oj.uz

Submission #198251

# Submission time Handle Problem Language Result Execution time Memory
198251 2020-01-25T08:53:56 Z alrad Nivelle (COCI20_nivelle) C++17
110 / 110
 44 ms 632 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long double ld;

int main() {
   ios_base :: sync_with_stdio(0);
   cin.tie(0) , cout.tie(0);
   int n;
   cin >> n;
   vector<char> s(n);
   for (int i = 0; i < n; i++) {
      cin >> s[i];
   }
   long double ans = 2.0;
   int L = 0 , R = 0;
   for (int cnt = 1; cnt <= 26; cnt++) {
      vector<int> tot(26 , 0);
      int r = 0 , x = 0;
      for (int i = 0; i < n; i++) {
         while (r < n && x <= cnt) {
            if (!tot[int(s[r] - 'a')]) {
               if (x + 1 > cnt) {
                  break;
               }
               x++;
            }
            tot[int(s[r] - 'a')]++;
            r++;
         }
         if (ld(cnt) / ld(r - i) < ans) {
            ans = ld(cnt) / ld(r - i);
            L = i;
            R = r - 1;
         }
         if (tot[int(s[i] - 'a')] == 1) {
            x--;
         }
         tot[int(s[i] - 'a')]--;
      }
   }
   cout << L + 1 << " " << R + 1 << '\n';
   return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 4 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 10 ms 348 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 504 KB Output is correct
2 Correct 27 ms 504 KB Output is correct
3 Correct 28 ms 504 KB Output is correct
4 Correct 28 ms 376 KB Output is correct
5 Correct 27 ms 512 KB Output is correct
6 Correct 27 ms 376 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 504 KB Output is correct
2 Correct 28 ms 376 KB Output is correct
3 Correct 29 ms 512 KB Output is correct
4 Correct 29 ms 504 KB Output is correct
5 Correct 29 ms 376 KB Output is correct
6 Correct 30 ms 504 KB Output is correct

Subtask #5
48.0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 512 KB Output is correct
2 Correct 40 ms 504 KB Output is correct
3 Correct 43 ms 632 KB Output is correct
4 Correct 40 ms 472 KB Output is correct
5 Correct 42 ms 504 KB Output is correct
6 Correct 43 ms 508 KB Output is correct