oj.uz

Submission #894402

# Submission time Handle Problem Language Result Execution time Memory
894402 2023-12-28T08:51:35 Z mychecksedad Bigger segments (IZhO19_segments) C++17
100 / 100
 95 ms 61640 KB 
/* Author : Mychecksdead  */
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
const int N = 1e6+100, M = 1e5+10, K = 52, MX = 30;

int n;
ll a[N], dp[N][2], pref[N];
vector<int> dps[N];
void solve(){
  cin >> n;
  for(int i = 1; i <= n; ++i) cin >> a[i];
  dp[0][0] = 0;
  dp[0][1] = 0;
  pref[0] = 0;
  for(int i = 1; i <= n; ++i) pref[i] = pref[i - 1] + a[i], dps[i].pb(0);

  for(int i = 1; i <= n; ++i){
    dp[i][0] = 0;
    dp[i][0] = dp[i - 1][0];
    dp[i][1] = dp[i - 1][1] + a[i];
    for(int j: dps[i]){
      ll s = pref[i] - pref[j];
      if(s >= dp[j][1]){
        if(dp[i][0] < dp[j][0] + 1){
          dp[i][0] = dp[j][0] + 1;
          dp[i][1] = s;
        }else if(dp[i][0] == dp[j][0] + 1) dp[i][1] = min(dp[i][1], s);
      }
    }
    int l = i + 1, r = n, cc = n + 1;
    while(l <= r){
      int m = l+r>>1;
      if(pref[m] - pref[i] >= dp[i][1]){
        cc = m;
        r = m - 1;
      }else l = m + 1;
    }
    dps[cc].pb(i);
  }
  cout << dp[n][0];
}


int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  while(tt--){
    solve();
    en;
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
}

