제출 #633419

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
633419	2022-08-22 12:18:36	Lawliet	송신탑 (IOI22_towers)	C++17	18 / 100	966 ms	8096 KiB

towers

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#include "towers.h"
#include <bits/stdc++.h>
using namespace std;
const int maxl = 20;
const int maxn = 100010;
const int inf = 1000000010;
class SparseTable
{
    public:
        void build(int n, vector<int> v)
        {
            for(int i = 1 ; i <= n ; i++)
                tab[0][i] = v[i];
            for(int k = 1 ; k < maxl ; k++)
                for(int i = 1 ; i + (1 << k) - 1 <= n ; i++)
                    tab[k][i] = max( tab[k - 1][i] , tab[k - 1][i + (1 << (k - 1))] ); 
        }
        int query(int l, int r)
        {
            if( l > r )
                return -inf;
            int t = 31 - __builtin_clz(r - l + 1);
            return max( tab[t][l] , tab[t][r - (1 << t) + 1] );
 
 
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