Submission #1306556

#	Time	Username	Problem	Language	Result	Execution time	Memory
1306556		Zbyszek99	Food Court (JOI21_foodcourt)	C++20	100 / 100	594 ms	49692 KiB

foodcourt

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define ull unsigned long long
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vl vector<long long>
#define pb push_back
#define rep(i, b) for(int i = 0; i < (b); ++i)
#define rep2(i,a,b) for(int i = a; i <= (b); ++i)
#define rep3(i,a,b,c) for(int i = a; i <= (b); i+=c)
#define count_bits(x) __builtin_popcountll((x))
#define all(x) (x).begin(),(x).end()
#define siz(x) (int)(x).size()
#define forall(it,x) for(auto& it:(x))
using namespace __gnu_pbds;
using namespace std;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
//mt19937 mt;void random_start(){mt.seed(chrono::time_point_cast<chrono::milliseconds>(chrono::high_resolution_clock::now()).time_since_epoch().count());}
//ll los(ll a, ll b) {return a + (mt() % (b-a+1));}
const int INF = 1e9+50;
const ll INF_L = 1e18+40;
const ll MOD = 1e9+7;

const int tree_siz = 1024*512-1;
ll min_[tree_siz+1];
ll oper[tree_siz+1];

void push(int v)
{
    min_[v*2+1] += oper[v];
    min_[v*2] += oper[v];
    oper[v*2+1] += oper[v];
    oper[v*2] += oper[v];
    oper[v] = 0;
}

void add_seg(int akt, int p1, int p2, int s1, int s2, ll x)
{
    if(p2 < s1 || p1 > s2) return;
    if(p1 >= s1 && p2 <= s2)
    {
        min_[akt] += x;
        oper[akt] += x;
        return;
    }
    push(akt);
    add_seg(akt*2,p1,(p1+p2)/2,s1,s2,x);
    add_seg(akt*2+1,(p1+p2)/2+1,p2,s1,s2,x);
    min_[akt] = min(min_[akt*2],min_[akt*2+1]);
}

ll get_min(int akt, int p1, int p2, int s1, int s2)
{
    if(p2 < s1 || p1 > s2) return 1e18;
    if(p1 >= s1 && p2 <= s2) return min_[akt];
    push(akt);
    return min(get_min(akt*2,p1,(p1+p2)/2,s1,s2),get_min(akt*2+1,(p1+p2)/2+1,p2,s1,s2));
}

ll max_[tree_siz+1];
ll oper2[tree_siz+1];

void push2(int v)
{
    max_[v*2+1] += oper2[v];
    max_[v*2] += oper2[v];
    oper2[v*2+1] += oper2[v];
    oper2[v*2] += oper2[v];
    oper2[v] = 0;
}

void add_seg2(int akt, int p1, int p2, int s1, int s2, ll x)
{
    if(p2 < s1 || p1 > s2) return;
    if(p1 >= s1 && p2 <= s2)
    {
        max_[akt] += x;
        oper2[akt] += x;
        return;
    }
    push2(akt);
    add_seg2(akt*2,p1,(p1+p2)/2,s1,s2,x);
    add_seg2(akt*2+1,(p1+p2)/2+1,p2,s1,s2,x);
    max_[akt] = max(max_[akt*2],max_[akt*2+1]);
}

ll get_max(int akt, int p1, int p2, int s1, int s2)
{
    if(p2 < s1 || p1 > s2) return 0;
    if(p1 >= s1 && p2 <= s2) return max_[akt];
    push2(akt);
    return max(get_max(akt*2,p1,(p1+p2)/2,s1,s2),get_max(akt*2+1,(p1+p2)/2+1,p2,s1,s2));
}

int find_first(int v, int p1, int p2, ll val)
{
    if(p1 == p2) return v-(tree_siz/2+1);
    push2(v);
    if(max_[v*2] < val) return find_first(v*2+1,(p1+p2)/2+1,p2,val);
    return find_first(v*2,p1,(p1+p2)/2,val);
}

struct operS
{  
    ll val;
    int ind,c,type;
};

vector<operS> operations[250003];
operS opers[250003];
vector<pll> queries[250003];
int query_ans[250003];
vi q_list;

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    //random_start();
    int n,m,q;
    cin >> n >> m >> q;
    rep2(qq,1,q)
    {
        int t;
        cin >> t;
        if(t == 1)
        {
            int l,r,c,k;
            cin >> l >> r >> c >> k;
            opers[qq] = {k,qq,c,1};
            operations[l].pb(opers[qq]);
            opers[qq].val *= -1;
            operations[r+1].pb(opers[qq]);
            opers[qq].val *= -1;
        }
        if(t == 2)
        {
            int l,r,k;
            cin >> l >> r >> k;
            opers[qq] = {-k,qq,-1,-1};
            operations[l].pb(opers[qq]);
            opers[qq].val *= -1;
            operations[r+1].pb(opers[qq]);
            opers[qq].val *= -1;
        }
        if(t == 3)
        {
            int v;
            ll val;
            cin >> v >> val;
            queries[v].pb({val,qq});
            q_list.pb(qq);
        }
    }
    rep2(i,1,n)
    {
        forall(it,operations[i]) 
        {
            add_seg(1,0,tree_siz/2,it.ind,q,it.val);
            if(it.type == 1) add_seg2(1,0,tree_siz/2,it.ind,q,it.val);
        }
        forall(it,queries[i])
        {
            ll cur_val = get_min(1,0,tree_siz/2,it.ss,it.ss)-get_min(1,0,tree_siz/2,0,it.ss);
            if(cur_val < it.ff) continue;
            ll query_elm = get_max(1,0,tree_siz/2,it.ss,it.ss)-cur_val+it.ff;
            query_ans[it.ss] = opers[find_first(1,0,tree_siz/2,query_elm)].c;
        }
    }
    forall(it,q_list) cout << query_ans[it] << "\n";
}

• 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