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Submission #206618

# Submission time Handle Problem Language Result Execution time Memory
206618 2020-03-04T09:01:14 Z stefdasca Nivelle (COCI20_nivelle) C++14
110 / 110
 114 ms 10868 KB 
#include<bits/stdc++.h>
using namespace std;
int n, lst[27][100002];
string s;

int L, R, col;

void chk(int st, int dr, int cnt)
{
    if(L == 0)
    {
        L = st;
        R = dr;
        col = cnt;
    }
    else
    {
        long long a = cnt;
        long long b = dr - st + 1;
        long long c = col;
        long long d = R - L + 1;
        if(a * d < b * c)
        {
            L = st;
            R = dr;
            col = cnt;
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n;
    cin >> s;
    s = ' ' + s;
    for(int i = 1; i <= n; ++i)
    {
        for(int j = 0; j <= 25; ++j)
            lst[j][i] = lst[j][i-1];
        lst[s[i] - 'a'][i] = i;
        vector<int> v;
        for(int j = 0; j <= 25; ++j)
            if(lst[j][i] != 0)
                v.push_back(lst[j][i]);
        v.push_back(0);
        sort(v.begin(), v.end());
        for(int x = v.size() - 1; x > 0; --x)
            chk(v[x - 1] + 1, i, v.size() - x);
    }
    cout << L << " " << R << '\n';
    return 0;
}

Subtask #1
7.0 / 7.0

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

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 632 KB Output is correct
2 Correct 7 ms 632 KB Output is correct
3 Correct 7 ms 632 KB Output is correct
4 Correct 7 ms 632 KB Output is correct
5 Correct 7 ms 632 KB Output is correct
6 Correct 7 ms 632 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 10868 KB Output is correct
2 Correct 26 ms 10784 KB Output is correct
3 Correct 27 ms 10868 KB Output is correct
4 Correct 26 ms 10780 KB Output is correct
5 Correct 25 ms 10780 KB Output is correct
6 Correct 26 ms 10868 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 34 ms 10780 KB Output is correct
2 Correct 35 ms 10868 KB Output is correct
3 Correct 35 ms 10868 KB Output is correct
4 Correct 34 ms 10868 KB Output is correct
5 Correct 35 ms 10868 KB Output is correct
6 Correct 35 ms 10780 KB Output is correct

Subtask #5
48.0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 107 ms 10868 KB Output is correct
2 Correct 106 ms 10844 KB Output is correct
3 Correct 105 ms 10868 KB Output is correct
4 Correct 105 ms 10868 KB Output is correct
5 Correct 106 ms 10868 KB Output is correct
6 Correct 114 ms 10868 KB Output is correct