oj.uz

Submission #231358

# Submission time Handle Problem Language Result Execution time Memory
231358 2020-05-13T12:33:27 Z maskoff Bigger segments (IZhO19_segments) C++14
37 / 100
 213 ms 102776 KB 
#include <bits/stdc++.h>
#include <ext/rope>
#include <random>
#include <chrono>
#include <ext/pb_ds/assoc_container.hpp>
 
#define file ""
 
#define all(x) x.begin(), x.end()
 
#define sc second
#define fr first
 
#define pb push_back
#define mp make_pair

#define pss pair<line*, line*>
 
using namespace std;
using namespace __gnu_cxx;
 
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
                                    
const ll inf = 1e18;
const int MOD = 1e9 + 7;
                                          
const int dx[] = {+1, -1, 0, 0};
const int dy[] = {0, 0, +1, -1};

int const N = 5e5 + 5;

vector<pll> t(4 * N); 
int L[4 * N], R[4 * N];
int cnt = 1;

void update (ll u, ll l, ll r, ll pos, pll val) {
	if(l > r) return;
 	if (l == r) {
 	 	t[u] = val;
 	 	return;
 	}
 	ll m = l + r >> 1;
 	if (pos <= m) {
 	 	if (!L[u]) L[u] = ++cnt;
 	 	update (L[u], l, m, pos, val);
 	}
 	else {
 	 	if (!R[u]) R[u] = ++cnt;
 	 	update (R[u], m + 1, r, pos, val);
 	}
 	t[u] = max(t[L[u]], t[R[u]]);
}

pll get (ll u, ll ul, ll ur, ll l, ll r) {
 	if (!u || l > r || ul > ur || l > ur || ul > r)
 		return {0, 0};
 	if (l <= ul && ur <= r)
 		return t[u];
 	ll um = ul + ur >> 1;
 	return max(get(L[u], ul, um, l, r), get(R[u], um + 1, ur, l, r));
}

int main() {    
	ios_base :: sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  cin >> n;
  vector<ll> a(n + 1), pref(n + 1);
  for (int i = 1; i <= n; i++)
  	cin >> a[i];
  for (int i = 1; i <= n; i++)
  	pref[i] = pref[i - 1] + a[i];
  vector<ll> dp(n + 1), sum(n + 1);

  for (int i = 1; i <= n; i++) {
  	pii k = get(1, 1, inf, 1, pref[i]);
  	dp[i] = k.fr + 1;
  	sum[i] = pref[i] - pref[k.sc];
  	update (1, 1, inf, sum[i] + pref[i], {dp[i], i});
  }
  cout << dp[n];
	return 0;
}

