답안 #334202

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
334202	2020-12-08T15:50:53 Z	BeanZ	Bigger segments (IZhO19_segments)	C++14	37 / 100	90 ms	71020 KB

segments

// I_Love_LPL
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl '\n'
const int N = 3e3 + 5;
long long mod = 1e9 + 7;
const int lim = 5e5;
const int lg = 20;
const int base = 311;
const long double eps = 1e-6;
ll a[N], sum[N], dp[N][N];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    if (fopen("test.inp", "r")){
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }
    ll n;
    cin >> n;
    for (int i = 1; i <= n; i++) cin >> a[i], sum[i] = sum[i - 1] + a[i];
    for (int i = 1; i <= n; i++){
        for (int j = 1; j <= n; j++){
            dp[i][j] = -1e9;
        }
    }
    for (int i = 1; i <= n; i++) dp[1][i] = 1;
    for (int i = 2; i <= n; i++){
        ll best = -1e9;
        ll l = i - 1;
        for (int j = i; j <= n; j++){
            ll tot = sum[j] - sum[i - 1];
            while (l > 0 && (sum[i - 1] - sum[l - 1]) <= tot){
                best = max(best, dp[l][i - 1]);
                l--;
            }
            dp[i][j] = best + 1;
        }
    }
    //cout << dp[1][1] << " " << dp[2][3] << endl;
    ll ans = 0;
    for (int i = 1; i <= n; i++){
        ans = max(ans, dp[i][n]);
    }
    cout << ans;
}
/*
Ans:

Out:
*/

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:17:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   17 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
segments.cpp:18:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   18 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
13.0 / 13.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	492 KB	Output is correct
5	Correct	1 ms	512 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	492 KB	Output is correct
11	Correct	1 ms	512 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct

Subtask #2
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	492 KB	Output is correct
5	Correct	1 ms	512 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	492 KB	Output is correct
11	Correct	1 ms	512 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	3 ms	4332 KB	Output is correct
17	Correct	3 ms	4332 KB	Output is correct
18	Correct	3 ms	4332 KB	Output is correct
19	Correct	3 ms	4332 KB	Output is correct
20	Correct	3 ms	4332 KB	Output is correct
21	Correct	3 ms	4332 KB	Output is correct
22	Correct	3 ms	3180 KB	Output is correct
23	Correct	2 ms	2284 KB	Output is correct
24	Correct	4 ms	4332 KB	Output is correct
25	Correct	3 ms	4332 KB	Output is correct
26	Correct	3 ms	4332 KB	Output is correct
27	Correct	3 ms	4332 KB	Output is correct
28	Correct	3 ms	4332 KB	Output is correct
29	Correct	3 ms	4332 KB	Output is correct
30	Correct	3 ms	4332 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	492 KB	Output is correct
5	Correct	1 ms	512 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	492 KB	Output is correct
11	Correct	1 ms	512 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	3 ms	4332 KB	Output is correct
17	Correct	3 ms	4332 KB	Output is correct
18	Correct	3 ms	4332 KB	Output is correct
19	Correct	3 ms	4332 KB	Output is correct
20	Correct	3 ms	4332 KB	Output is correct
21	Correct	3 ms	4332 KB	Output is correct
22	Correct	3 ms	3180 KB	Output is correct
23	Correct	2 ms	2284 KB	Output is correct
24	Correct	4 ms	4332 KB	Output is correct
25	Correct	3 ms	4332 KB	Output is correct
26	Correct	3 ms	4332 KB	Output is correct
27	Correct	3 ms	4332 KB	Output is correct
28	Correct	3 ms	4332 KB	Output is correct
29	Correct	3 ms	4332 KB	Output is correct
30	Correct	3 ms	4332 KB	Output is correct
31	Correct	63 ms	70892 KB	Output is correct
32	Correct	60 ms	70892 KB	Output is correct
33	Correct	76 ms	70892 KB	Output is correct
34	Correct	52 ms	71020 KB	Output is correct
35	Correct	62 ms	71020 KB	Output is correct
36	Correct	71 ms	71020 KB	Output is correct
37	Correct	53 ms	59244 KB	Output is correct
38	Correct	35 ms	39660 KB	Output is correct
39	Correct	75 ms	70892 KB	Output is correct
40	Correct	63 ms	71020 KB	Output is correct
41	Correct	89 ms	71020 KB	Output is correct
42	Correct	63 ms	70892 KB	Output is correct
43	Correct	90 ms	70892 KB	Output is correct
44	Correct	69 ms	70892 KB	Output is correct
45	Correct	59 ms	70892 KB	Output is correct

