Submission #36253

#	Time	Username	Problem	Language	Result	Execution time	Memory
36253		touristk2000	Simple game (IZhO17_game)	C++14	22 / 100	233 ms	6788 KiB

game

#include <bits/stdc++.h>

using namespace std;
const int maxn = 1111111;
int n,m;
int a[111111];
int t[maxn];

int sum(int r){
	int res = 0;
	for (; r >= 0; r = (r & (r+1)) - 1)
		res += t[r];
	return res;
}

void inc(int i, int delta){
	for(; i < maxn; i = (i | (i+1)))
		t[i] += delta;
}


int main(){
    //freopen("game.in","r",stdin);
    //freopen("game.out","w",stdout);
    cin >> n >> m;
    for(int i = 1; i <= n; i ++){
        cin >> a[i];
        if(i > 1){
            inc(min(a[i - 1],a[i]),  1);
            inc(max(a[i - 1],a[i]), -1);
        }
    }
    for(int i = 0; i < m; i ++){
        int t,p;
        cin >> t >> p;
        if(t == 1){
            int v;
            cin >> v;
            if(p > 1){
                inc(min(a[p - 1], a[p]), -1);
                inc(max(a[p - 1], a[p]),  1);
                inc(min(a[p - 1], v),  1);
                inc(max(a[p - 1], v), -1);
            }
            if(p < n){
                inc(min(a[p + 1], a[p]), -1);
                inc(max(a[p + 1], a[p]),  1);
                inc(min(a[p + 1], v),  1);
                inc(max(a[p + 1], v), -1);
            }
            a[p] = v;
        }
        else{
            cout << sum(p) << endl;
        }
    }
    return 0;
}

• Subtask 1: 22 / 22
• Subtask 2: 0 / 27
• Subtask 3: 0 / 51