oj.uz

Submission #273017

# Submission time Handle Problem Language Result Execution time Memory
273017 2020-08-19T01:28:55 Z ChrisT JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 31 ms 2048 KB 
#include <bits/stdc++.h>
using namespace std;
char s[200'005];
int main() {
	int n,k;
	scanf ("%d %d",&n,&k);
	scanf ("%s",s+1);
	vector<int> js,os,is;
	for (int i = 1; i <= n; i++) {
		if (s[i] == 'J') js.push_back(i);
		else if (s[i] == 'O') os.push_back(i);
		else is.push_back(i);
	}
	int ret = 1e9;
	for (int i = 1; i <= n; i++) {
		int needJ = lower_bound(js.begin(),js.end(),i) - js.begin();
		needJ += k-1;
		if (needJ < (int)js.size()) {
			int pos = js[needJ];
			int needO = lower_bound(os.begin(),os.end(),pos) - os.begin();
			needO += k-1;
			if (needO < (int)os.size()) {
				pos = os[needO];
				int needI = lower_bound(is.begin(),is.end(),pos) - is.begin();
				needI += k-1;
				if (needI < (int)is.size()) {
					pos = is[needI];
					ret = min(ret,n - (i-1) - (n-pos) - k*3);
				}
			}
		}
	} 
	printf ("%d\n",ret<1e9?ret:-1);
    return 0;
}

Compilation message

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:6:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    6 |  scanf ("%d %d",&n,&k);
      |  ~~~~~~^~~~~~~~~~~~~~~
ho_t2.cpp:7:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    7 |  scanf ("%s",s+1);
      |  ~~~~~~^~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 368 KB Output is correct
14 Correct 1 ms 256 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 368 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 376 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 288 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 372 KB Output is correct
35 Correct 1 ms 384 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 368 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 376 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 288 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 372 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 25 ms 1532 KB Output is correct
37 Correct 28 ms 1916 KB Output is correct
38 Correct 31 ms 1916 KB Output is correct
39 Correct 25 ms 2044 KB Output is correct
40 Correct 21 ms 1916 KB Output is correct
41 Correct 24 ms 1916 KB Output is correct
42 Correct 27 ms 1916 KB Output is correct
43 Correct 13 ms 1276 KB Output is correct
44 Correct 15 ms 1384 KB Output is correct
45 Correct 20 ms 1912 KB Output is correct
46 Correct 20 ms 1908 KB Output is correct
47 Correct 26 ms 1916 KB Output is correct
48 Correct 20 ms 2044 KB Output is correct
49 Correct 15 ms 1408 KB Output is correct
50 Correct 20 ms 1916 KB Output is correct
51 Correct 20 ms 2048 KB Output is correct
52 Correct 13 ms 1532 KB Output is correct
53 Correct 14 ms 1916 KB Output is correct
54 Correct 13 ms 2040 KB Output is correct
55 Correct 10 ms 2040 KB Output is correct
56 Correct 10 ms 2040 KB Output is correct