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Submission #290603

# Submission time Handle Problem Language Result Execution time Memory
290603 2020-09-04T06:48:15 Z achibasadzishvili JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 41 ms 5516 KB 
#include<bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pb push_back
using namespace std;
ll n,k,r[200005][3],ans;
string s;
int main(){
    ios::sync_with_stdio(false);
    cin >> n >> k >> s;
    
    for(int i=0; i<s.size(); i++){
        if(i){
            r[i][0] = r[i - 1][0];
            r[i][1] = r[i - 1][1];
            r[i][2] = r[i - 1][2];
        }
        if(s[i] == 'J')r[i][0]++;
        if(s[i] == 'O')r[i][1]++;
        if(s[i] == 'I')r[i][2]++;
    }
    ll ans = -1;
    for(int i=0; i<s.size(); i++){
        ll mx = 0,st = i;
        for(int j=0; j<3; j++){
            ll l = st , R = (int)s.size() - 1, mid,ind=-1;
            ll val = 0;
            if(st)val = r[st - 1][j];
            while(R >= l){
                mid = (l + R) / 2;
                if(r[mid][j] - val >= k){
                    R = mid - 1;
                    ind = mid;
                }
                else {
                    l = mid + 1;
                }
            }
            if(ind == -1){
                mx = -1;
                break;
            }
            st = ind;
            mx = max(mx , ind);
        }
        if(mx == -1)continue;
        if(ans == -1)ans = n - 3 * k - i - (n - mx - 1);
        ans = min(ans , n - 3 * k - i - (n - mx - 1));
    }
    
    cout << ans << '\n';
    
    return 0;
}

Compilation message

ho_t2.cpp: In function 'int main()':
ho_t2.cpp:13:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i=0; i<s.size(); i++){
      |                  ~^~~~~~~~~
ho_t2.cpp:24:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for(int i=0; i<s.size(); i++){
      |                  ~^~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 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 416 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 512 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 324 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 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 384 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 384 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 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 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 416 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 512 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 324 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 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 384 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 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 33 ms 5260 KB Output is correct
37 Correct 36 ms 5516 KB Output is correct
38 Correct 37 ms 5516 KB Output is correct
39 Correct 41 ms 5516 KB Output is correct
40 Correct 29 ms 5516 KB Output is correct
41 Correct 39 ms 5516 KB Output is correct
42 Correct 41 ms 5516 KB Output is correct
43 Correct 17 ms 3584 KB Output is correct
44 Correct 20 ms 4364 KB Output is correct
45 Correct 26 ms 5516 KB Output is correct
46 Correct 25 ms 5516 KB Output is correct
47 Correct 26 ms 5516 KB Output is correct
48 Correct 25 ms 5516 KB Output is correct
49 Correct 16 ms 3852 KB Output is correct
50 Correct 26 ms 5516 KB Output is correct
51 Correct 25 ms 5516 KB Output is correct
52 Correct 13 ms 5388 KB Output is correct
53 Correct 15 ms 5516 KB Output is correct
54 Correct 20 ms 5516 KB Output is correct
55 Correct 15 ms 5516 KB Output is correct
56 Correct 12 ms 5516 KB Output is correct