oj.uz

Submission #657352

# Submission time Handle Problem Language Result Execution time Memory
657352 2022-11-09T17:36:18 Z Juan JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 19 ms 4076 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn = 2e5 + 5, INF = 0x3f3f3f3f;

char v[maxn];
vector<int> vJ, vO, vI;
int cost[maxn][3];

int main(){
	int n, k; cin >> n >> k;
	for(int i = 0; i < n; i++){
		cin >> v[i];
		if(v[i]=='J') vJ.push_back(i);
		if(v[i]=='O') vO.push_back(i);
		if(v[i]=='I') vI.push_back(i);
	}

	memset(cost, INF, sizeof cost);
	int beginO=INF, beginI=INF;
	for(int i = 0, cnt=0; i < n; i++){
		if(cnt < vJ.size() && i==vJ[cnt]) cnt++;
		if(cnt==k && beginO==INF) beginO = i+1;
		if(cnt>=k)
			cost[i+1][0] = i - vJ[cnt-k] - (k-1);
		else cost[i+1][0] = INF;
	}

	int invalidO=0;
	for(; invalidO < vO.size(); invalidO++) if(vO[invalidO]>=beginO) break;
	for(int i = beginO, cnt=0; i < n; i++){
		if(cnt+invalidO < vO.size() && i==vO[cnt+invalidO]) cnt++;
		if(cnt==k && beginI==INF) beginI = i+1;
		if(cnt>=k)
			cost[i+1][1] = cost[vO[cnt-k+invalidO]][0] + i - vO[cnt-k+invalidO] - (k-1);
		else cost[i+1][1] = INF;
	}

	int invalidI=0;
	for(; invalidI < vI.size(); invalidI++) if(vI[invalidI]>=beginI) break;
	for(int i = beginI, cnt=0; i < n; i++){
		if(cnt+invalidI < vI.size() && i==vI[cnt+invalidI]) cnt++;
		if(cnt>=k)
			cost[i+1][2] = cost[vI[cnt-k+invalidI]][1] + i - vI[cnt-k+invalidI] - (k-1);
		else cost[i+1][2] = INF;
	}

	int ans = INF;
	for(int i = beginI; i <= n; i++) ans = min(ans, cost[i][2]);
	cout << (ans==INF ? -1 : ans) << '\n';
}

Compilation message

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:21:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |   if(cnt < vJ.size() && i==vJ[cnt]) cnt++;
      |      ~~~~^~~~~~~~~~~
ho_t2.cpp:29:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(; invalidO < vO.size(); invalidO++) if(vO[invalidO]>=beginO) break;
      |        ~~~~~~~~~^~~~~~~~~~~
ho_t2.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |   if(cnt+invalidO < vO.size() && i==vO[cnt+invalidO]) cnt++;
      |      ~~~~~~~~~~~~~^~~~~~~~~~~
ho_t2.cpp:39:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |  for(; invalidI < vI.size(); invalidI++) if(vI[invalidI]>=beginI) break;
      |        ~~~~~~~~~^~~~~~~~~~~
ho_t2.cpp:41:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |   if(cnt+invalidI < vI.size() && i==vI[cnt+invalidI]) cnt++;
      |      ~~~~~~~~~~~~~^~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2612 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 1 ms 2620 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2616 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2612 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 1 ms 2620 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2616 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2612 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2612 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 1 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2644 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2608 KB Output is correct
35 Correct 2 ms 2616 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2612 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 1 ms 2620 KB Output is correct
12 Correct 1 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2616 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 2 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2612 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 2 ms 2644 KB Output is correct
26 Correct 2 ms 2612 KB Output is correct
27 Correct 2 ms 2644 KB Output is correct
28 Correct 1 ms 2644 KB Output is correct
29 Correct 2 ms 2644 KB Output is correct
30 Correct 2 ms 2644 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 2 ms 2644 KB Output is correct
34 Correct 2 ms 2608 KB Output is correct
35 Correct 2 ms 2616 KB Output is correct
36 Correct 17 ms 3820 KB Output is correct
37 Correct 19 ms 3956 KB Output is correct
38 Correct 19 ms 4032 KB Output is correct
39 Correct 18 ms 4064 KB Output is correct
40 Correct 17 ms 3900 KB Output is correct
41 Correct 19 ms 3912 KB Output is correct
42 Correct 19 ms 3968 KB Output is correct
43 Correct 11 ms 3412 KB Output is correct
44 Correct 13 ms 3632 KB Output is correct
45 Correct 17 ms 4008 KB Output is correct
46 Correct 18 ms 3908 KB Output is correct
47 Correct 17 ms 3856 KB Output is correct
48 Correct 17 ms 4076 KB Output is correct
49 Correct 12 ms 3588 KB Output is correct
50 Correct 17 ms 3916 KB Output is correct
51 Correct 17 ms 3912 KB Output is correct
52 Correct 15 ms 3904 KB Output is correct
53 Correct 16 ms 3960 KB Output is correct
54 Correct 15 ms 3924 KB Output is correct
55 Correct 14 ms 3876 KB Output is correct
56 Correct 14 ms 3904 KB Output is correct