oj.uz

Submission #231357

# Submission time Handle Problem Language Result Execution time Memory
231357 2020-05-13T12:32:00 Z maskoff Bigger segments (IZhO19_segments) C++14
37 / 100
 130 ms 54776 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 = 1e6 + 5;

vector<pll> t(N); 
int L[N], R[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 12 ms 16000 KB Output is correct
2 Correct 13 ms 16000 KB Output is correct
3 Correct 12 ms 16000 KB Output is correct
4 Correct 12 ms 16000 KB Output is correct
5 Correct 12 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 13 ms 16000 KB Output is correct
8 Correct 12 ms 16000 KB Output is correct
9 Correct 12 ms 16000 KB Output is correct
10 Correct 12 ms 16000 KB Output is correct
11 Correct 13 ms 16000 KB Output is correct
12 Correct 12 ms 16000 KB Output is correct
13 Correct 12 ms 16128 KB Output is correct
14 Correct 12 ms 16000 KB Output is correct
15 Correct 12 ms 16000 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16000 KB Output is correct
2 Correct 13 ms 16000 KB Output is correct
3 Correct 12 ms 16000 KB Output is correct
4 Correct 12 ms 16000 KB Output is correct
5 Correct 12 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 13 ms 16000 KB Output is correct
8 Correct 12 ms 16000 KB Output is correct
9 Correct 12 ms 16000 KB Output is correct
10 Correct 12 ms 16000 KB Output is correct
11 Correct 13 ms 16000 KB Output is correct
12 Correct 12 ms 16000 KB Output is correct
13 Correct 12 ms 16128 KB Output is correct
14 Correct 12 ms 16000 KB Output is correct
15 Correct 12 ms 16000 KB Output is correct
16 Correct 14 ms 16128 KB Output is correct
17 Correct 13 ms 16128 KB Output is correct
18 Correct 13 ms 16128 KB Output is correct
19 Correct 13 ms 16128 KB Output is correct
20 Correct 15 ms 16128 KB Output is correct
21 Correct 13 ms 16128 KB Output is correct
22 Correct 13 ms 16128 KB Output is correct
23 Correct 12 ms 16128 KB Output is correct
24 Correct 13 ms 16000 KB Output is correct
25 Correct 13 ms 16128 KB Output is correct
26 Correct 12 ms 16000 KB Output is correct
27 Correct 13 ms 16000 KB Output is correct
28 Correct 13 ms 16000 KB Output is correct
29 Correct 13 ms 16128 KB Output is correct
30 Correct 13 ms 16000 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16000 KB Output is correct
2 Correct 13 ms 16000 KB Output is correct
3 Correct 12 ms 16000 KB Output is correct
4 Correct 12 ms 16000 KB Output is correct
5 Correct 12 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 13 ms 16000 KB Output is correct
8 Correct 12 ms 16000 KB Output is correct
9 Correct 12 ms 16000 KB Output is correct
10 Correct 12 ms 16000 KB Output is correct
11 Correct 13 ms 16000 KB Output is correct
12 Correct 12 ms 16000 KB Output is correct
13 Correct 12 ms 16128 KB Output is correct
14 Correct 12 ms 16000 KB Output is correct
15 Correct 12 ms 16000 KB Output is correct
16 Correct 14 ms 16128 KB Output is correct
17 Correct 13 ms 16128 KB Output is correct
18 Correct 13 ms 16128 KB Output is correct
19 Correct 13 ms 16128 KB Output is correct
20 Correct 15 ms 16128 KB Output is correct
21 Correct 13 ms 16128 KB Output is correct
22 Correct 13 ms 16128 KB Output is correct
23 Correct 12 ms 16128 KB Output is correct
24 Correct 13 ms 16000 KB Output is correct
25 Correct 13 ms 16128 KB Output is correct
26 Correct 12 ms 16000 KB Output is correct
27 Correct 13 ms 16000 KB Output is correct
28 Correct 13 ms 16000 KB Output is correct
29 Correct 13 ms 16128 KB Output is correct
30 Correct 13 ms 16000 KB Output is correct
31 Correct 16 ms 16512 KB Output is correct
32 Correct 17 ms 16640 KB Output is correct
33 Correct 16 ms 16768 KB Output is correct
34 Correct 19 ms 16640 KB Output is correct
35 Correct 18 ms 16896 KB Output is correct
36 Correct 17 ms 16896 KB Output is correct
37 Correct 16 ms 16768 KB Output is correct
38 Correct 15 ms 16512 KB Output is correct
39 Correct 15 ms 16256 KB Output is correct
40 Correct 17 ms 16896 KB Output is correct
41 Correct 16 ms 16256 KB Output is correct
42 Correct 16 ms 16384 KB Output is correct
43 Correct 15 ms 16256 KB Output is correct
44 Correct 15 ms 16384 KB Output is correct
45 Correct 16 ms 16384 KB Output is correct

