답안 #59783 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
59783	2018-07-23T06:02:34 Z	강태규(#1723)	Sparklers (JOI17_sparklers)	C++11	50 / 100	181 ms	5076 KB

sparklers

#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, k, t;
int x[100001];
int dp[1001][1001];

const int inf = 1e9 + 7;
llong a[100001];
int check(int s) {
    for (int i = 1; i <= n; ++i) {
        a[i] = 2ll * i * t * s - x[i];
    }
    dp[k][k] = 1;
    for (int l = 1; l < n; ++l) {
        for (int i = 1; i + l <= n; ++i) {
            dp[i][i + l] = 0;
            if (a[i] <= a[i + l]) {
                if (dp[i + 1][i + l] || dp[i][i + l - 1])
                    dp[i][i + l] = 1;
            }
        }
    }
    return dp[1][n];
}

int main() {
    scanf("%d%d%d", &n, &k, &t);
    if (n > 2000) return 0;
    for (int i = 1; i <= n; ++i) {
        scanf("%d", x + i);
    }
    if (x[n] == 0) {
        printf("0\n");
        return 0;
    }
    
    int s = 1, e = inf / t + 1;
    while (s < e) {
        int m = (s + e) / 2;
        if (check(m)) e = m;
        else s = m + 1;
    }
    printf("%d\n", s);
	return 0;
}

Compilation message

sparklers.cpp: In function 'int main()':
sparklers.cpp:45:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &k, &t);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sparklers.cpp:48:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", x + i);
         ~~~~~^~~~~~~~~~~~~

Subtask #1
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	288 KB	Output is correct
2	Correct	2 ms	484 KB	Output is correct
3	Correct	2 ms	484 KB	Output is correct
4	Correct	2 ms	484 KB	Output is correct
5	Correct	3 ms	484 KB	Output is correct
6	Correct	2 ms	524 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	3 ms	596 KB	Output is correct
10	Correct	2 ms	620 KB	Output is correct
11	Correct	3 ms	620 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	3 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	5 ms	620 KB	Output is correct
16	Correct	3 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	3 ms	620 KB	Output is correct
20	Correct	4 ms	644 KB	Output is correct
21	Correct	5 ms	664 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	288 KB	Output is correct
2	Correct	2 ms	484 KB	Output is correct
3	Correct	2 ms	484 KB	Output is correct
4	Correct	2 ms	484 KB	Output is correct
5	Correct	3 ms	484 KB	Output is correct
6	Correct	2 ms	524 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	3 ms	596 KB	Output is correct
10	Correct	2 ms	620 KB	Output is correct
11	Correct	3 ms	620 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	3 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	5 ms	620 KB	Output is correct
16	Correct	3 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	3 ms	620 KB	Output is correct
20	Correct	4 ms	644 KB	Output is correct
21	Correct	5 ms	664 KB	Output is correct
22	Correct	41 ms	3636 KB	Output is correct
23	Correct	18 ms	3636 KB	Output is correct
24	Correct	36 ms	3700 KB	Output is correct
25	Correct	154 ms	4604 KB	Output is correct
26	Correct	150 ms	4616 KB	Output is correct
27	Correct	157 ms	4748 KB	Output is correct
28	Correct	137 ms	4748 KB	Output is correct
29	Correct	170 ms	4776 KB	Output is correct
30	Correct	163 ms	4784 KB	Output is correct
31	Correct	168 ms	4796 KB	Output is correct
32	Correct	145 ms	4832 KB	Output is correct
33	Correct	149 ms	4840 KB	Output is correct
34	Correct	149 ms	4852 KB	Output is correct
35	Correct	181 ms	4864 KB	Output is correct
36	Correct	133 ms	4864 KB	Output is correct
37	Correct	162 ms	5016 KB	Output is correct
38	Correct	145 ms	5064 KB	Output is correct
39	Correct	150 ms	5076 KB	Output is correct
40	Correct	4 ms	5076 KB	Output is correct

Subtask #3
0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	288 KB	Output is correct
2	Correct	2 ms	484 KB	Output is correct
3	Correct	2 ms	484 KB	Output is correct
4	Correct	2 ms	484 KB	Output is correct
5	Correct	3 ms	484 KB	Output is correct
6	Correct	2 ms	524 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	3 ms	596 KB	Output is correct
10	Correct	2 ms	620 KB	Output is correct
11	Correct	3 ms	620 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	3 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	5 ms	620 KB	Output is correct
16	Correct	3 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	3 ms	620 KB	Output is correct
20	Correct	4 ms	644 KB	Output is correct
21	Correct	5 ms	664 KB	Output is correct
22	Correct	41 ms	3636 KB	Output is correct
23	Correct	18 ms	3636 KB	Output is correct
24	Correct	36 ms	3700 KB	Output is correct
25	Correct	154 ms	4604 KB	Output is correct
26	Correct	150 ms	4616 KB	Output is correct
27	Correct	157 ms	4748 KB	Output is correct
28	Correct	137 ms	4748 KB	Output is correct
29	Correct	170 ms	4776 KB	Output is correct
30	Correct	163 ms	4784 KB	Output is correct
31	Correct	168 ms	4796 KB	Output is correct
32	Correct	145 ms	4832 KB	Output is correct
33	Correct	149 ms	4840 KB	Output is correct
34	Correct	149 ms	4852 KB	Output is correct
35	Correct	181 ms	4864 KB	Output is correct
36	Correct	133 ms	4864 KB	Output is correct
37	Correct	162 ms	5016 KB	Output is correct
38	Correct	145 ms	5064 KB	Output is correct
39	Correct	150 ms	5076 KB	Output is correct
40	Correct	4 ms	5076 KB	Output is correct
41	Incorrect	2 ms	5076 KB	Output isn't correct
42	Halted	0 ms	0 KB	-

답안 #59783

Compilation message

Subtask #1 30.0 / 30.0

Subtask #2 20.0 / 20.0

Subtask #3 0 / 50.0

Subtask #1
30.0 / 30.0

Subtask #2
20.0 / 20.0

Subtask #3
0 / 50.0