oj.uz

Submission #684663

# Submission time Handle Problem Language Result Execution time Memory
684663 2023-01-22T09:27:24 Z pragmatist Money (IZhO17_money) C++17
45 / 100
 1294 ms 262144 KB 
/*
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("O3")
#pragma GCC target ("avx2")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")
*/
 
#include<bits/stdc++.h>
 
#define sz(v) (int)v.size()
#define ll long long
#define pb push_back
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define nl "\n"
 
using namespace std;
 
const int N = (int)1e6 + 7; // make sure this is right
const int M = (int)9e7 + 7;
const int inf = (int)2e9 + 7;
const ll INF = (ll)3e18 + 7; 
const ll MOD = (ll)1e9 + 7; // make sure this is right
 
bool bit(int x, int i) {
	return x >> i & 1;
}
 
int sum(int x, int y) {
	x += y;
	if(x >= MOD) x -= MOD;
	return x;
}
 
int n, a[N], dp[N], p[N], mx[N], mn[N];
int timer, tree[N], t[M], L[M], R[M], lim = 1e6;
 
void build(int v, int tl, int tr) {
	if(tl == tr) {
		return;
	}
	int mid = (tl + tr) >> 1;
	L[v] = ++timer;
	build(L[v], tl, mid);
	R[v] = ++timer;
	build(R[v], mid + 1, tr);
}
 
void upd(int prev, int v, int tl, int tr, int id) {
	if(tl == tr) {
		t[v] = t[prev] + 1;
		return;
	}
	int mid = (tl + tr) >> 1;
	if(id <= mid) {
		L[v] = ++timer;
		R[v] = R[prev];
		upd(L[prev], L[v], tl, mid, id); 
	} else {
		R[v] = ++timer;
		L[v] = L[prev];
		upd(R[prev], R[v], mid + 1, tr, id);
	}
	t[v] = t[L[v]] + t[R[v]];
} 
 
int get(int v, int tl, int tr, int id) {
	if(tl == tr) {
		return tl;
	}	
	int mid = (tl + tr) >> 1;
	if(t[L[v]] >= id) return get(L[v], tl, mid, id);
	else return get(R[v], mid + 1, tr, id - t[L[v]]);
}
 
int get(int i, int j) {
	assert(j <= i);	
	return get(tree[i], 1, lim, j);
}
 
void solve() {
	cin >> n;
	tree[0] = ++timer;
	build(1, 1, lim);
	mn[0] = inf;
	mx[0] = -inf;
	for(int i = 1; i <= n; ++i) {
		cin >> a[i];
		mn[i] = min(mn[i - 1], a[i]);
		mx[i] = max(mx[i - 1], a[i]);
		tree[i] = ++timer;
		upd(tree[i - 1], tree[i], 1, lim, a[i]);
		if(i > 1) p[i] = p[i - 1] + (a[i - 1] <= a[i]);
	}
	int j = 1;
	for(int i = 1; i <= n; ++i) {
	    dp[i] = inf;
	    while(j <= i) {
	    	if(p[i] - p[j] != i - j) {
	    	    j++;
	    		continue;
	    	}
        	bool can = (a[j] >= mx[j - 1] || a[i] <= mn[j - 1]);
        	
        	int l = 1, r = j - 2, k = -1;
        	while(l <= r) {
        		int mid = (l + r) >> 1;
        		if(a[i] <= get(j - 1, mid + 1)) {
        			k = mid;
        			r = mid - 1;
        		} else {
        			l = mid + 1;
        		}
        	}
        	if(k != -1) {
        		can |= (a[j] >= get(j - 1, k));
        	}
        	if(can) {
        		dp[i] = min(dp[i], dp[j - 1] + 1);
        		break;
        	} else {
        		j++;
        	}
		}				
	}
	cout << dp[n];
}
 
