correct 216 ms 77576 KB Output is correct
4 Correct 892 ms 82004 KB Output is correct
5 Correct 1138 ms 82004 KB Output is correct
6 Correct 1366 ms 82004 KB Output is correct
7 Correct 1304 ms 82008 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 43 ms 74128 KB Output is correct
2 Correct 43 ms 74140 KB Output is correct
3 Runtime error 199 ms 159916 KB Execution killed with signal 6
4 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 44 ms 74052 KB Output is correct
2 Correct 42 ms 74028 KB Output is correct
3 Correct 48 ms 74132 KB Output is correct
4 Correct 43 ms 74096 KB Output is correct
5 Correct 47 ms 74188 KB Output is correct
6 Correct 256 ms 89784 KB Output is correct
7 Correct 210 ms 88492 KB Output is correct
8 Correct 260 ms 88416 KB Output is correct
9 Correct 44 ms 74052 KB Output is correct
10 Correct 304 ms 78896 KB Output is correct
11 Correct 216 ms 77576 KB Output is correct
12 Correct 892 ms 82004 KB Output is correct
13 Correct 1138 ms 82004 KB Output is correct
14 Correct 1366 ms 82004 KB Output is correct
15 Correct 1304 ms 82008 KB Output is correct
16 Correct 43 ms 74128 KB Output is correct
17 Correct 43 ms 74140 KB Output is correct
18 Runtime error 199 ms 159916 KB Execution killed with signal 6
19 Halted 0 ms 0 KB -