Submission #1143762

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1143762	2025-02-01 14:15:48	psm9352	Safety (NOI18_safety)	C++20	7 / 100	25 ms	836 KiB

safety

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#include <iostream>
#include <vector>
using namespace std;
using ll = long long;
struct segtree{
    vector<ll> tree;
    segtree(int n){
        tree.resize(4*n,1e18);
    }
    ll query(int l,int r,int ql,int qr,int pos){
        if (ql > r or qr < l){return 1e18;}
        if (ql<=l and qr >= r){return tree[pos];}
        int mid = l+(r-l)/2;
        return min(query(l,mid,ql,qr,pos*2),query(mid+1,r,ql,qr,pos*2+1));
    }
    void update(int l,int r,int pos,int qpos,ll qval){
        if (l==r){tree[pos]=qval;return;}
        int mid = l+(r-l)/2;
        if (qpos <= mid){update(l,mid,pos*2,qpos,qval);}
        else{update(mid+1,r,pos*2+1,qpos,qval);}
        tree[pos]=min(tree[pos*2],tree[pos*2+1]);
    }
};
int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    int n,h;cin >> n >> h;
    int k =10; // chnage to maxbound of arr[i]
 
 
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