Submission #334012

#	Time	Username	Problem	Language	Result	Execution time	Memory
334012		BY_KUTBILIM	Simple game (IZhO17_game)	C++14	100 / 100	608 ms	19496 KiB

game

/** @BY_KUTBILIM **/
#include <bits/stdc++.h>
using namespace std;

#define ff first
#define ss second
#define pb push_back
#define ll long long

const int N = (int)1e6 + 7;
int tree[N * 4], add[N * 4];

void push(int v, int l, int r){
    if(add[v] != 0){
        tree[v] +=  (r - l + 1) * add[v];
        if(l != r){
            add[v*2] += add[v];
            add[v*2+1] += add[v];
        }
        add[v] = 0;
    }
}

int get(int v, int l, int r, int ql, int qr){
    push(v, l, r);
    if(l > qr || r < ql)return 0;
    if(ql <= l and r <= qr)return tree[v];
    int m = (l + r) / 2;
    return get(v*2, l, m, ql, qr) + get(v*2+1, m+1, r, ql, qr);
}

void update(int v, int l, int r, int ql, int qr, int val){
    push(v, l, r);
    if(l > qr || r < ql)return ;
    if(ql <= l and r <= qr){
        tree[v] += (r - l + 1) * val;
        if(l != r){
            add[v*2] += val;
            add[v*2+1] += val;
        }
        return ;
    }
    int m = (l + r) / 2;
    update(v*2, l, m, ql, qr, val);
    update(v*2+1, m+1, r, ql, qr, val);
    tree[v] = tree[v*2] + tree[v*2+1];
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie();

    int n, q;
    cin >> n >> q;
    int a[n];
    for(int i = 0; i < n; i++){
        cin >> a[i];
    }
    for(int i = 0; i < n - 1; i++){
        update(1, 1, N, min(a[i], a[i+1]), max(a[i], a[i+1]), 1);
    }
    while(q--){
        int type;
        cin >> type;
        if(type == 1){
            int i, x;
            cin >> i >> x;
            i--;
            if(i > 0){
                update(1, 1, N, min(a[i], a[i-1]), max(a[i], a[i-1]), -1);
            }
            if(i < n - 1){
                update(1, 1, N, min(a[i], a[i+1]), max(a[i], a[i+1]), -1);
            }
            a[i] = x;
            if(i > 0){
                update(1, 1, N, min(a[i], a[i-1]), max(a[i], a[i-1]), 1);
            }
            if(i < n - 1){
                update(1, 1, N, min(a[i], a[i+1]), max(a[i], a[i+1]), 1);
            }
        } else{
            int h;
            cin >> h;
            cout << get(1, 1, N, h, h) << endl;
        }
    }

    return 0;
}

• Subtask 1: 22 / 22
• Subtask 2: 27 / 27
• Subtask 3: 51 / 51