답안 #85517 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
85517	2018-11-20T16:34:18 Z	nikolapesic2802	Sparklers (JOI17_sparklers)	C++14	100 / 100	51 ms	1904 KB

sparklers

#include <bits/stdc++.h>

#define ll long long

using namespace std;

int main()
{
    int n,k,t;
    scanf("%i %i %i",&n,&k,&t);
    vector<int> arr(n+1);
    for(int i=1;i<=n;i++)
    {
        scanf("%i",&arr[i]);
    }
    int le=0,ri=5e8;
    while(le<ri)
    {
        int m=(le+ri)>>1;
        vector<ll> X(n+1);
        for(int i=1;i<=n;i++)
        {
            X[i]=arr[i]-(ll)2*m*t*(i-1);
        }
        int l=k,r=k;
        ll minn=X[k],maxx=X[k];
        bool ok=1;
        while(ok)
        {
            ok=0;
            while(l>1&&X[l-1]>=minn)
            {
                ok=1;
                l--;
                maxx=max(maxx,X[l]);
            }
            while(r<n&&X[r+1]<=maxx)
            {
                ok=1;
                r++;
                minn=min(minn,X[r]);
            }
        }
        if(l==1&&r==n)
        {
            if(X[l]<X[r])
            {
                le=m+1;
                continue;
            }
            maxx=X[l];
            minn=X[r];
            ok=1;
            while(ok)
            {
                ok=0;
                while(l<k&&X[l+1]>=minn)
                {
                    ok=1;
                    l++;
                    maxx=max(maxx,X[l]);
                }
                while(r>k&&X[r-1]<=maxx)
                {
                    ok=1;
                    r--;
                    minn=min(minn,X[r]);
                }
            }
            if(r==k&&l==k)
            {
                ri=m;
            }
            else
            {
                le=m+1;
            }
        }
        else
        {
            le=m+1;
        }
    }
    printf("%i\n",le);
    return 0;
}

Compilation message

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

Subtask #1
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	372 KB	Output is correct
3	Correct	2 ms	392 KB	Output is correct
4	Correct	2 ms	408 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	468 KB	Output is correct
8	Correct	2 ms	552 KB	Output is correct
9	Correct	2 ms	552 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	2 ms	700 KB	Output is correct
12	Correct	2 ms	700 KB	Output is correct
13	Correct	2 ms	700 KB	Output is correct
14	Correct	2 ms	700 KB	Output is correct
15	Correct	2 ms	700 KB	Output is correct
16	Correct	2 ms	700 KB	Output is correct
17	Correct	2 ms	700 KB	Output is correct
18	Correct	2 ms	700 KB	Output is correct
19	Correct	2 ms	700 KB	Output is correct
20	Correct	2 ms	700 KB	Output is correct
21	Correct	2 ms	700 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	372 KB	Output is correct
3	Correct	2 ms	392 KB	Output is correct
4	Correct	2 ms	408 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	468 KB	Output is correct
8	Correct	2 ms	552 KB	Output is correct
9	Correct	2 ms	552 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	2 ms	700 KB	Output is correct
12	Correct	2 ms	700 KB	Output is correct
13	Correct	2 ms	700 KB	Output is correct
14	Correct	2 ms	700 KB	Output is correct
15	Correct	2 ms	700 KB	Output is correct
16	Correct	2 ms	700 KB	Output is correct
17	Correct	2 ms	700 KB	Output is correct
18	Correct	2 ms	700 KB	Output is correct
19	Correct	2 ms	700 KB	Output is correct
20	Correct	2 ms	700 KB	Output is correct
21	Correct	2 ms	700 KB	Output is correct
22	Correct	2 ms	700 KB	Output is correct
23	Correct	2 ms	700 KB	Output is correct
24	Correct	2 ms	700 KB	Output is correct
25	Correct	2 ms	700 KB	Output is correct
26	Correct	2 ms	700 KB	Output is correct
27	Correct	3 ms	700 KB	Output is correct
28	Correct	2 ms	700 KB	Output is correct
29	Correct	2 ms	700 KB	Output is correct
30	Correct	2 ms	700 KB	Output is correct
31	Correct	2 ms	700 KB	Output is correct
32	Correct	2 ms	700 KB	Output is correct
33	Correct	2 ms	700 KB	Output is correct
34	Correct	2 ms	700 KB	Output is correct
35	Correct	3 ms	700 KB	Output is correct
36	Correct	2 ms	700 KB	Output is correct
37	Correct	2 ms	700 KB	Output is correct
38	Correct	2 ms	700 KB	Output is correct
39	Correct	2 ms	700 KB	Output is correct
40	Correct	3 ms	700 KB	Output is correct

Subtask #3
50.0 / 50.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	372 KB	Output is correct
3	Correct	2 ms	392 KB	Output is correct
4	Correct	2 ms	408 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	468 KB	Output is correct
8	Correct	2 ms	552 KB	Output is correct
9	Correct	2 ms	552 KB	Output is correct
10	Correct	2 ms	560 KB	Output is correct
11	Correct	2 ms	700 KB	Output is correct
12	Correct	2 ms	700 KB	Output is correct
13	Correct	2 ms	700 KB	Output is correct
14	Correct	2 ms	700 KB	Output is correct
15	Correct	2 ms	700 KB	Output is correct
16	Correct	2 ms	700 KB	Output is correct
17	Correct	2 ms	700 KB	Output is correct
18	Correct	2 ms	700 KB	Output is correct
19	Correct	2 ms	700 KB	Output is correct
20	Correct	2 ms	700 KB	Output is correct
21	Correct	2 ms	700 KB	Output is correct
22	Correct	2 ms	700 KB	Output is correct
23	Correct	2 ms	700 KB	Output is correct
24	Correct	2 ms	700 KB	Output is correct
25	Correct	2 ms	700 KB	Output is correct
26	Correct	2 ms	700 KB	Output is correct
27	Correct	3 ms	700 KB	Output is correct
28	Correct	2 ms	700 KB	Output is correct
29	Correct	2 ms	700 KB	Output is correct
30	Correct	2 ms	700 KB	Output is correct
31	Correct	2 ms	700 KB	Output is correct
32	Correct	2 ms	700 KB	Output is correct
33	Correct	2 ms	700 KB	Output is correct
34	Correct	2 ms	700 KB	Output is correct
35	Correct	3 ms	700 KB	Output is correct
36	Correct	2 ms	700 KB	Output is correct
37	Correct	2 ms	700 KB	Output is correct
38	Correct	2 ms	700 KB	Output is correct
39	Correct	2 ms	700 KB	Output is correct
40	Correct	3 ms	700 KB	Output is correct
41	Correct	18 ms	1248 KB	Output is correct
42	Correct	3 ms	1248 KB	Output is correct
43	Correct	7 ms	1248 KB	Output is correct
44	Correct	29 ms	1772 KB	Output is correct
45	Correct	28 ms	1904 KB	Output is correct
46	Correct	30 ms	1904 KB	Output is correct
47	Correct	32 ms	1904 KB	Output is correct
48	Correct	30 ms	1904 KB	Output is correct
49	Correct	50 ms	1904 KB	Output is correct
50	Correct	28 ms	1904 KB	Output is correct
51	Correct	33 ms	1904 KB	Output is correct
52	Correct	27 ms	1904 KB	Output is correct
53	Correct	29 ms	1904 KB	Output is correct
54	Correct	40 ms	1904 KB	Output is correct
55	Correct	26 ms	1904 KB	Output is correct
56	Correct	27 ms	1904 KB	Output is correct
57	Correct	29 ms	1904 KB	Output is correct
58	Correct	51 ms	1904 KB	Output is correct
59	Correct	21 ms	1904 KB	Output is correct
60	Correct	29 ms	1904 KB	Output is correct
61	Correct	28 ms	1904 KB	Output is correct
62	Correct	28 ms	1904 KB	Output is correct
63	Correct	37 ms	1904 KB	Output is correct
64	Correct	31 ms	1904 KB	Output is correct
65	Correct	29 ms	1904 KB	Output is correct
66	Correct	28 ms	1904 KB	Output is correct
67	Correct	29 ms	1904 KB	Output is correct
68	Correct	26 ms	1904 KB	Output is correct
69	Correct	31 ms	1904 KB	Output is correct

답안 #85517

Compilation message

Subtask #1 30.0 / 30.0

Subtask #2 20.0 / 20.0

Subtask #3 50.0 / 50.0

Subtask #1
30.0 / 30.0

Subtask #2
20.0 / 20.0

Subtask #3
50.0 / 50.0