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답안 #384175

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
384175 2021-03-31T16:12:34 Z sumit_kk10 JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 28 ms 2736 KB 
#include <bits/stdc++.h>
#define fast ios_base::sync_with_stdio(0);cin.tie(NULL);cout.tie(NULL)
#define ll long long
using namespace std;
const int N = 1e6 + 5;
const int MOD = 1e9 + 7;
int n, k;
string s;

void solve(){
	cin >> n >> k >> s;
	map<char, vector<int> > pos;
	
	for(int i = 0; i < s.size(); ++i)
		pos[s[i]].push_back(i);
	
	int pre_sum[pos['J'].size()] = {0}, pre_sum1[pos['O'].size()] = {0}, pre_sum2[pos['I'].size()] = {0};
	
	for(int i = 1; i < pos['J'].size(); ++i)
		pre_sum[i] = pre_sum[i - 1] + (pos['J'][i] - pos['J'][i - 1] - 1);

	for(int i = 1; i < pos['O'].size(); ++i)
		pre_sum1[i] = pre_sum1[i - 1] + (pos['O'][i] - pos['O'][i - 1] - 1);

	for(int i = 1; i < pos['I'].size(); ++i)
		pre_sum2[i] = pre_sum2[i - 1] + (pos['I'][i] - pos['I'][i - 1] - 1);

	int ans = INT_MAX;

	for(int i = 0; i < pos['J'].size(); ++i){
		int till = i + k - 1;
		if(till >= pos['J'].size()) 
			continue;
		int res;
		res = pre_sum[till] - pre_sum[i];
		int from = pos['J'][till] + 1;
		int low = 0, high = pos['O'].size() - 1, cur = -1;
		while(low <= high){
			int mid = (low + high) / 2;
			if(pos['O'][mid] >= from){
				cur = mid;
				high = mid - 1;
			}
			else
				low = mid + 1;
		}
		if(cur == -1) continue;
		if(cur + k - 1 >= pos['O'].size()) continue;
		res += pos['O'][cur] - from;
		res += pre_sum1[cur + k - 1] - pre_sum1[cur];
		int from1 = pos['O'][cur + k - 1] + 1;
		low = 0, high = pos['I'].size() - 1, cur = -1;
		while(low <= high){
			int mid = (low + high) / 2;
			if(pos['I'][mid] >= from1){
				cur = mid;
				high = mid - 1;
			}
			else
				low = mid + 1;
		}
		if(cur == -1) continue;
		if(cur + k - 1 >= pos['I'].size()) continue;
		res += pos['I'][cur] - from1;
		res += pre_sum2[cur + k - 1] - pre_sum2[cur];
		ans = min(ans, res); 
	}
	cout << (ans == INT_MAX ? -1 : ans) << "\n";
}

int main(){
    fast;
	int t = 1;
	// cin >> t;
	while(t--)
		solve();
	return 0;
}

Compilation message

ho_t2.cpp: In function 'void solve()':
ho_t2.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for(int i = 0; i < s.size(); ++i)
      |                 ~~^~~~~~~~~~
ho_t2.cpp:19:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for(int i = 1; i < pos['J'].size(); ++i)
      |                 ~~^~~~~~~~~~~~~~~~~
ho_t2.cpp:22:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  for(int i = 1; i < pos['O'].size(); ++i)
      |                 ~~^~~~~~~~~~~~~~~~~
ho_t2.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for(int i = 1; i < pos['I'].size(); ++i)
      |                 ~~^~~~~~~~~~~~~~~~~
ho_t2.cpp:30:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |  for(int i = 0; i < pos['J'].size(); ++i){
      |                 ~~^~~~~~~~~~~~~~~~~
ho_t2.cpp:32:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |   if(till >= pos['J'].size())
      |      ~~~~~^~~~~~~~~~~~~~~~~~
ho_t2.cpp:48:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |   if(cur + k - 1 >= pos['O'].size()) continue;
      |      ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
ho_t2.cpp:63:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |   if(cur + k - 1 >= pos['I'].size()) continue;
      |      ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 2 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct

Subtask #3
87.0 / 87.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 2 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 26 ms 2408 KB Output is correct
37 Correct 28 ms 2736 KB Output is correct
38 Correct 28 ms 2616 KB Output is correct
39 Correct 26 ms 2516 KB Output is correct
40 Correct 21 ms 2532 KB Output is correct
41 Correct 24 ms 2472 KB Output is correct
42 Correct 28 ms 2736 KB Output is correct
43 Correct 12 ms 1800 KB Output is correct
44 Correct 14 ms 2160 KB Output is correct
45 Correct 18 ms 2532 KB Output is correct
46 Correct 18 ms 2524 KB Output is correct
47 Correct 20 ms 2532 KB Output is correct
48 Correct 18 ms 2532 KB Output is correct
49 Correct 13 ms 1872 KB Output is correct
50 Correct 18 ms 2520 KB Output is correct
51 Correct 18 ms 2532 KB Output is correct
52 Correct 9 ms 2288 KB Output is correct
53 Correct 10 ms 2524 KB Output is correct
54 Correct 21 ms 2424 KB Output is correct
55 Correct 12 ms 2444 KB Output is correct
56 Correct 7 ms 2424 KB Output is correct