Compilation message

segments.cpp: In function 'void update(ll, ll, ll, ll, pll)':
segments.cpp:44:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   ll m = l + r >> 1;
          ~~^~~
segments.cpp: In function 'pll get(ll, ll, ll, ll, ll)':
segments.cpp:61:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   ll um = ul + ur >> 1;
           ~~~^~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31616 KB Output is correct
3 Correct 20 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 20 ms 31744 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 19 ms 31616 KB Output is correct
9 Correct 19 ms 31616 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 20 ms 31744 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct
15 Correct 20 ms 31616 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31616 KB Output is correct
3 Correct 20 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 20 ms 31744 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 19 ms 31616 KB Output is correct
9 Correct 19 ms 31616 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 20 ms 31744 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct
15 Correct 20 ms 31616 KB Output is correct
16 Correct 21 ms 31744 KB Output is correct
17 Correct 21 ms 31744 KB Output is correct
18 Correct 21 ms 31872 KB Output is correct
19 Correct 20 ms 31744 KB Output is correct
20 Correct 21 ms 31792 KB Output is correct
21 Correct 21 ms 31744 KB Output is correct
22 Correct 22 ms 31872 KB Output is correct
23 Correct 21 ms 31744 KB Output is correct
24 Correct 20 ms 31744 KB Output is correct
25 Correct 21 ms 31744 KB Output is correct
26 Correct 21 ms 31744 KB Output is correct
27 Correct 21 ms 31744 KB Output is correct
28 Correct 21 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 20 ms 31744 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31616 KB Output is correct
3 Correct 20 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 20 ms 31744 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 19 ms 31616 KB Output is correct
9 Correct 19 ms 31616 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 20 ms 31744 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct
15 Correct 20 ms 31616 KB Output is correct
16 Correct 21 ms 31744 KB Output is correct
17 Correct 21 ms 31744 KB Output is correct
18 Correct 21 ms 31872 KB Output is correct
19 Correct 20 ms 31744 KB Output is correct
20 Correct 21 ms 31792 KB Output is correct
21 Correct 21 ms 31744 KB Output is correct
22 Correct 22 ms 31872 KB Output is correct
23 Correct 21 ms 31744 KB Output is correct
24 Correct 20 ms 31744 KB Output is correct
25 Correct 21 ms 31744 KB Output is correct
26 Correct 21 ms 31744 KB Output is correct
27 Correct 21 ms 31744 KB Output is correct
28 Correct 21 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 20 ms 31744 KB Output is correct
31 Correct 23 ms 32128 KB Output is correct
32 Correct 25 ms 32256 KB Output is correct
33 Correct 25 ms 32384 KB Output is correct
34 Correct 25 ms 32352 KB Output is correct
35 Correct 27 ms 32512 KB Output is correct
36 Correct 25 ms 32512 KB Output is correct
37 Correct 24 ms 32384 KB Output is correct
38 Correct 23 ms 32256 KB Output is correct
39 Correct 23 ms 31872 KB Output is correct
40 Correct 25 ms 32504 KB Output is correct
41 Correct 23 ms 31872 KB Output is correct
42 Correct 24 ms 32000 KB Output is correct
43 Correct 24 ms 31872 KB Output is correct
44 Correct 24 ms 32000 KB Output is correct
45 Correct 24 ms 32000 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31616 KB Output is correct
3 Correct 20 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 20 ms 31744 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 19 ms 31616 KB Output is correct
9 Correct 19 ms 31616 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 20 ms 31744 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct
15 Correct 20 ms 31616 KB Output is correct
16 Correct 21 ms 31744 KB Output is correct
17 Correct 21 ms 31744 KB Output is correct
18 Correct 21 ms 31872 KB Output is correct
19 Correct 20 ms 31744 KB Output is correct
20 Correct 21 ms 31792 KB Output is correct
21 Correct 21 ms 31744 KB Output is correct
22 Correct 22 ms 31872 KB Output is correct
23 Correct 21 ms 31744 KB Output is correct
24 Correct 20 ms 31744 KB Output is correct
25 Correct 21 ms 31744 KB Output is correct
26 Correct 21 ms 31744 KB Output is correct
27 Correct 21 ms 31744 KB Output is correct
28 Correct 21 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 20 ms 31744 KB Output is correct
31 Correct 23 ms 32128 KB Output is correct
32 Correct 25 ms 32256 KB Output is correct
33 Correct 25 ms 32384 KB Output is correct
34 Correct 25 ms 32352 KB Output is correct
35 Correct 27 ms 32512 KB Output is correct
36 Correct 25 ms 32512 KB Output is correct
37 Correct 24 ms 32384 KB Output is correct
38 Correct 23 ms 32256 KB Output is correct
39 Correct 23 ms 31872 KB Output is correct
40 Correct 25 ms 32504 KB Output is correct
41 Correct 23 ms 31872 KB Output is correct
42 Correct 24 ms 32000 KB Output is correct
43 Correct 24 ms 31872 KB Output is correct
44 Correct 24 ms 32000 KB Output is correct
45 Correct 24 ms 32000 KB Output is correct
46 Correct 113 ms 43384 KB Output is correct
47 Correct 146 ms 45252 KB Output is correct
48 Runtime error 213 ms 102776 KB Execution killed with signal 11 (could be triggered by violating memory limits)
49 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 31616 KB Output is correct
2 Correct 19 ms 31616 KB Output is correct
3 Correct 20 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 20 ms 31744 KB Output is correct
6 Correct 19 ms 31616 KB Output is correct
7 Correct 20 ms 31616 KB Output is correct
8 Correct 19 ms 31616 KB Output is correct
9 Correct 19 ms 31616 KB Output is correct
10 Correct 20 ms 31744 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 20 ms 31616 KB Output is correct
13 Correct 20 ms 31744 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct
15 Correct 20 ms 31616 KB Output is correct
16 Correct 21 ms 31744 KB Output is correct
17 Correct 21 ms 31744 KB Output is correct
18 Correct 21 ms 31872 KB Output is correct
19 Correct 20 ms 31744 KB Output is correct
20 Correct 21 ms 31792 KB Output is correct
21 Correct 21 ms 31744 KB Output is correct
22 Correct 22 ms 31872 KB Output is correct
23 Correct 21 ms 31744 KB Output is correct
24 Correct 20 ms 31744 KB Output is correct
25 Correct 21 ms 31744 KB Output is correct
26 Correct 21 ms 31744 KB Output is correct
27 Correct 21 ms 31744 KB Output is correct
28 Correct 21 ms 31744 KB Output is correct
29 Correct 20 ms 31744 KB Output is correct
30 Correct 20 ms 31744 KB Output is correct
31 Correct 23 ms 32128 KB Output is correct
32 Correct 25 ms 32256 KB Output is correct
33 Correct 25 ms 32384 KB Output is correct
34 Correct 25 ms 32352 KB Output is correct
35 Correct 27 ms 32512 KB Output is correct
36 Correct 25 ms 32512 KB Output is correct
37 Correct 24 ms 32384 KB Output is correct
38 Correct 23 ms 32256 KB Output is correct
39 Correct 23 ms 31872 KB Output is correct
40 Correct 25 ms 32504 KB Output is correct
41 Correct 23 ms 31872 KB Output is correct
42 Correct 24 ms 32000 KB Output is correct
43 Correct 24 ms 31872 KB Output is correct
44 Correct 24 ms 32000 KB Output is correct
45 Correct 24 ms 32000 KB Output is correct
46 Correct 113 ms 43384 KB Output is correct
47 Correct 146 ms 45252 KB Output is correct
48 Runtime error 213 ms 102776 KB Execution killed with signal 11 (could be triggered by violating memory limits)
49 Halted 0 ms 0 KB -