Submission #653211

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
653211	2022-10-26 08:16:20	Stickfish	Group Photo (JOI21_ho_t3)	C++17	100 / 100	855 ms	460 KiB

Main

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#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
struct bitr {
    void resize(int n) {
        t.resize(n);
        sz = n;
    }
    void add(int i, int x) {
        while (i < sz) {
            t[i] += x;
            i |= i + 1;
        }
    }
    int get(int i) {
        int ans = 0;
        while (i > -1) {
            ans += t[i];
            i &= i + 1;
            --i;
        }
        return ans;
    }
    int operator()(int l, int r) {
        return get(r - 1) - get(l - 1);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 32 / 32
• Subtask 4: 20 / 20
• Subtask 5: 36 / 36