Compilation message

segments.cpp: In function 'void solve()':
segments.cpp:38:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |       int m = l+r>>1;
      |               ~^~
segments.cpp: In function 'int main()':
segments.cpp:52:15: warning: unused variable 'aa' [-Wunused-variable]
   52 |   int tt = 1, aa;
      |               ^~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 29276 KB Output is correct
2 Correct 7 ms 29276 KB Output is correct
3 Correct 7 ms 29348 KB Output is correct
4 Correct 6 ms 29276 KB Output is correct
5 Correct 7 ms 29316 KB Output is correct
6 Correct 6 ms 29528 KB Output is correct
7 Correct 6 ms 29308 KB Output is correct
8 Correct 6 ms 29272 KB Output is correct
9 Correct 6 ms 29276 KB Output is correct
10 Correct 6 ms 29360 KB Output is correct
11 Correct 6 ms 29276 KB Output is correct
12 Correct 6 ms 29276 KB Output is correct
13 Correct 6 ms 29276 KB Output is correct
14 Correct 7 ms 29308 KB Output is correct
15 Correct 6 ms 29276 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 29276 KB Output is correct
2 Correct 7 ms 29276 KB Output is correct
3 Correct 7 ms 29348 KB Output is correct
4 Correct 6 ms 29276 KB Output is correct
5 Correct 7 ms 29316 KB Output is correct
6 Correct 6 ms 29528 KB Output is correct
7 Correct 6 ms 29308 KB Output is correct
8 Correct 6 ms 29272 KB Output is correct
9 Correct 6 ms 29276 KB Output is correct
10 Correct 6 ms 29360 KB Output is correct
11 Correct 6 ms 29276 KB Output is correct
12 Correct 6 ms 29276 KB Output is correct
13 Correct 6 ms 29276 KB Output is correct
14 Correct 7 ms 29308 KB Output is correct
15 Correct 6 ms 29276 KB Output is correct
16 Correct 6 ms 29528 KB Output is correct
17 Correct 6 ms 29276 KB Output is correct
18 Correct 6 ms 29272 KB Output is correct
19 Correct 6 ms 29276 KB Output is correct
20 Correct 6 ms 29276 KB Output is correct
21 Correct 6 ms 29276 KB Output is correct
22 Correct 7 ms 29276 KB Output is correct
23 Correct 6 ms 29276 KB Output is correct
24 Correct 6 ms 29276 KB Output is correct
25 Correct 6 ms 29276 KB Output is correct
26 Correct 6 ms 29284 KB Output is correct
27 Correct 6 ms 29276 KB Output is correct
28 Correct 6 ms 29276 KB Output is correct
29 Correct 6 ms 29276 KB Output is correct
30 Correct 6 ms 29316 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 29276 KB Output is correct
2 Correct 7 ms 29276 KB Output is correct
3 Correct 7 ms 29348 KB Output is correct
4 Correct 6 ms 29276 KB Output is correct
5 Correct 7 ms 29316 KB Output is correct
6 Correct 6 ms 29528 KB Output is correct
7 Correct 6 ms 29308 KB Output is correct
8 Correct 6 ms 29272 KB Output is correct
9 Correct 6 ms 29276 KB Output is correct
10 Correct 6 ms 29360 KB Output is correct
11 Correct 6 ms 29276 KB Output is correct
12 Correct 6 ms 29276 KB Output is correct
13 Correct 6 ms 29276 KB Output is correct
14 Correct 7 ms 29308 KB Output is correct
15 Correct 6 ms 29276 KB Output is correct
16 Correct 6 ms 29528 KB Output is correct
17 Correct 6 ms 29276 KB Output is correct
18 Correct 6 ms 29272 KB Output is correct
19 Correct 6 ms 29276 KB Output is correct
20 Correct 6 ms 29276 KB Output is correct
21 Correct 6 ms 29276 KB Output is correct
22 Correct 7 ms 29276 KB Output is correct
23 Correct 6 ms 29276 KB Output is correct
24 Correct 6 ms 29276 KB Output is correct
25 Correct 6 ms 29276 KB Output is correct
26 Correct 6 ms 29284 KB Output is correct
27 Correct 6 ms 29276 KB Output is correct
28 Correct 6 ms 29276 KB Output is correct
29 Correct 6 ms 29276 KB Output is correct
30 Correct 6 ms 29316 KB Output is correct
31 Correct 8 ms 29272 KB Output is correct
32 Correct 6 ms 29272 KB Output is correct
33 Correct 8 ms 29276 KB Output is correct
34 Correct 6 ms 29300 KB Output is correct
35 Correct 6 ms 29276 KB Output is correct
36 Correct 7 ms 29276 KB Output is correct
37 Correct 6 ms 29288 KB Output is correct
38 Correct 6 ms 29276 KB Output is correct
39 Correct 6 ms 29528 KB Output is correct
40 Correct 6 ms 29276 KB Output is correct
41 Correct 6 ms 29528 KB Output is correct
42 Correct 6 ms 29276 KB Output is correct
43 Correct 6 ms 29276 KB Output is correct
44 Correct 6 ms 29276 KB Output is correct
45 Correct 7 ms 29276 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 29276 KB Output is correct
2 Correct 7 ms 29276 KB Output is correct
3 Correct 7 ms 29348 KB Output is correct
4 Correct 6 ms 29276 KB Output is correct
5 Correct 7 ms 29316 KB Output is correct
6 Correct 6 ms 29528 KB Output is correct
7 Correct 6 ms 29308 KB Output is correct
8 Correct 6 ms 29272 KB Output is correct
9 Correct 6 ms 29276 KB Output is correct
10 Correct 6 ms 29360 KB Output is correct
11 Correct 6 ms 29276 KB Output is correct
12 Correct 6 ms 29276 KB Output is correct
13 Correct 6 ms 29276 KB Output is correct
14 Correct 7 ms 29308 KB Output is correct
15 Correct 6 ms 29276 KB Output is correct
16 Correct 6 ms 29528 KB Output is correct
17 Correct 6 ms 29276 KB Output is correct
18 Correct 6 ms 29272 KB Output is correct
