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Submission #92521

# Submission time Handle Problem Language Result Execution time Memory
92521 2019-01-03T09:57:55 Z Nodir_Bobiev Money (IZhO17_money) C++14
0 / 100
 2 ms 376 KB 
// solved by using fenvick tree 
// + binary search

# include <iostream>

using namespace std;

const int N = 1e6 + 100;

int n, ans = 1;
int a[N];
int cnt[N];

void update(int i)
{
	while(i <= N){
		cnt[i]++;
		i += (i & -i);
	}
}

int get(int i){
	int ret = 0;
	while(i > 0){
		ret += cnt[i];
		i -= (i & -i);
	}
	return ret;
}

int main()
{
	cin >> n;
	
	for (int i = 1; i <= n; i++)
		cin >> a[i];

	update(1e6);
	update(a[1]);
	int x = 1e6;
	
	for (int i = 2; i <= n; i++){
		
		if(a[i] < a[i - 1] || x < a[i]){
			int l = a[i], m, r = 1e6;
			while(r > l){
				m = (r + l) >> 1;
				if(get(a[m]) > a[i])
					r = m;
				else
					l = m + 1;
			}
			x = l;
			++ ans;
		}
		update(a[i]);
	}
	cout << ans;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -