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Submission #153911

# Submission time Handle Problem Language Result Execution time Memory
153911 2019-09-17T12:38:26 Z mhy908 None (JOI14_ho_t3) C++14
100 / 100
 161 ms 2940 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
int n;
LL arr[200010], ans;
LL f(int stnum, int st, int fin)
{
    if(st==fin)return arr[st]-arr[stnum];
    LL mid=(st+fin)/2+1;
    LL l=arr[mid]-arr[stnum];
    int next=lower_bound(arr+mid+1, arr+stnum+n, l+arr[mid])-arr;
    if(arr[stnum+n]-arr[next]>=l)return f(stnum, mid, fin);
    return f(stnum, st, mid-1);
}
bool ch(int stnum)
{
    LL l=arr[stnum+1]-arr[stnum];
    int next=lower_bound(arr+stnum+2, arr+stnum+n, l+arr[stnum+1])-arr;
    if(arr[stnum+n]-arr[next]>=l)return true;
    return false;
}
int main()
{
    scanf("%d", &n);
    for(int i=1; i<=n; i++){
        LL temp;
        scanf("%lld", &temp);
        arr[i]=arr[i-1]+temp;
    }
    for(int i=1; i<=n; i++)
        arr[i+n]=arr[i]+arr[n];
    for(int i=0; i<n; i++)
        if(ch(i))ans=max(ans, f(i, i+1, i+n-1));
    printf("%lld", ans);
}

Compilation message

2014_ho_t3.cpp: In function 'int main()':
2014_ho_t3.cpp:24:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
2014_ho_t3.cpp:27:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld", &temp);
         ~~~~~^~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 360 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 364 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 360 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 9 ms 504 KB Output is correct
22 Correct 10 ms 504 KB Output is correct
23 Correct 9 ms 508 KB Output is correct
24 Correct 9 ms 504 KB Output is correct
25 Correct 9 ms 504 KB Output is correct
26 Correct 10 ms 504 KB Output is correct
27 Correct 10 ms 504 KB Output is correct
28 Correct 10 ms 504 KB Output is correct
29 Correct 10 ms 504 KB Output is correct
30 Correct 10 ms 504 KB Output is correct
31 Correct 9 ms 504 KB Output is correct
32 Correct 8 ms 504 KB Output is correct
33 Correct 8 ms 504 KB Output is correct
34 Correct 8 ms 504 KB Output is correct
35 Correct 8 ms 504 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 360 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 9 ms 504 KB Output is correct
22 Correct 10 ms 504 KB Output is correct
23 Correct 9 ms 508 KB Output is correct
24 Correct 9 ms 504 KB Output is correct
25 Correct 9 ms 504 KB Output is correct
26 Correct 10 ms 504 KB Output is correct
27 Correct 10 ms 504 KB Output is correct
28 Correct 10 ms 504 KB Output is correct
29 Correct 10 ms 504 KB Output is correct
30 Correct 10 ms 504 KB Output is correct
31 Correct 9 ms 504 KB Output is correct
32 Correct 8 ms 504 KB Output is correct
33 Correct 8 ms 504 KB Output is correct
34 Correct 8 ms 504 KB Output is correct
35 Correct 8 ms 504 KB Output is correct
36 Correct 136 ms 2808 KB Output is correct
37 Correct 141 ms 2936 KB Output is correct
38 Correct 144 ms 2808 KB Output is correct
39 Correct 140 ms 2888 KB Output is correct
40 Correct 135 ms 2808 KB Output is correct
41 Correct 135 ms 2808 KB Output is correct
42 Correct 146 ms 2940 KB Output is correct
43 Correct 145 ms 2808 KB Output is correct
44 Correct 161 ms 2880 KB Output is correct
45 Correct 145 ms 2936 KB Output is correct
46 Correct 125 ms 2012 KB Output is correct
47 Correct 118 ms 2040 KB Output is correct
48 Correct 119 ms 2140 KB Output is correct