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16000 KB Output is correct
2 Correct 13 ms 16000 KB Output is correct
3 Correct 12 ms 16000 KB Output is correct
4 Correct 12 ms 16000 KB Output is correct
5 Correct 12 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 13 ms 16000 KB Output is correct
8 Correct 12 ms 16000 KB Output is correct
9 Correct 12 ms 16000 KB Output is correct
10 Correct 12 ms 16000 KB Output is correct
11 Correct 13 ms 16000 KB Output is correct
12 Correct 12 ms 16000 KB Output is correct
13 Correct 12 ms 16128 KB Output is correct
14 Correct 12 ms 16000 KB Output is correct
15 Correct 12 ms 16000 KB Output is correct
16 Correct 14 ms 16128 KB Output is correct
17 Correct 13 ms 16128 KB Output is correct
18 Correct 13 ms 16128 KB Output is correct
19 Correct 13 ms 16128 KB Output is correct
20 Correct 15 ms 16128 KB Output is correct
21 Correct 13 ms 16128 KB Output is correct
22 Correct 13 ms 16128 KB Output is correct
23 Correct 12 ms 16128 KB Output is correct
24 Correct 13 ms 16000 KB Output is correct
25 Correct 13 ms 16128 KB Output is correct
26 Correct 12 ms 16000 KB Output is correct
27 Correct 13 ms 16000 KB Output is correct
28 Correct 13 ms 16000 KB Output is correct
29 Correct 13 ms 16128 KB Output is correct
30 Correct 13 ms 16000 KB Output is correct
31 Correct 16 ms 16512 KB Output is correct
32 Correct 17 ms 16640 KB Output is correct
33 Correct 16 ms 16768 KB Output is correct
34 Correct 19 ms 16640 KB Output is correct
35 Correct 18 ms 16896 KB Output is correct
36 Correct 17 ms 16896 KB Output is correct
37 Correct 16 ms 16768 KB Output is correct
38 Correct 15 ms 16512 KB Output is correct
39 Correct 15 ms 16256 KB Output is correct
40 Correct 17 ms 16896 KB Output is correct
41 Correct 16 ms 16256 KB Output is correct
42 Correct 16 ms 16384 KB Output is correct
43 Correct 15 ms 16256 KB Output is correct
44 Correct 15 ms 16384 KB Output is correct
45 Correct 16 ms 16384 KB Output is correct
46 Runtime error 130 ms 54776 KB Execution killed with signal 11 (could be triggered by violating memory limits)
47 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 16000 KB Output is correct
2 Correct 13 ms 16000 KB Output is correct
3 Correct 12 ms 16000 KB Output is correct
4 Correct 12 ms 16000 KB Output is correct
5 Correct 12 ms 16000 KB Output is correct
6 Correct 12 ms 16000 KB Output is correct
7 Correct 13 ms 16000 KB Output is correct
8 Correct 12 ms 16000 KB Output is correct
9 Correct 12 ms 16000 KB Output is correct
10 Correct 12 ms 16000 KB Output is correct
11 Correct 13 ms 16000 KB Output is correct
12 Correct 12 ms 16000 KB Output is correct
13 Correct 12 ms 16128 KB Output is correct
14 Correct 12 ms 16000 KB Output is correct
15 Correct 12 ms 16000 KB Output is correct
16 Correct 14 ms 16128 KB Output is correct
17 Correct 13 ms 16128 KB Output is correct
18 Correct 13 ms 16128 KB Output is correct
19 Correct 13 ms 16128 KB Output is correct
20 Correct 15 ms 16128 KB Output is correct
21 Correct 13 ms 16128 KB Output is correct
22 Correct 13 ms 16128 KB Output is correct
23 Correct 12 ms 16128 KB Output is correct
24 Correct 13 ms 16000 KB Output is correct
25 Correct 13 ms 16128 KB Output is correct
26 Correct 12 ms 16000 KB Output is correct
27 Correct 13 ms 16000 KB Output is correct
28 Correct 13 ms 16000 KB Output is correct
29 Correct 13 ms 16128 KB Output is correct
30 Correct 13 ms 16000 KB Output is correct
31 Correct 16 ms 16512 KB Output is correct
32 Correct 17 ms 16640 KB Output is correct
33 Correct 16 ms 16768 KB Output is correct
34 Correct 19 ms 16640 KB Output is correct
35 Correct 18 ms 16896 KB Output is correct
36 Correct 17 ms 16896 KB Output is correct
37 Correct 16 ms 16768 KB Output is correct
38 Correct 15 ms 16512 KB Output is correct
39 Correct 15 ms 16256 KB Output is correct
40 Correct 17 ms 16896 KB Output is correct
41 Correct 16 ms 16256 KB Output is correct
42 Correct 16 ms 16384 KB Output is correct
43 Correct 15 ms 16256 KB Output is correct
44 Correct 15 ms 16384 KB Output is correct
45 Correct 16 ms 16384 KB Output is correct
46 Runtime error 130 ms 54776 KB Execution killed with signal 11 (could be triggered by violating memory limits)
47 Halted 0 ms 0 KB -