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Submission #499850

# Submission time Handle Problem Language Result Execution time Memory
499850 2021-12-29T19:35:16 Z reni Bigger segments (IZhO19_segments) C++14
100 / 100
 105 ms 16840 KB 
#include<iostream>
#define endl '\n'
using namespace std;
long long pref[1000000], ans[1000000], sum[1000000];
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    long long n,i,j, ch, pr, br=0, maxr, le, ri, mid;

    cin>>n;

    for(i=1;i<=n;i++)
    {
        cin>>ch;
        pref[i]=pref[i-1]+ch;
        sum[i]=1000000000000;
    }

    ans[1]=1;

    for(i=1;i<=n;i++)
    {

        ans[i]=max(ans[i-1],ans[i]);
        sum[i]=min(sum[i],sum[i-1]+pref[i]-pref[i-1]);

        le=0;ri=n+1;
        int ind=-1;

        while(le<ri-1)
        {
            mid=(le+ri)/2;
            if(sum[i]<=pref[mid]-pref[i]){ri=mid;}
            else {le=mid;}
        }
        if(ri>n)continue;


            if(ans[ri]<=ans[i]+1)
            {
                ans[ri]=ans[i]+1;
                sum[ri]=min(sum[ri],pref[ri]-pref[i]);

            }
        //cout<<ans[i]<<" "<<sum[i]<<endl;

    }
    cout<<ans[n]<<endl;

}

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:31:13: warning: unused variable 'ind' [-Wunused-variable]
   31 |         int ind=-1;
      |             ^~~
segments.cpp:11:19: warning: unused variable 'j' [-Wunused-variable]
   11 |     long long n,i,j, ch, pr, br=0, maxr, le, ri, mid;
      |                   ^
segments.cpp:11:26: warning: unused variable 'pr' [-Wunused-variable]
   11 |     long long n,i,j, ch, pr, br=0, maxr, le, ri, mid;
      |                          ^~
segments.cpp:11:30: warning: unused variable 'br' [-Wunused-variable]
   11 |     long long n,i,j, ch, pr, br=0, maxr, le, ri, mid;
      |                              ^~
segments.cpp:11:36: warning: unused variable 'maxr' [-Wunused-variable]
   11 |     long long n,i,j, ch, pr, br=0, maxr, le, ri, mid;
      |                                    ^~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 236 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 236 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 0 ms 244 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 236 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 0 ms 244 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 2 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 2 ms 332 KB Output is correct
41 Correct 2 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct

Subtask #4
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 236 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 0 ms 244 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 2 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 2 ms 332 KB Output is correct
41 Correct 2 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 10 ms 2636 KB Output is correct
47 Correct 12 ms 3072 KB Output is correct
48 Correct 16 ms 3420 KB Output is correct
49 Correct 21 ms 3564 KB Output is correct
50 Correct 18 ms 3532 KB Output is correct
51 Correct 17 ms 3548 KB Output is correct
52 Correct 8 ms 1868 KB Output is correct
53 Correct 5 ms 1240 KB Output is correct
54 Correct 12 ms 2876 KB Output is correct
55 Correct 16 ms 3640 KB Output is correct
56 Correct 14 ms 3084 KB Output is correct
57 Correct 13 ms 3016 KB Output is correct
58 Correct 13 ms 3104 KB Output is correct
59 Correct 15 ms 3244 KB Output is correct
60 Correct 14 ms 3156 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 236 KB Output is correct
12 Correct 0 ms 332 KB Output is correct
13 Correct 0 ms 332 KB Output is correct
14 Correct 0 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 0 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 332 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 0 ms 332 KB Output is correct
30 Correct 0 ms 244 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 2 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 328 KB Output is correct
39 Correct 1 ms 344 KB Output is correct
40 Correct 2 ms 332 KB Output is correct
41 Correct 2 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 10 ms 2636 KB Output is correct
47 Correct 12 ms 3072 KB Output is correct
48 Correct 16 ms 3420 KB Output is correct
49 Correct 21 ms 3564 KB Output is correct
50 Correct 18 ms 3532 KB Output is correct
51 Correct 17 ms 3548 KB Output is correct
52 Correct 8 ms 1868 KB Output is correct
53 Correct 5 ms 1240 KB Output is correct
54 Correct 12 ms 2876 KB Output is correct
55 Correct 16 ms 3640 KB Output is correct
56 Correct 14 ms 3084 KB Output is correct
57 Correct 13 ms 3016 KB Output is correct
58 Correct 13 ms 3104 KB Output is correct
59 Correct 15 ms 3244 KB Output is correct
60 Correct 14 ms 3156 KB Output is correct
61 Correct 52 ms 13892 KB Output is correct
62 Correct 54 ms 13900 KB Output is correct
63 Correct 61 ms 14332 KB Output is correct
64 Correct 82 ms 16584 KB Output is correct
65 Correct 105 ms 16840 KB Output is correct
66 Correct 81 ms 16836 KB Output is correct
67 Correct 80 ms 13580 KB Output is correct
68 Correct 32 ms 6900 KB Output is correct
69 Correct 56 ms 13072 KB Output is correct
70 Correct 86 ms 16836 KB Output is correct
71 Correct 65 ms 14032 KB Output is correct
72 Correct 66 ms 14388 KB Output is correct
73 Correct 82 ms 14952 KB Output is correct
74 Correct 79 ms 15296 KB Output is correct
75 Correct 79 ms 15364 KB Output is correct