signed main() {	
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);
	int test = 1;
	//cin >> test;
	for(int i = 1; i <= test; ++i) {
	 	//cout << "Case #" << i << ": ";
		solve();
	}
	return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 15956 KB Output is correct
2 Correct 12 ms 15972 KB Output is correct
3 Correct 15 ms 15956 KB Output is correct
4 Correct 14 ms 15956 KB Output is correct
5 Correct 12 ms 15976 KB Output is correct
6 Correct 11 ms 16072 KB Output is correct
7 Correct 12 ms 15972 KB Output is correct
8 Correct 13 ms 15964 KB Output is correct
9 Correct 14 ms 16004 KB Output is correct
10 Correct 14 ms 16072 KB Output is correct
11 Correct 12 ms 15956 KB Output is correct
12 Correct 11 ms 15956 KB Output is correct
13 Correct 14 ms 16048 KB Output is correct
14 Correct 14 ms 16024 KB Output is correct
15 Correct 14 ms 15960 KB Output is correct
16 Correct 16 ms 16008 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 15956 KB Output is correct
2 Correct 12 ms 15972 KB Output is correct
3 Correct 15 ms 15956 KB Output is correct
4 Correct 14 ms 15956 KB Output is correct
5 Correct 12 ms 15976 KB Output is correct
6 Correct 11 ms 16072 KB Output is correct
7 Correct 12 ms 15972 KB Output is correct
8 Correct 13 ms 15964 KB Output is correct
9 Correct 14 ms 16004 KB Output is correct
10 Correct 14 ms 16072 KB Output is correct
11 Correct 12 ms 15956 KB Output is correct
12 Correct 11 ms 15956 KB Output is correct
13 Correct 14 ms 16048 KB Output is correct
14 Correct 14 ms 16024 KB Output is correct
15 Correct 14 ms 15960 KB Output is correct
16 Correct 16 ms 16008 KB Output is correct
17 Correct 15 ms 15956 KB Output is correct
18 Correct 14 ms 16012 KB Output is correct
19 Correct 14 ms 15956 KB Output is correct
20 Correct 16 ms 16020 KB Output is correct
21 Correct 14 ms 16000 KB Output is correct
22 Correct 12 ms 15976 KB Output is correct
23 Correct 11 ms 15956 KB Output is correct
24 Correct 13 ms 15960 KB Output is correct
25 Correct 14 ms 16016 KB Output is correct
26 Correct 13 ms 15976 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 15956 KB Output is correct
2 Correct 12 ms 15972 KB Output is correct
3 Correct 15 ms 15956 KB Output is correct
4 Correct 14 ms 15956 KB Output is correct
5 Correct 12 ms 15976 KB Output is correct
6 Correct 11 ms 16072 KB Output is correct
7 Correct 12 ms 15972 KB Output is correct
8 Correct 13 ms 15964 KB Output is correct
9 Correct 14 ms 16004 KB Output is correct
10 Correct 14 ms 16072 KB Output is correct
11 Correct 12 ms 15956 KB Output is correct
12 Correct 11 ms 15956 KB Output is correct
13 Correct 14 ms 16048 KB Output is correct
14 Correct 14 ms 16024 KB Output is correct
15 Correct 14 ms 15960 KB Output is correct
16 Correct 16 ms 16008 KB Output is correct
17 Correct 15 ms 15956 KB Output is correct
18 Correct 14 ms 16012 KB Output is correct
19 Correct 14 ms 15956 KB Output is correct
20 Correct 16 ms 16020 KB Output is correct
21 Correct 14 ms 16000 KB Output is correct
22 Correct 12 ms 15976 KB Output is correct
23 Correct 11 ms 15956 KB Output is correct
24 Correct 13 ms 15960 KB Output is correct
25 Correct 14 ms 16016 KB Output is correct
26 Correct 13 ms 15976 KB Output is correct
27 Correct 12 ms 16108 KB Output is correct
28 Correct 11 ms 16084 KB Output is correct
29 Correct 10 ms 16084 KB Output is correct
30 Correct 15 ms 16048 KB Output is correct
31 Correct 12 ms 16056 KB Output is correct
32 Correct 14 ms 16044 KB Output is correct
33 Correct 11 ms 16088 KB Output is correct
34 Correct 12 ms 16084 KB Output is correct
35 Correct 15 ms 16104 KB Output is correct
36 Correct 12 ms 16084 KB Output is correct
37 Correct 17 ms 16052 KB Output is correct
38 Correct 16 ms 16084 KB Output is correct

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 15956 KB Output is correct
2 Correct 12 ms 15972 KB Output is correct
3 Correct 15 ms 15956 KB Output is correct
4 Correct 14 ms 15956 KB Output is correct
5 Correct 12 ms 15976 KB Output is correct
6 Correct 11 ms 16072 KB Output is correct
7 Correct 12 ms 15972 KB Output is correct
8 Correct 13 ms 15964 KB Output is correct
9 Correct 14 ms 16004 KB Output is correct
10 Correct 14 ms 16072 KB Output is correct
11 Correct 12 ms 15956 KB Output is correct
12 Correct 11 ms 15956 KB Output is correct
13 Correct 14 ms 16048 KB Output is correct
14 Correct 14 ms 16024 KB Output is correct
15 Correct 14 ms 15960 KB Output is correct
16 Correct 16 ms 16008 KB Output is correct
17 Correct 15 ms 15956 KB Output is correct
18 Correct 14 ms 16012 KB Output is correct
19 Correct 14 ms 15956 KB Output is correct
20 Correct 16 ms 16020 KB Output is correct
21 Correct 14 ms 16000 KB Output is correct
22 Correct 12 ms 15976 KB Output is correct
23 Correct 11 ms 15956 KB Output is correct
24 Correct 13 ms 15960 KB Output is correct
25 Correct 14 ms 16016 KB Output is correct
26 Correct 13 ms 15976 KB Output is correct
27 Correct 12 ms 16108 KB Output is correct
28 Correct 11 ms 16084 KB Output is correct
29 Correct 10 ms 16084 KB Output is correct
30 Correct 15 ms 16048 KB Output is correct
31 Correct 12 ms 16056 KB Output is correct
32 Correct 14 ms 16044 KB Output is correct
33 Correct 11 ms 16088 KB Output is correct
34 Correct 12 ms 16084 KB Output is correct
35 Correct 15 ms 16104 KB Output is correct
36 Correct 12 ms 16084 KB Output is correct
37 Correct 17 ms 16052 KB Output is correct
38 Correct 16 ms 16084 KB Output is correct
39 Correct 782 ms 146048 KB Output is correct
40 Correct 1294 ms 229128 KB Output is correct
41 Correct 518 ms 120008 KB Output is correct
42 Correct 552 ms 108680 KB Output is correct
43 Correct 448 ms 81620 KB Output is correct
44 Runtime error 315 ms 262144 KB Execution killed with signal 9
45 Halted 0 ms 0 KB -