답안 #684652

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
684652	2023-01-22T09:10:15 Z	pragmatist	Money (IZhO17_money)	C++17	45 / 100	453 ms	262144 KB

money

/*
#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)1e7 + 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) {	
	return get(tree[i], 1, lim, j);
}

void compress() {
	vector<int> v;
	for(int i = 1; i <= n; ++i) {
		v.pb(a[i]);
	}	
	sort(all(v));
	v.erase(unique(all(v)), v.end());
	for(int i = 1; i <= n; ++i) {
		a[i] = lower_bound(all(v), a[i]) - v.begin() + 1;
	}
}

void solve() {
	cin >> n;
	for(int i = 1; i <= n; ++i) {
		cin >> a[i];
	}
	compress();

	mn[0] = inf;
	mx[0] = -inf;
	for(int i = 1; i <= n; ++i) {
		mn[i] = min(mn[i - 1], a[i]);
		mx[i] = max(mx[i - 1], a[i]);
		if(i > 1) p[i] = p[i - 1] + (a[i - 1] <= a[i]);
	}
	lim = mx[n];
	
	tree[0] = ++timer;
	build(1, 1, lim);
	for(int i = 1; i <= n; ++i) {
		tree[i] = ++timer;
		upd(tree[i - 1], tree[i], 1, lim, 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

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct
25	Correct	0 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct

Subtask #3
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct
25	Correct	0 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	0 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	1 ms	340 KB	Output is correct
35	Correct	0 ms	412 KB	Output is correct
36	Correct	0 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct

Subtask #4
0 / 55.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	0 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	0 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	0 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	0 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	0 ms	340 KB	Output is correct
25	Correct	0 ms	340 KB	Output is correct
26	Correct	0 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct
31	Correct	0 ms	340 KB	Output is correct
32	Correct	1 ms	340 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	1 ms	340 KB	Output is correct
35	Correct	0 ms	412 KB	Output is correct
36	Correct	0 ms	340 KB	Output is correct
37	Correct	1 ms	340 KB	Output is correct
38	Correct	1 ms	340 KB	Output is correct
39	Correct	190 ms	30876 KB	Output is correct
40	Correct	453 ms	66372 KB	Output is correct
41	Correct	137 ms	25792 KB	Output is correct
42	Correct	201 ms	30488 KB	Output is correct
43	Correct	142 ms	21888 KB	Output is correct
44	Correct	453 ms	77672 KB	Output is correct
45	Correct	417 ms	73604 KB	Output is correct
46	Correct	445 ms	77732 KB	Output is correct
47	Correct	232 ms	54340 KB	Output is correct
48	Correct	336 ms	62008 KB	Output is correct
49	Runtime error	446 ms	262144 KB	Execution killed with signal 11
50	Halted	0 ms	0 KB	-

답안 #684652

Compilation message

Subtask #1 9.0 / 9.0

Subtask #2 16.0 / 16.0

Subtask #3 20.0 / 20.0

Subtask #4 0 / 55.0

Subtask #1
9.0 / 9.0

Subtask #2
16.0 / 16.0

Subtask #3
20.0 / 20.0

Subtask #4
0 / 55.0