제출 #114291

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
114291	2019-05-31 17:29:30	popovicirobert	Sails (IOI07_sails)	C++14	100 / 100	86 ms	2816 KiB

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#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
// 217
// 44
using namespace std;
const int MAXH = (int) 1e5;
struct Fenwick {
    vector <int> aib;
    int n;
    inline void init(int _n) {
        n = _n;
        aib.resize(n + 1, 0);
    }
    inline void update(int pos, int val) {
        for(int i = pos; i <= n; i += lsb(i)) {
            aib[i] += val;
        }
    }
    inline int query(int pos) {
        int ans = 0;
        for(int i = pos; i > 0; i -= lsb(i)) {
            ans += aib[i];
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
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• Subtask 11: 10 / 10