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Submission #802306

# Submission time Handle Problem Language Result Execution time Memory
802306 2023-08-02T11:31:09 Z borisAngelov Election (BOI18_election) C++17
28 / 100
 3000 ms 1012 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 500005;

int n;
string s;

void fastIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int main()
{
    fastIO();

    cin >> n >> s;
    s = '#' + s;

    int q;
    cin >> q;

    while (q--)
    {
        int l, r;
        cin >> l >> r;

        vector<bool> gone(n + 5, false);

        int c = 0;
        int t = 0;

        for (int i = l; i <= r; ++i)
        {
            if (s[i] == 'C')
            {
                c++;
            }
            else
            {
                if (t + 1 <= c)
                {
                    ++t;
                }
                else
                {
                    gone[i] = true;
                }
            }
        }

        c = 0;
        t = 0;

        for (int i = r; i >= l; --i)
        {
            if (s[i] == 'C')
            {
                ++c;
            }
            else if (gone[i] == false)
            {
                if (t + 1 <= c)
                {
                    ++t;
                }
                else
                {
                    gone[i] = true;
                }
            }
        }

        int ans = 0;

        for (int i = l; i <= r; ++i)
        {
            ans += gone[i];
        }

        cout << ans << '\n';
    }

    return 0;
}

Subtask #1
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 340 KB Output is correct
2 Correct 8 ms 340 KB Output is correct
3 Correct 5 ms 340 KB Output is correct
4 Correct 5 ms 340 KB Output is correct
5 Correct 4 ms 340 KB Output is correct

Subtask #2
0 / 54.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 340 KB Output is correct
2 Correct 8 ms 340 KB Output is correct
3 Correct 5 ms 340 KB Output is correct
4 Correct 5 ms 340 KB Output is correct
5 Correct 4 ms 340 KB Output is correct
6 Execution timed out 3059 ms 1012 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #3
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 340 KB Output is correct
2 Correct 8 ms 340 KB Output is correct
3 Correct 5 ms 340 KB Output is correct
4 Correct 5 ms 340 KB Output is correct
5 Correct 4 ms 340 KB Output is correct
6 Execution timed out 3059 ms 1012 KB Time limit exceeded
7 Halted 0 ms 0 KB -