Submission #55416

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
55416	2018-07-07T08:45:53 Z	김세빈(#1545)	Toilets (JOI16_toilets)	C++11	36 / 100	8 ms	892 KB

toilets

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

char str[202020];
ll n, k, f, m, ans1, ans2;

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 ++;
	}
	
	if(f < m){
		printf("-1\n");
		return 0;
	}
	
	f = m = 0;
	
	for(i=n+n-1;i>=0;i--){
		if(str[i] == 'F') f ++;
		else m ++;
		
		if(i & 1){
			if(m - f & 1) ans1 = max(ans1, m - f);
			else ans1 = max(ans1, m - f + 1);
		}
		else{
			if(m - f & 1) ans2 = max(ans2, m - f + 1);
			else ans2 = max(ans2, m - f);
		}
	}
	
	printf("%lld\n", min(ans1, ans2));
	
	return 0;
}

Compilation message

toilets.cpp: In function 'int main()':
toilets.cpp:37:9: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
    if(m - f & 1) ans1 = max(ans1, m - f);
       ~~^~~
toilets.cpp:41:9: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
    if(m - f & 1) ans2 = max(ans2, m - f + 1);
       ~~^~~
toilets.cpp:12:8: warning: unused variable 's' [-Wunused-variable]
  ll i, s, e;
        ^
toilets.cpp:12:11: warning: unused variable 'e' [-Wunused-variable]
  ll i, s, e;
           ^
toilets.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
toilets.cpp:18:7: 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

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	3 ms	356 KB	Output is correct
3	Correct	3 ms	432 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	3 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	3 ms	596 KB	Output is correct
9	Correct	3 ms	608 KB	Output is correct
10	Correct	2 ms	608 KB	Output is correct
11	Correct	2 ms	628 KB	Output is correct
12	Correct	2 ms	628 KB	Output is correct
13	Correct	2 ms	628 KB	Output is correct
14	Correct	2 ms	628 KB	Output is correct
15	Correct	3 ms	628 KB	Output is correct
16	Correct	2 ms	628 KB	Output is correct
17	Correct	3 ms	628 KB	Output is correct
18	Correct	3 ms	628 KB	Output is correct
19	Correct	3 ms	628 KB	Output is correct
20	Correct	2 ms	628 KB	Output is correct
21	Correct	2 ms	628 KB	Output is correct
22	Correct	3 ms	628 KB	Output is correct

Subtask #2
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	3 ms	356 KB	Output is correct
3	Correct	3 ms	432 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	3 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	3 ms	596 KB	Output is correct
9	Correct	3 ms	608 KB	Output is correct
10	Correct	2 ms	608 KB	Output is correct
11	Correct	2 ms	628 KB	Output is correct
12	Correct	2 ms	628 KB	Output is correct
13	Correct	2 ms	628 KB	Output is correct
14	Correct	2 ms	628 KB	Output is correct
15	Correct	3 ms	628 KB	Output is correct
16	Correct	2 ms	628 KB	Output is correct
17	Correct	3 ms	628 KB	Output is correct
18	Correct	3 ms	628 KB	Output is correct
19	Correct	3 ms	628 KB	Output is correct
20	Correct	2 ms	628 KB	Output is correct
21	Correct	2 ms	628 KB	Output is correct
22	Correct	3 ms	628 KB	Output is correct
23	Correct	7 ms	764 KB	Output is correct
24	Correct	6 ms	764 KB	Output is correct
25	Correct	7 ms	812 KB	Output is correct
26	Correct	4 ms	812 KB	Output is correct
27	Correct	3 ms	812 KB	Output is correct
28	Correct	7 ms	812 KB	Output is correct
29	Correct	5 ms	836 KB	Output is correct
30	Correct	5 ms	836 KB	Output is correct
31	Correct	6 ms	836 KB	Output is correct
32	Correct	6 ms	892 KB	Output is correct
33	Correct	3 ms	892 KB	Output is correct
34	Correct	4 ms	892 KB	Output is correct
35	Correct	7 ms	892 KB	Output is correct
36	Correct	8 ms	892 KB	Output is correct
37	Correct	5 ms	892 KB	Output is correct
38	Correct	5 ms	892 KB	Output is correct
39	Correct	5 ms	892 KB	Output is correct
40	Correct	6 ms	892 KB	Output is correct

Subtask #3
0 / 64.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	3 ms	356 KB	Output is correct
3	Correct	3 ms	432 KB	Output is correct
4	Correct	2 ms	468 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	3 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	3 ms	596 KB	Output is correct
9	Correct	3 ms	608 KB	Output is correct
10	Correct	2 ms	608 KB	Output is correct
11	Correct	2 ms	628 KB	Output is correct
12	Correct	2 ms	628 KB	Output is correct
13	Correct	2 ms	628 KB	Output is correct
14	Correct	2 ms	628 KB	Output is correct
15	Correct	3 ms	628 KB	Output is correct
16	Correct	2 ms	628 KB	Output is correct
17	Correct	3 ms	628 KB	Output is correct
18	Correct	3 ms	628 KB	Output is correct
19	Correct	3 ms	628 KB	Output is correct
20	Correct	2 ms	628 KB	Output is correct
21	Correct	2 ms	628 KB	Output is correct
22	Correct	3 ms	628 KB	Output is correct
23	Correct	7 ms	764 KB	Output is correct
24	Correct	6 ms	764 KB	Output is correct
25	Correct	7 ms	812 KB	Output is correct
26	Correct	4 ms	812 KB	Output is correct
27	Correct	3 ms	812 KB	Output is correct
28	Correct	7 ms	812 KB	Output is correct
29	Correct	5 ms	836 KB	Output is correct
30	Correct	5 ms	836 KB	Output is correct
31	Correct	6 ms	836 KB	Output is correct
32	Correct	6 ms	892 KB	Output is correct
33	Correct	3 ms	892 KB	Output is correct
34	Correct	4 ms	892 KB	Output is correct
35	Correct	7 ms	892 KB	Output is correct
36	Correct	8 ms	892 KB	Output is correct
37	Correct	5 ms	892 KB	Output is correct
38	Correct	5 ms	892 KB	Output is correct
39	Correct	5 ms	892 KB	Output is correct
40	Correct	6 ms	892 KB	Output is correct
41	Incorrect	2 ms	892 KB	Output isn't correct
42	Halted	0 ms	0 KB	-

Submission #55416

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