답안 #55403 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
55403	2018-07-07T07:51:04 Z	김세빈(#1545)	Toilets (JOI16_toilets)	C++11	36 / 100	37 ms	6372 KB

toilets

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

char str[202020];
ll K[202020], S[202020];
ll T[606060], L[606060];
ll n, k, f, m;

bool check(ll k)
{
	ll i, a, b, s;
	
	for(i=0;i<=n+n;i++) S[i] = 0;
	
	a = b = s = 0;
	
	for(i=0;i<n+n;i++){
		if(a < m && ((~i & 1) || f - b >= m - (a+1)) && (K[a+1] < b+1 || s + S[b+1] < k)){
			S[b+1] ++; S[K[a+1]+1] --;
			a ++;
		}
		else if(b < f && ((~i & 1) || f - (b+1) >= m - a)){
			b ++;
			s += S[b];
		}
		else return 0;
	}
	
	return 1;
}

int main()
{
	ll i, s, e;
	
	scanf("%lld%lld", &n, &k);
	
	if(k > 1) return 0;
	
	scanf("%s", str);
	
	for(i=0;i<n+n;i++){
		if(str[i] == 'F') f ++;
		else{
			m ++;
			K[m] = f;
		}
	}
	
	if(f < m){
		printf("-1\n");
		return 0;
	}
	
	for(s=0,e=n+n;s<=e;){
		if(check(s+e>>1)) e = (s+e>>1) - 1;
		else s = (s+e>>1) + 1;
	}
	
	printf("%lld\n", e + 1);
	
	return 0;
}

Compilation message

toilets.cpp: In function 'int main()':
toilets.cpp:59:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   if(check(s+e>>1)) e = (s+e>>1) - 1;
            ~^~
toilets.cpp:59:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   if(check(s+e>>1)) e = (s+e>>1) - 1;
                          ~^~
toilets.cpp:60:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   else s = (s+e>>1) + 1;
             ~^~
toilets.cpp:39:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
toilets.cpp:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", str);
  ~~~~~^~~~~~~~~~~

Subtask #1
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	3 ms	508 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	2 ms	544 KB	Output is correct
7	Correct	3 ms	544 KB	Output is correct
8	Correct	4 ms	544 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	0 ms	544 KB	Output is correct
11	Correct	4 ms	584 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	2 ms	620 KB	Output is correct
17	Correct	2 ms	624 KB	Output is correct
18	Correct	2 ms	636 KB	Output is correct
19	Correct	2 ms	636 KB	Output is correct
20	Correct	2 ms	636 KB	Output is correct
21	Correct	2 ms	636 KB	Output is correct
22	Correct	2 ms	636 KB	Output is correct

Subtask #2
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	3 ms	508 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	2 ms	544 KB	Output is correct
7	Correct	3 ms	544 KB	Output is correct
8	Correct	4 ms	544 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	0 ms	544 KB	Output is correct
11	Correct	4 ms	584 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	2 ms	620 KB	Output is correct
17	Correct	2 ms	624 KB	Output is correct
18	Correct	2 ms	636 KB	Output is correct
19	Correct	2 ms	636 KB	Output is correct
20	Correct	2 ms	636 KB	Output is correct
21	Correct	2 ms	636 KB	Output is correct
22	Correct	2 ms	636 KB	Output is correct
23	Correct	23 ms	3068 KB	Output is correct
24	Correct	29 ms	3324 KB	Output is correct
25	Correct	27 ms	3424 KB	Output is correct
26	Correct	19 ms	3424 KB	Output is correct
27	Correct	4 ms	3424 KB	Output is correct
28	Correct	32 ms	4028 KB	Output is correct
29	Correct	29 ms	4168 KB	Output is correct
30	Correct	25 ms	4680 KB	Output is correct
31	Correct	32 ms	4848 KB	Output is correct
32	Correct	27 ms	5036 KB	Output is correct
33	Correct	4 ms	5036 KB	Output is correct
34	Correct	21 ms	5036 KB	Output is correct
35	Correct	35 ms	5668 KB	Output is correct
36	Correct	37 ms	5816 KB	Output is correct
37	Correct	15 ms	5816 KB	Output is correct
38	Correct	4 ms	5816 KB	Output is correct
39	Correct	27 ms	6296 KB	Output is correct
40	Correct	26 ms	6372 KB	Output is correct

Subtask #3
0 / 64.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	432 KB	Output is correct
4	Correct	3 ms	508 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	2 ms	544 KB	Output is correct
7	Correct	3 ms	544 KB	Output is correct
8	Correct	4 ms	544 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	0 ms	544 KB	Output is correct
11	Correct	4 ms	584 KB	Output is correct
12	Correct	2 ms	620 KB	Output is correct
13	Correct	2 ms	620 KB	Output is correct
14	Correct	2 ms	620 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	2 ms	620 KB	Output is correct
17	Correct	2 ms	624 KB	Output is correct
18	Correct	2 ms	636 KB	Output is correct
19	Correct	2 ms	636 KB	Output is correct
20	Correct	2 ms	636 KB	Output is correct
21	Correct	2 ms	636 KB	Output is correct
22	Correct	2 ms	636 KB	Output is correct
23	Correct	23 ms	3068 KB	Output is correct
24	Correct	29 ms	3324 KB	Output is correct
25	Correct	27 ms	3424 KB	Output is correct
26	Correct	19 ms	3424 KB	Output is correct
27	Correct	4 ms	3424 KB	Output is correct
28	Correct	32 ms	4028 KB	Output is correct
29	Correct	29 ms	4168 KB	Output is correct
30	Correct	25 ms	4680 KB	Output is correct
31	Correct	32 ms	4848 KB	Output is correct
32	Correct	27 ms	5036 KB	Output is correct
33	Correct	4 ms	5036 KB	Output is correct
34	Correct	21 ms	5036 KB	Output is correct
35	Correct	35 ms	5668 KB	Output is correct
36	Correct	37 ms	5816 KB	Output is correct
37	Correct	15 ms	5816 KB	Output is correct
38	Correct	4 ms	5816 KB	Output is correct
39	Correct	27 ms	6296 KB	Output is correct
40	Correct	26 ms	6372 KB	Output is correct
41	Incorrect	2 ms	6372 KB	Output isn't correct
42	Halted	0 ms	0 KB	-

답안 #55403

Compilation message

Subtask #1 14.0 / 14.0

Subtask #2 22.0 / 22.0

Subtask #3 0 / 64.0

Subtask #1
14.0 / 14.0

Subtask #2
22.0 / 22.0

Subtask #3
0 / 64.0