답안 #55145 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
55145	2018-07-06T06:25:28 Z	김세빈(#1527)	도넛 (JOI14_ho_t3)	C++11	100 / 100	133 ms	2304 KB

2014_ho_t3

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

ll A[202020];
ll n, sum;

bool check(ll k)
{
	ll i, j, l, s1, s2;
	s1 = s2 = 0;
	
	for(i=j=l=1;i<=n;i++){
		for(;j<n+i && s1<k;j++) s1 += A[j], s2 -= A[j];
		for(;l<n+i && s2<k;l++) s2 += A[l];
		if(s2 >= s1 && sum - s2 - s1 >= s1) return 1;
		s1 -= A[i];
	}
	
	return 0;
}

int main()
{
	ll i, s, e, mid;
	
	scanf("%lld", &n);
	
	for(i=1;i<=n;i++){
		scanf("%lld", A+i);
		sum += A[i];
		A[n+i] = A[i];
	}
	
	for(s=0,e=1e18;s<=e;){
		mid = s+e>>1;
		if(check(mid)) s = mid+1;
		else e = mid-1;
	}
	
	printf("%lld\n", s-1);
	
	return 0;
}

Compilation message

2014_ho_t3.cpp: In function 'int main()':
2014_ho_t3.cpp:38:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   mid = s+e>>1;
         ~^~
2014_ho_t3.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld", &n);
  ~~~~~^~~~~~~~~~~~
2014_ho_t3.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", A+i);
   ~~~~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	2 ms	464 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	616 KB	Output is correct
7	Correct	2 ms	616 KB	Output is correct
8	Correct	2 ms	616 KB	Output is correct
9	Correct	2 ms	616 KB	Output is correct
10	Correct	2 ms	616 KB	Output is correct

Subtask #2
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	2 ms	464 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	616 KB	Output is correct
7	Correct	2 ms	616 KB	Output is correct
8	Correct	2 ms	616 KB	Output is correct
9	Correct	2 ms	616 KB	Output is correct
10	Correct	2 ms	616 KB	Output is correct
11	Correct	3 ms	616 KB	Output is correct
12	Correct	2 ms	616 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	636 KB	Output is correct
15	Correct	3 ms	636 KB	Output is correct
16	Correct	2 ms	636 KB	Output is correct
17	Correct	3 ms	636 KB	Output is correct
18	Correct	3 ms	636 KB	Output is correct
19	Correct	3 ms	636 KB	Output is correct
20	Correct	3 ms	636 KB	Output is correct

Subtask #3
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	2 ms	464 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	616 KB	Output is correct
7	Correct	2 ms	616 KB	Output is correct
8	Correct	2 ms	616 KB	Output is correct
9	Correct	2 ms	616 KB	Output is correct
10	Correct	2 ms	616 KB	Output is correct
11	Correct	3 ms	616 KB	Output is correct
12	Correct	2 ms	616 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	636 KB	Output is correct
15	Correct	3 ms	636 KB	Output is correct
16	Correct	2 ms	636 KB	Output is correct
17	Correct	3 ms	636 KB	Output is correct
18	Correct	3 ms	636 KB	Output is correct
19	Correct	3 ms	636 KB	Output is correct
20	Correct	3 ms	636 KB	Output is correct
21	Correct	9 ms	636 KB	Output is correct
22	Correct	8 ms	636 KB	Output is correct
23	Correct	9 ms	636 KB	Output is correct
24	Correct	8 ms	636 KB	Output is correct
25	Correct	9 ms	644 KB	Output is correct
26	Correct	7 ms	644 KB	Output is correct
27	Correct	9 ms	644 KB	Output is correct
28	Correct	11 ms	644 KB	Output is correct
29	Correct	8 ms	644 KB	Output is correct
30	Correct	9 ms	644 KB	Output is correct
31	Correct	6 ms	644 KB	Output is correct
32	Correct	9 ms	644 KB	Output is correct
33	Correct	7 ms	644 KB	Output is correct
34	Correct	7 ms	764 KB	Output is correct
35	Correct	7 ms	764 KB	Output is correct

Subtask #4
50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	376 KB	Output is correct
2	Correct	2 ms	464 KB	Output is correct
3	Correct	2 ms	464 KB	Output is correct
4	Correct	2 ms	464 KB	Output is correct
5	Correct	2 ms	464 KB	Output is correct
6	Correct	2 ms	616 KB	Output is correct
7	Correct	2 ms	616 KB	Output is correct
8	Correct	2 ms	616 KB	Output is correct
9	Correct	2 ms	616 KB	Output is correct
10	Correct	2 ms	616 KB	Output is correct
11	Correct	3 ms	616 KB	Output is correct
12	Correct	2 ms	616 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	636 KB	Output is correct
15	Correct	3 ms	636 KB	Output is correct
16	Correct	2 ms	636 KB	Output is correct
17	Correct	3 ms	636 KB	Output is correct
18	Correct	3 ms	636 KB	Output is correct
19	Correct	3 ms	636 KB	Output is correct
20	Correct	3 ms	636 KB	Output is correct
21	Correct	9 ms	636 KB	Output is correct
22	Correct	8 ms	636 KB	Output is correct
23	Correct	9 ms	636 KB	Output is correct
24	Correct	8 ms	636 KB	Output is correct
25	Correct	9 ms	644 KB	Output is correct
26	Correct	7 ms	644 KB	Output is correct
27	Correct	9 ms	644 KB	Output is correct
28	Correct	11 ms	644 KB	Output is correct
29	Correct	8 ms	644 KB	Output is correct
30	Correct	9 ms	644 KB	Output is correct
31	Correct	6 ms	644 KB	Output is correct
32	Correct	9 ms	644 KB	Output is correct
33	Correct	7 ms	644 KB	Output is correct
34	Correct	7 ms	764 KB	Output is correct
35	Correct	7 ms	764 KB	Output is correct
36	Correct	104 ms	2172 KB	Output is correct
37	Correct	111 ms	2172 KB	Output is correct
38	Correct	91 ms	2172 KB	Output is correct
39	Correct	111 ms	2176 KB	Output is correct
40	Correct	102 ms	2208 KB	Output is correct
41	Correct	113 ms	2300 KB	Output is correct
42	Correct	126 ms	2304 KB	Output is correct
43	Correct	101 ms	2304 KB	Output is correct
44	Correct	100 ms	2304 KB	Output is correct
45	Correct	133 ms	2304 KB	Output is correct
46	Correct	39 ms	2304 KB	Output is correct
47	Correct	41 ms	2304 KB	Output is correct
48	Correct	39 ms	2304 KB	Output is correct

답안 #55145

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 15.0 / 15.0

Subtask #3 30.0 / 30.0

Subtask #4 50.0 / 50.0

Subtask #1
5.0 / 5.0

Subtask #2
15.0 / 15.0

Subtask #3
30.0 / 30.0

Subtask #4
50.0 / 50.0