19 Correct 6 ms 29276 KB Output is correct
20 Correct 6 ms 29276 KB Output is correct
21 Correct 6 ms 29276 KB Output is correct
22 Correct 7 ms 29276 KB Output is correct
23 Correct 6 ms 29276 KB Output is correct
24 Correct 6 ms 29276 KB Output is correct
25 Correct 6 ms 29276 KB Output is correct
26 Correct 6 ms 29284 KB Output is correct
27 Correct 6 ms 29276 KB Output is correct
28 Correct 6 ms 29276 KB Output is correct
29 Correct 6 ms 29276 KB Output is correct
30 Correct 6 ms 29316 KB Output is correct
31 Correct 8 ms 29272 KB Output is correct
32 Correct 6 ms 29272 KB Output is correct
33 Correct 8 ms 29276 KB Output is correct
34 Correct 6 ms 29300 KB Output is correct
35 Correct 6 ms 29276 KB Output is correct
36 Correct 7 ms 29276 KB Output is correct
37 Correct 6 ms 29288 KB Output is correct
38 Correct 6 ms 29276 KB Output is correct
39 Correct 6 ms 29528 KB Output is correct
40 Correct 6 ms 29276 KB Output is correct
41 Correct 6 ms 29528 KB Output is correct
42 Correct 6 ms 29276 KB Output is correct
43 Correct 6 ms 29276 KB Output is correct
44 Correct 6 ms 29276 KB Output is correct
45 Correct 7 ms 29276 KB Output is correct
46 Correct 20 ms 35032 KB Output is correct
47 Correct 21 ms 34648 KB Output is correct
48 Correct 23 ms 34652 KB Output is correct
49 Correct 20 ms 34652 KB Output is correct
50 Correct 20 ms 34480 KB Output is correct
51 Correct 24 ms 34640 KB Output is correct
52 Correct 15 ms 30812 KB Output is correct
53 Correct 11 ms 30300 KB Output is correct
54 Correct 21 ms 34756 KB Output is correct
55 Correct 22 ms 34396 KB Output is correct
56 Correct 22 ms 34396 KB Output is correct
57 Correct 18 ms 34648 KB Output is correct
58 Correct 19 ms 34652 KB Output is correct
59 Correct 19 ms 34396 KB Output is correct
60 Correct 19 ms 34396 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 29276 KB Output is correct
2 Correct 7 ms 29276 KB Output is correct
3 Correct 7 ms 29348 KB Output is correct
4 Correct 6 ms 29276 KB Output is correct
5 Correct 7 ms 29316 KB Output is correct
6 Correct 6 ms 29528 KB Output is correct
7 Correct 6 ms 29308 KB Output is correct
8 Correct 6 ms 29272 KB Output is correct
9 Correct 6 ms 29276 KB Output is correct
10 Correct 6 ms 29360 KB Output is correct
11 Correct 6 ms 29276 KB Output is correct
12 Correct 6 ms 29276 KB Output is correct
13 Correct 6 ms 29276 KB Output is correct
14 Correct 7 ms 29308 KB Output is correct
15 Correct 6 ms 29276 KB Output is correct
16 Correct 6 ms 29528 KB Output is correct
17 Correct 6 ms 29276 KB Output is correct
18 Correct 6 ms 29272 KB Output is correct
19 Correct 6 ms 29276 KB Output is correct
20 Correct 6 ms 29276 KB Output is correct
21 Correct 6 ms 29276 KB Output is correct
22 Correct 7 ms 29276 KB Output is correct
23 Correct 6 ms 29276 KB Output is correct
24 Correct 6 ms 29276 KB Output is correct
25 Correct 6 ms 29276 KB Output is correct
26 Correct 6 ms 29284 KB Output is correct
27 Correct 6 ms 29276 KB Output is correct
28 Correct 6 ms 29276 KB Output is correct
29 Correct 6 ms 29276 KB Output is correct
30 Correct 6 ms 29316 KB Output is correct
31 Correct 8 ms 29272 KB Output is correct
32 Correct 6 ms 29272 KB Output is correct
33 Correct 8 ms 29276 KB Output is correct
34 Correct 6 ms 29300 KB Output is correct
35 Correct 6 ms 29276 KB Output is correct
36 Correct 7 ms 29276 KB Output is correct
37 Correct 6 ms 29288 KB Output is correct
38 Correct 6 ms 29276 KB Output is correct
39 Correct 6 ms 29528 KB Output is correct
40 Correct 6 ms 29276 KB Output is correct
41 Correct 6 ms 29528 KB Output is correct
42 Correct 6 ms 29276 KB Output is correct
43 Correct 6 ms 29276 KB Output is correct
44 Correct 6 ms 29276 KB Output is correct
45 Correct 7 ms 29276 KB Output is correct
46 Correct 20 ms 35032 KB Output is correct
47 Correct 21 ms 34648 KB Output is correct
48 Correct 23 ms 34652 KB Output is correct
49 Correct 20 ms 34652 KB Output is correct
50 Correct 20 ms 34480 KB Output is correct
51 Correct 24 ms 34640 KB Output is correct
52 Correct 15 ms 30812 KB Output is correct
53 Correct 11 ms 30300 KB Output is correct
54 Correct 21 ms 34756 KB Output is correct
55 Correct 22 ms 34396 KB Output is correct
56 Correct 22 ms 34396 KB Output is correct
57 Correct 18 ms 34648 KB Output is correct
58 Correct 19 ms 34652 KB Output is correct
59 Correct 19 ms 34396 KB Output is correct
60 Correct 19 ms 34396 KB Output is correct
61 Correct 59 ms 61408 KB Output is correct
62 Correct 76 ms 61640 KB Output is correct
63 Correct 88 ms 60760 KB Output is correct
64 Correct 86 ms 59292 KB Output is correct
65 Correct 82 ms 59316 KB Output is correct
66 Correct 95 ms 59820 KB Output is correct
67 Correct 77 ms 54612 KB Output is correct
68 Correct 41 ms 41820 KB Output is correct
69 Correct 81 ms 60588 KB Output is correct
70 Correct 84 ms 59216 KB Output is correct
71 Correct 66 ms 59216 KB Output is correct
72 Correct 70 ms 60236 KB Output is correct
73 Correct 71 ms 59592 KB Output is correct
74 Correct 71 ms 59220 KB Output is correct
75 Correct 74 ms 59312 KB Output is correct