oj.uz

Submission #55139

# Submission time Handle Problem Language Result Execution time Memory
55139 2018-07-06T06:15:42 Z 강태규(#1525) None (JOI14_ho_t3) C++11
100 / 100
 91 ms 3452 KB 
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <unordered_map>
#include <functional>
#include <cstring>
#include <cmath>
#include <ctime>
#include <cstdlib>

using namespace std;
typedef long long llong;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<llong, llong> pll;

int n;
int a[100001];
llong sum[300001];
int check(llong x) {
    for (int i = 0, j = 0, k = 0; i < n; ++i) {
        while (j <= 3 * n && sum[j] - sum[i] < x) ++j;
        while (k <= 3 * n && sum[k] - sum[j] < x) ++k;
        if (sum[k] - sum[j] < sum[j] - sum[i]) continue;
        if (sum[n] - (sum[k] - sum[i]) < sum[j] - sum[i]) continue;
        return 1;
    }
    return 0;
}

int main() {
    scanf("%d", &n);
    for (int i = 1; i <= n; ++i) {
        scanf("%d", a + i);
        sum[i] = sum[i - 1] + a[i];
    }
    for (int i = 1; i <= n; ++i) {
        sum[i + n] = sum[i] + sum[n];
        sum[i + n + n] = sum[i] + sum[n] + sum[n];
    }
    llong s = 0, e = sum[n] / 3;
    while (s < e) {
        llong m = (s + e + 1) / 2;
        if (check(m)) s = m;
        else e = m - 1;
    }
    printf("%lld\n", s);
	return 0;
}

Compilation message

2014_ho_t3.cpp: In function 'int main()':
2014_ho_t3.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
2014_ho_t3.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", a + i);
         ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 320 KB Output is correct
2 Correct 3 ms 484 KB Output is correct
3 Correct 2 ms 508 KB Output is correct
4 Correct 2 ms 584 KB Output is correct
5 Correct 2 ms 584 KB Output is correct
6 Correct 2 ms 584 KB Output is correct
7 Correct 2 ms 584 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 584 KB Output is correct
10 Correct 2 ms 584 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 320 KB Output is correct
2 Correct 3 ms 484 KB Output is correct
3 Correct 2 ms 508 KB Output is correct
4 Correct 2 ms 584 KB Output is correct
5 Correct 2 ms 584 KB Output is correct
6 Correct 2 ms 584 KB Output is correct
7 Correct 2 ms 584 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 584 KB Output is correct
10 Correct 2 ms 584 KB Output is correct
11 Correct 3 ms 584 KB Output is correct
12 Correct 3 ms 584 KB Output is correct
13 Correct 3 ms 584 KB Output is correct
14 Correct 2 ms 584 KB Output is correct
15 Correct 2 ms 584 KB Output is correct
16 Correct 2 ms 704 KB Output is correct
17 Correct 2 ms 704 KB Output is correct
18 Correct 2 ms 704 KB Output is correct
19 Correct 3 ms 704 KB Output is correct
20 Correct 3 ms 704 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 320 KB Output is correct
2 Correct 3 ms 484 KB Output is correct
3 Correct 2 ms 508 KB Output is correct
4 Correct 2 ms 584 KB Output is correct
5 Correct 2 ms 584 KB Output is correct
6 Correct 2 ms 584 KB Output is correct
7 Correct 2 ms 584 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 584 KB Output is correct
10 Correct 2 ms 584 KB Output is correct
11 Correct 3 ms 584 KB Output is correct
12 Correct 3 ms 584 KB Output is correct
13 Correct 3 ms 584 KB Output is correct
14 Correct 2 ms 584 KB Output is correct
15 Correct 2 ms 584 KB Output is correct
16 Correct 2 ms 704 KB Output is correct
17 Correct 2 ms 704 KB Output is correct
18 Correct 2 ms 704 KB Output is correct
19 Correct 3 ms 704 KB Output is correct
20 Correct 3 ms 704 KB Output is correct
21 Correct 5 ms 764 KB Output is correct
22 Correct 4 ms 764 KB Output is correct
23 Correct 7 ms 764 KB Output is correct
24 Correct 5 ms 764 KB Output is correct
25 Correct 7 ms 892 KB Output is correct
26 Correct 7 ms 892 KB Output is correct
27 Correct 8 ms 892 KB Output is correct
28 Correct 7 ms 892 KB Output is correct
29 Correct 7 ms 892 KB Output is correct
30 Correct 8 ms 892 KB Output is correct
31 Correct 4 ms 892 KB Output is correct
32 Correct 4 ms 892 KB Output is correct
33 Correct 5 ms 892 KB Output is correct
34 Correct 4 ms 892 KB Output is correct
35 Correct 4 ms 892 KB Output is correct

Subtask #4
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 320 KB Output is correct
2 Correct 3 ms 484 KB Output is correct
3 Correct 2 ms 508 KB Output is correct
4 Correct 2 ms 584 KB Output is correct
5 Correct 2 ms 584 KB Output is correct
6 Correct 2 ms 584 KB Output is correct
7 Correct 2 ms 584 KB Output is correct
8 Correct 2 ms 584 KB Output is correct
9 Correct 2 ms 584 KB Output is correct
10 Correct 2 ms 584 KB Output is correct
11 Correct 3 ms 584 KB Output is correct
12 Correct 3 ms 584 KB Output is correct
13 Correct 3 ms 584 KB Output is correct
14 Correct 2 ms 584 KB Output is correct
15 Correct 2 ms 584 KB Output is correct
16 Correct 2 ms 704 KB Output is correct
17 Correct 2 ms 704 KB Output is correct
18 Correct 2 ms 704 KB Output is correct
19 Correct 3 ms 704 KB Output is correct
20 Correct 3 ms 704 KB Output is correct
21 Correct 5 ms 764 KB Output is correct
22 Correct 4 ms 764 KB Output is correct
23 Correct 7 ms 764 KB Output is correct
24 Correct 5 ms 764 KB Output is correct
25 Correct 7 ms 892 KB Output is correct
26 Correct 7 ms 892 KB Output is correct
27 Correct 8 ms 892 KB Output is correct
28 Correct 7 ms 892 KB Output is correct
29 Correct 7 ms 892 KB Output is correct
30 Correct 8 ms 892 KB Output is correct
31 Correct 4 ms 892 KB Output is correct
32 Correct 4 ms 892 KB Output is correct
33 Correct 5 ms 892 KB Output is correct
34 Correct 4 ms 892 KB Output is correct
35 Correct 4 ms 892 KB Output is correct
36 Correct 72 ms 3324 KB Output is correct
37 Correct 91 ms 3356 KB Output is correct
38 Correct 73 ms 3356 KB Output is correct
39 Correct 67 ms 3360 KB Output is correct
40 Correct 55 ms 3360 KB Output is correct
41 Correct 64 ms 3452 KB Output is correct
42 Correct 75 ms 3452 KB Output is correct
43 Correct 76 ms 3452 KB Output is correct
44 Correct 76 ms 3452 KB Output is correct
45 Correct 48 ms 3452 KB Output is correct
46 Correct 29 ms 3452 KB Output is correct
47 Correct 26 ms 3452 KB Output is correct
48 Correct 27 ms 3452 KB Output is correct