제출 #985225

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
985225	2024-05-17 13:13:17	nnin	가로등 (APIO19_street_lamps)	C++14	20 / 100	214 ms	13084 KiB

street_lamps

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#include<bits/stdc++.h>
using namespace std;
int n, q;
int seg[1200005];
void build(int i, int l, int r) {
    seg[i] = 1e9;
    if(l==r) return;
    int m = (l+r)/2;
    build(i*2+1, l, m);
    build(i*2+2, m+1, r);
}
void update(int i, int l, int r, int x, int val) {
    if(l==r) {
        seg[i] = val;
        return;
    }
    int m = (l+r)/2;
    if(x<=m) update(i*2+1, l, m, x, val);
    else update(i*2+2, m+1, r, x, val);
    seg[i] = max(seg[i*2+1], seg[i*2+2]);
}
int query(int i, int l, int r, int wl, int wr) {
    if(wl>r || wr<l) return 0;
    if(wl<=l && wr>=r) return seg[i];
    int m = (l+r)/2;
    return max(query(i*2+1, l, m, wl, wr), query(i*2+2, m+1, r, wl, wr));
}
 
 
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• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 20 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20