답안 #894402

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
894402	2023-12-28T08:51:35 Z	mychecksedad	Bigger segments (IZhO19_segments)	C++17	100 / 100	95 ms	61640 KB

segments

/* 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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

#	결과	실행 시간	메모리	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

답안 #894402

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 36.0 / 36.0

Subtask #5 27.0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
36.0 / 36.0

Subtask #5
27.0 / 27.0