oj.uz

Submission #235281

# Submission time Handle Problem Language Result Execution time Memory
235281 2020-05-27T14:57:09 Z AmineWeslati JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 141 ms 18052 KB 
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;

template <typename T>
using ordered_set=tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
//s.order_of_key(), *s.find_by_order()

using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

typedef string str;
typedef long long ll;
#define int ll
typedef double db;
typedef long double ld;

typedef pair<int,int> pi;
#define fi first
#define se second

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<str> vs;
typedef vector<pi> vpi;

#define pb push_back
#define eb emplace_back
#define pf push_front

#define lb lower_bound
#define ub upper_bound

#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)

const int MOD = 1e9+7; //998244353
const ll INF = 1e18;
const int nx[4]={0,0,1,-1}, ny[4]={1,-1,0,0};

int32_t main(){
   boost;
   int N,K; cin>>N>>K;
   str s;
   cin>>s;

   map <pair<char,int>,int> mp;
   int pref[3][N+1];
   memset(pref,0,sizeof(pref));

   for(int i=1; i<=N; i++){
      pref[0][i]+=pref[0][i-1]; pref[1][i]+=pref[1][i-1]; pref[2][i]+=pref[2][i-1];
      if(s[i-1]=='J') pref[0][i]++;
      else if(s[i-1]=='O') pref[1][i]++;
      else pref[2][i]++;
   }
   /*for(int i=1; i<=N; i++) cout << pref[1][i] <<  ' ';
   cout << endl;*/

   int cnt=0;
   for(int i=0; i<N;i++) if(s[i]=='J') mp[{s[i],++cnt}]=i;
   cnt=0; for(int i=0; i<N;i++) if(s[i]=='O') mp[{s[i],++cnt}]=i;
   cnt=0; for(int i=0; i<N;i++) if(s[i]=='I') mp[{s[i],++cnt}]=i;

   //cout << mp[{'O',2}] << endl;

	int res=INF;
	for(int i=0;i<N; i++) if(s[i]=='J'){
      int ans=0;
      int l=i,r;


      if(mp.count({'J',pref[0][l+1]+K-1})){
         r=mp[{'J',pref[0][l+1]+K-1}];
         ans+=pref[1][r+1]-pref[1][l]+pref[2][r+1]-pref[2][l];
         l=r;
      } else continue;
      //cout << ans << endl;

      if(pref[1][N]-pref[1][l+1]==0) continue;
      r=mp[{'O',pref[1][l+1]+1}];
      ans+=pref[0][r+1]-pref[0][l+1]+pref[2][r+1]-pref[2][l+1];
      l=r;
      //cout << ans << endl;
      //cout << endl;



      if(mp.count({'O',pref[1][l+1]+K-1})){
         r=mp[{'O',pref[1][l+1]+K-1}];
         ans+=pref[0][r+1]-pref[0][l]+pref[2][r+1]-pref[2][l];
         l=r;
      } else continue;
      //cout << ans << endl;

      if(pref[2][N]-pref[2][l+1]==0) continue;
      r=mp[{'I',pref[2][l+1]+1}];
      ans+=pref[0][r+1]-pref[0][l+1]+pref[1][r+1]-pref[1][l+1];
      l=r;
      /*cout << ans << endl;
      cout << endl;*/

      if(mp.count({'I',pref[2][l+1]+K-1})){
         r=mp[{'I',pref[2][l+1]+K-1}];
         ans+=pref[0][r+1]-pref[0][l]+pref[1][r+1]-pref[1][l];
         l=r;
      } else continue;
      //cout << ans << endl;


      res=min(ans,res);
	}

	if(res==INF) cout << -1 << endl;
	else cout << res << endl;

   return 0;
}

Subtask #1
1.0 / 1.0

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

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 6 ms 640 KB Output is correct
17 Correct 6 ms 640 KB Output is correct
18 Correct 5 ms 512 KB Output is correct
19 Correct 6 ms 768 KB Output is correct
20 Correct 6 ms 640 KB Output is correct
21 Correct 5 ms 640 KB Output is correct
22 Correct 5 ms 512 KB Output is correct
23 Correct 5 ms 512 KB Output is correct
24 Correct 6 ms 640 KB Output is correct
25 Correct 6 ms 640 KB Output is correct
26 Correct 5 ms 640 KB Output is correct
27 Correct 5 ms 640 KB Output is correct
28 Correct 6 ms 640 KB Output is correct
29 Correct 5 ms 640 KB Output is correct
30 Correct 6 ms 640 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 6 ms 640 KB Output is correct
33 Correct 5 ms 640 KB Output is correct
34 Correct 6 ms 640 KB Output is correct
35 Correct 5 ms 640 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 6 ms 640 KB Output is correct
17 Correct 6 ms 640 KB Output is correct
18 Correct 5 ms 512 KB Output is correct
19 Correct 6 ms 768 KB Output is correct
20 Correct 6 ms 640 KB Output is correct
21 Correct 5 ms 640 KB Output is correct
22 Correct 5 ms 512 KB Output is correct
23 Correct 5 ms 512 KB Output is correct
24 Correct 6 ms 640 KB Output is correct
25 Correct 6 ms 640 KB Output is correct
26 Correct 5 ms 640 KB Output is correct
27 Correct 5 ms 640 KB Output is correct
28 Correct 6 ms 640 KB Output is correct
29 Correct 5 ms 640 KB Output is correct
30 Correct 6 ms 640 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 6 ms 640 KB Output is correct
33 Correct 5 ms 640 KB Output is correct
34 Correct 6 ms 640 KB Output is correct
35 Correct 5 ms 640 KB Output is correct
36 Correct 122 ms 16772 KB Output is correct
37 Correct 138 ms 18004 KB Output is correct
38 Correct 140 ms 18052 KB Output is correct
39 Correct 141 ms 17796 KB Output is correct
40 Correct 117 ms 17924 KB Output is correct
41 Correct 131 ms 17924 KB Output is correct
42 Correct 140 ms 18052 KB Output is correct
43 Correct 65 ms 11256 KB Output is correct
44 Correct 84 ms 13956 KB Output is correct
45 Correct 109 ms 18052 KB Output is correct
46 Correct 110 ms 17924 KB Output is correct
47 Correct 109 ms 17924 KB Output is correct
48 Correct 110 ms 17924 KB Output is correct
49 Correct 72 ms 12032 KB Output is correct
50 Correct 108 ms 17924 KB Output is correct
51 Correct 109 ms 17924 KB Output is correct
52 Correct 77 ms 17284 KB Output is correct
53 Correct 86 ms 17944 KB Output is correct
54 Correct 109 ms 17924 KB Output is correct
55 Correct 88 ms 17924 KB Output is correct
56 Correct 72 ms 17924 KB Output is correct