답안 #27851 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
27851	2017-07-14T08:22:32 Z	김현수(#1159)	Sparklers (JOI17_sparklers)	C++14	50 / 100	63 ms	9916 KB

sparklers

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N = 1005, inf = 2e9;
ll n, k, t, a[N], vis[N][N], ts, cs;

void dfs (ll X, ll Y) {
	if(vis[X][Y] == ts || min(inf, cs*t)*(Y-X)*2 < a[Y]-a[X]) return;
	vis[X][Y] = ts;
	if(X != 1) dfs(X-1, Y);
	if(Y != n) dfs(X, Y+1);
}

int main()
{
	scanf("%lld%lld%lld",&n,&k,&t);
	bool f = false;
	for(ll i=1;i<=n;i++) {
		scanf("%lld",&a[i]);
		if(a[i] != a[i-1]) f = true;
	}
	if(!f) {puts("0"); return 0;}
	a[0] = -2*inf; a[n+1] = 2*inf;
	ll S = 1, E = inf;
	while(S<E) {
		ll M = (S+E)/2; cs = M; ts++;
		dfs(k, k);
		vis[1][n] == ts ? E = M : S = M+1;
	}
	printf("%lld\n",S);
}

Compilation message

sparklers.cpp: In function 'int main()':
sparklers.cpp:16:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld",&n,&k,&t);
                                ^
sparklers.cpp:19:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld",&a[i]);
                      ^

Subtask #1
30.0 / 30.0

#	결과	메모리	Grader output
1	Correct	9916 KB	Output is correct
2	Correct	9916 KB	Output is correct
3	Correct	9916 KB	Output is correct
4	Correct	9916 KB	Output is correct
5	Correct	9916 KB	Output is correct
6	Correct	9916 KB	Output is correct
7	Correct	9916 KB	Output is correct
8	Correct	9916 KB	Output is correct
9	Correct	9916 KB	Output is correct
10	Correct	9916 KB	Output is correct
11	Correct	9916 KB	Output is correct
12	Correct	9916 KB	Output is correct
13	Correct	9916 KB	Output is correct
14	Correct	9916 KB	Output is correct
15	Correct	9916 KB	Output is correct
16	Correct	9916 KB	Output is correct
17	Correct	9916 KB	Output is correct
18	Correct	9916 KB	Output is correct
19	Correct	9916 KB	Output is correct
20	Correct	9916 KB	Output is correct
21	Correct	9916 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	9916 KB	Output is correct
2	Correct	0 ms	9916 KB	Output is correct
3	Correct	0 ms	9916 KB	Output is correct
4	Correct	0 ms	9916 KB	Output is correct
5	Correct	0 ms	9916 KB	Output is correct
6	Correct	0 ms	9916 KB	Output is correct
7	Correct	0 ms	9916 KB	Output is correct
8	Correct	0 ms	9916 KB	Output is correct
9	Correct	0 ms	9916 KB	Output is correct
10	Correct	0 ms	9916 KB	Output is correct
11	Correct	0 ms	9916 KB	Output is correct
12	Correct	0 ms	9916 KB	Output is correct
13	Correct	0 ms	9916 KB	Output is correct
14	Correct	0 ms	9916 KB	Output is correct
15	Correct	0 ms	9916 KB	Output is correct
16	Correct	0 ms	9916 KB	Output is correct
17	Correct	0 ms	9916 KB	Output is correct
18	Correct	0 ms	9916 KB	Output is correct
19	Correct	0 ms	9916 KB	Output is correct
20	Correct	0 ms	9916 KB	Output is correct
21	Correct	0 ms	9916 KB	Output is correct
22	Correct	16 ms	9916 KB	Output is correct
23	Correct	6 ms	9916 KB	Output is correct
24	Correct	3 ms	9916 KB	Output is correct
25	Correct	0 ms	9916 KB	Output is correct
26	Correct	16 ms	9916 KB	Output is correct
27	Correct	16 ms	9916 KB	Output is correct
28	Correct	33 ms	9916 KB	Output is correct
29	Correct	29 ms	9916 KB	Output is correct
30	Correct	23 ms	9916 KB	Output is correct
31	Correct	19 ms	9916 KB	Output is correct
32	Correct	29 ms	9916 KB	Output is correct
33	Correct	39 ms	9916 KB	Output is correct
34	Correct	26 ms	9916 KB	Output is correct
35	Correct	63 ms	9916 KB	Output is correct
36	Correct	9 ms	9916 KB	Output is correct
37	Correct	9 ms	9916 KB	Output is correct
38	Correct	33 ms	9916 KB	Output is correct
39	Correct	6 ms	9916 KB	Output is correct
40	Correct	0 ms	9916 KB	Output is correct

Subtask #3
0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	9916 KB	Output is correct
2	Correct	0 ms	9916 KB	Output is correct
3	Correct	0 ms	9916 KB	Output is correct
4	Correct	0 ms	9916 KB	Output is correct
5	Correct	0 ms	9916 KB	Output is correct
6	Correct	0 ms	9916 KB	Output is correct
7	Correct	0 ms	9916 KB	Output is correct
8	Correct	0 ms	9916 KB	Output is correct
9	Correct	0 ms	9916 KB	Output is correct
10	Correct	0 ms	9916 KB	Output is correct
11	Correct	0 ms	9916 KB	Output is correct
12	Correct	0 ms	9916 KB	Output is correct
13	Correct	0 ms	9916 KB	Output is correct
14	Correct	0 ms	9916 KB	Output is correct
15	Correct	0 ms	9916 KB	Output is correct
16	Correct	0 ms	9916 KB	Output is correct
17	Correct	0 ms	9916 KB	Output is correct
18	Correct	0 ms	9916 KB	Output is correct
19	Correct	0 ms	9916 KB	Output is correct
20	Correct	0 ms	9916 KB	Output is correct
21	Correct	0 ms	9916 KB	Output is correct
22	Correct	16 ms	9916 KB	Output is correct
23	Correct	6 ms	9916 KB	Output is correct
24	Correct	3 ms	9916 KB	Output is correct
25	Correct	0 ms	9916 KB	Output is correct
26	Correct	16 ms	9916 KB	Output is correct
27	Correct	16 ms	9916 KB	Output is correct
28	Correct	33 ms	9916 KB	Output is correct
29	Correct	29 ms	9916 KB	Output is correct
30	Correct	23 ms	9916 KB	Output is correct
31	Correct	19 ms	9916 KB	Output is correct
32	Correct	29 ms	9916 KB	Output is correct
33	Correct	39 ms	9916 KB	Output is correct
34	Correct	26 ms	9916 KB	Output is correct
35	Correct	63 ms	9916 KB	Output is correct
36	Correct	9 ms	9916 KB	Output is correct
37	Correct	9 ms	9916 KB	Output is correct
38	Correct	33 ms	9916 KB	Output is correct
39	Correct	6 ms	9916 KB	Output is correct
40	Correct	0 ms	9916 KB	Output is correct
41	Runtime error	0 ms	9916 KB	Execution killed because of forbidden syscall futex (202)
42	Halted	0 ms	0 KB	-

답안 #27851

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