Subtask #4
0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	492 KB	Output is correct
5	Correct	1 ms	512 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	492 KB	Output is correct
11	Correct	1 ms	512 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	3 ms	4332 KB	Output is correct
17	Correct	3 ms	4332 KB	Output is correct
18	Correct	3 ms	4332 KB	Output is correct
19	Correct	3 ms	4332 KB	Output is correct
20	Correct	3 ms	4332 KB	Output is correct
21	Correct	3 ms	4332 KB	Output is correct
22	Correct	3 ms	3180 KB	Output is correct
23	Correct	2 ms	2284 KB	Output is correct
24	Correct	4 ms	4332 KB	Output is correct
25	Correct	3 ms	4332 KB	Output is correct
26	Correct	3 ms	4332 KB	Output is correct
27	Correct	3 ms	4332 KB	Output is correct
28	Correct	3 ms	4332 KB	Output is correct
29	Correct	3 ms	4332 KB	Output is correct
30	Correct	3 ms	4332 KB	Output is correct
31	Correct	63 ms	70892 KB	Output is correct
32	Correct	60 ms	70892 KB	Output is correct
33	Correct	76 ms	70892 KB	Output is correct
34	Correct	52 ms	71020 KB	Output is correct
35	Correct	62 ms	71020 KB	Output is correct
36	Correct	71 ms	71020 KB	Output is correct
37	Correct	53 ms	59244 KB	Output is correct
38	Correct	35 ms	39660 KB	Output is correct
39	Correct	75 ms	70892 KB	Output is correct
40	Correct	63 ms	71020 KB	Output is correct
41	Correct	89 ms	71020 KB	Output is correct
42	Correct	63 ms	70892 KB	Output is correct
43	Correct	90 ms	70892 KB	Output is correct
44	Correct	69 ms	70892 KB	Output is correct
45	Correct	59 ms	70892 KB	Output is correct
46	Runtime error	5 ms	748 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
47	Halted	0 ms	0 KB	-

Subtask #5
0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	492 KB	Output is correct
5	Correct	1 ms	512 KB	Output is correct
6	Correct	1 ms	512 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	492 KB	Output is correct
10	Correct	1 ms	492 KB	Output is correct
11	Correct	1 ms	512 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	3 ms	4332 KB	Output is correct
17	Correct	3 ms	4332 KB	Output is correct
18	Correct	3 ms	4332 KB	Output is correct
19	Correct	3 ms	4332 KB	Output is correct
20	Correct	3 ms	4332 KB	Output is correct
21	Correct	3 ms	4332 KB	Output is correct
22	Correct	3 ms	3180 KB	Output is correct
23	Correct	2 ms	2284 KB	Output is correct
24	Correct	4 ms	4332 KB	Output is correct
25	Correct	3 ms	4332 KB	Output is correct
26	Correct	3 ms	4332 KB	Output is correct
27	Correct	3 ms	4332 KB	Output is correct
28	Correct	3 ms	4332 KB	Output is correct
29	Correct	3 ms	4332 KB	Output is correct
30	Correct	3 ms	4332 KB	Output is correct
31	Correct	63 ms	70892 KB	Output is correct
32	Correct	60 ms	70892 KB	Output is correct
33	Correct	76 ms	70892 KB	Output is correct
34	Correct	52 ms	71020 KB	Output is correct
35	Correct	62 ms	71020 KB	Output is correct
36	Correct	71 ms	71020 KB	Output is correct
37	Correct	53 ms	59244 KB	Output is correct
38	Correct	35 ms	39660 KB	Output is correct
39	Correct	75 ms	70892 KB	Output is correct
40	Correct	63 ms	71020 KB	Output is correct
41	Correct	89 ms	71020 KB	Output is correct
42	Correct	63 ms	70892 KB	Output is correct
43	Correct	90 ms	70892 KB	Output is correct
44	Correct	69 ms	70892 KB	Output is correct
45	Correct	59 ms	70892 KB	Output is correct
46	Runtime error	5 ms	748 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
47	Halted	0 ms	0 KB	-

답안 #334202

Compilation message

Subtask #1 13.0 / 13.0

Subtask #2 14.0 / 14.0

Subtask #3 10.0 / 10.0

Subtask #4 0 / 36.0

Subtask #5 0 / 27.0

Subtask #1
13.0 / 13.0

Subtask #2
14.0 / 14.0

Subtask #3
10.0 / 10.0

Subtask #4
0 / 36.0

Subtask #5
0 / 27.0