Submission #1282777

#	Time	Username	Problem	Language	Result	Execution time	Memory
1282777		hiepsimauhong	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++20	100 / 100	998 ms	98752 KiB

sortbooks

#include <bits/stdc++.h>

using namespace std;

#define int long long

#define FOR(I, L, R) for(int I(L) ; I <= (int)R ; ++I)
#define FOD(I, R, L) for(int I(R) ; I >= (int)L ; --I)
#define FOA(I, A) for(auto &I : A)

#define print(A,L,R) FOR(OK, L, R){if(A[OK]<=-oo / 10||A[OK]>=oo)cout<<"- ";else cout<<A[OK]<<' ';}cout<<'\n';
#define prints(A) FOA(OK, A){cout<<OK<<' ';}cout << '\n';
#define printz(A,L,R) FOR(OK, 0, L){FOR(KO, 0, R){if(A[OK][KO]>-oo&&A[OK][KO]<oo)cout<<A[OK][KO]<<' ';else cout << "- ";} cout << '\n';}cout << '\n';

#define fs first
#define sd second
#define se sd.fs
#define th sd.sd
#define ii pair<int,int>
#define iii pair<int, ii>
#define all(A) A.begin(), A.end()
#define quickly cin.tie(0) -> ios_base::sync_with_stdio(0);

const int N = 1e6 + 5;
const int mod = 1e9 + 7;
const int oo = 1e9;

int n, q;
int pos[N], ans[N], a[N];
stack<int> st;
vector<iii> sweep[N];

struct SegmentTree{
        int sg[N << 2];

        void update(int id, int l, int r, int pos, int val){
                if(l > pos || r < pos){
                        return;
                }
                if(l == r){
                        sg[id] = max(sg[id], val);
                        return;
                }

                int mid = (l + r) >> 1;

                update(id << 1, l, mid, pos, val);
                update(id << 1 | 1, mid + 1, r, pos, val);

                sg[id] = max(sg[id << 1], sg[id << 1 | 1]);
        }

        int get(int id, int l, int r, int u, int v){
                if(l > v || r < u){
                        return -oo;
                }
                if(u <= l && r <= v){
                        return sg[id];
                }

                int mid = (l + r) >> 1;

                return max(get(id << 1, l, mid, u, v), get(id << 1 | 1, mid + 1, r, u, v));
        }
} sg;

signed main(){ quickly
        cin >> n >> q;

        FOR(i, 1, n){
                cin >> a[i];

                while(!st.empty() && a[st.top()] <= a[i]){
                        st.pop();
                }

                if(!st.empty()){
                        pos[i] = st.top();
                }

                st.push(i);
        }

        FOR(i, 1, q){
                int l, r, k;
                cin >> l >> r >> k;

                sweep[r].push_back({l, {k, i}});
        }

        FOR(r, 1, n){
                sg.update(1, 1, n, pos[r], a[pos[r]] + a[r]);

                FOA(item, sweep[r]){
                        int l = item.fs, k = item.se, in = item.th;

                        if(sg.get(1, 1, n, l, r) <= k){
                                ans[in] = 1;
                        }
                }
        }

        FOR(i, 1, q){
                cout << ans[i] << '\n';
        }
}

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 13 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 23 / 23