제출 #372263

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
372263	2021-02-27 11:15:13	gustason	Travels (LMIO17_keliones)	C++11	100 / 100	291 ms	20716 KiB

keliones

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#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define int ll
const int mod = 1e9 + 7;
struct SegmentTree {
    vector<ll> tree;
    int n;
    SegmentTree(vector<int>& a) {
        n = a.size();
        tree.assign(2*n, 0);
        for(int i = n; i < 2*n; i++) {
            tree[i] = a[i-n];
        }
        for(int idx = n-1; idx > 0; idx--) {
            tree[idx] = tree[2*idx] + tree[2*idx+1];
        }
    }
    void update(int idx, ll val) {
        idx += n;
        tree[idx] = val;
        while(idx > 1) {
            idx /= 2;
            tree[idx] = tree[2*idx] + tree[2*idx+1];
            tree[idx] %= mod;
        }
    }
    ll getSum(int L, int R) {
 
 
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• Subtask 4: 55 / 55