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Submission #556962

# Submission time Handle Problem Language Result Execution time Memory
556962 2022-05-04T12:57:31 Z Alexandruabcde Mutating DNA (IOI21_dna) C++17
100 / 100
 54 ms 8596 KB 
#include "dna.h"
#include <bits/stdc++.h>

using namespace std;

constexpr int NMAX = 1e5 + 5;

int N;
int pref[NMAX][3][3];
int fr[NMAX][3];

int Value (char ch) {
    if (ch == 'A') return 0;
    if (ch == 'C') return 1;
    return 2;
}

void init(std::string a, std::string b) {
    N = a.size();
    for (int i = 1; i <= N; ++ i ) {
        pref[i][Value(a[i-1])][Value(b[i-1])] = 1;

        for (int j = 0; j < 3; ++ j )
            for (int k = 0; k < 3; ++ k )
                pref[i][j][k] += pref[i-1][j][k];

        fr[i][Value(a[i-1])] ++;
        fr[i][Value(b[i-1])] --;

        for (int j = 0; j < 3; ++ j )
            fr[i][j] += fr[i-1][j];
    }
}

int get_distance(int x, int y) {
    int mat[3][3];
    memset(mat, 0, sizeof(mat));
    int freq[3];
    memset(freq, 0, sizeof(freq));

    for (int i = 0; i < 3; ++ i )
        for (int j = 0; j < 3; ++ j )
            mat[i][j] = pref[y+1][i][j] - pref[x][i][j];

    for (int i = 0; i < 3; ++ i )
        freq[i] = fr[y+1][i] - fr[x][i];

    bool ok = 1;
    for (int i = 0; i < 3; ++ i )
        if (freq[i] != 0) ok = 0;

    if (!ok) return -1;

    int ans = 0;
    for (int i = 0; i < 3; ++ i ) {
        for (int j = i+1; j < 3; ++ j ) {
            int value = min(mat[i][j], mat[j][i]);

            ans = ans + value;
            mat[i][j] -= value;
            mat[j][i] -= value;
        }
    }

    int Max = 0;
    for (int i = 0; i < 3; ++ i ) {
        for (int j = 0; j < 3; ++ j ) {
            if (i == j) continue;

            Max = max(Max, mat[i][j]);
        }
    }

    return ans + 2 * Max;
}

Subtask #1
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 6796 KB Output is correct
2 Correct 40 ms 8184 KB Output is correct
3 Correct 38 ms 7676 KB Output is correct
4 Correct 37 ms 8200 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 5700 KB Output is correct
5 Correct 5 ms 5696 KB Output is correct
6 Correct 6 ms 5716 KB Output is correct
7 Correct 5 ms 5332 KB Output is correct
8 Correct 5 ms 5716 KB Output is correct
9 Correct 6 ms 5692 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 5700 KB Output is correct
5 Correct 5 ms 5696 KB Output is correct
6 Correct 6 ms 5716 KB Output is correct
7 Correct 5 ms 5332 KB Output is correct
8 Correct 5 ms 5716 KB Output is correct
9 Correct 6 ms 5692 KB Output is correct
10 Correct 54 ms 8056 KB Output is correct
11 Correct 35 ms 8172 KB Output is correct
12 Correct 35 ms 8088 KB Output is correct
13 Correct 35 ms 8388 KB Output is correct
14 Correct 38 ms 8584 KB Output is correct
15 Correct 51 ms 8440 KB Output is correct
16 Correct 33 ms 8080 KB Output is correct
17 Correct 32 ms 8220 KB Output is correct
18 Correct 36 ms 8420 KB Output is correct
19 Correct 32 ms 8104 KB Output is correct
20 Correct 33 ms 8212 KB Output is correct
21 Correct 32 ms 8436 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 5 ms 5700 KB Output is correct
5 Correct 5 ms 5696 KB Output is correct
6 Correct 6 ms 5716 KB Output is correct
7 Correct 5 ms 5332 KB Output is correct
8 Correct 5 ms 5716 KB Output is correct
9 Correct 6 ms 5692 KB Output is correct
10 Correct 6 ms 5204 KB Output is correct
11 Correct 5 ms 5716 KB Output is correct
12 Correct 6 ms 5312 KB Output is correct
13 Correct 5 ms 5716 KB Output is correct
14 Correct 7 ms 5696 KB Output is correct
15 Correct 5 ms 5696 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 6796 KB Output is correct
2 Correct 40 ms 8184 KB Output is correct
3 Correct 38 ms 7676 KB Output is correct
4 Correct 37 ms 8200 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 304 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 5 ms 5700 KB Output is correct
12 Correct 5 ms 5696 KB Output is correct
13 Correct 6 ms 5716 KB Output is correct
14 Correct 5 ms 5332 KB Output is correct
15 Correct 5 ms 5716 KB Output is correct
16 Correct 6 ms 5692 KB Output is correct
17 Correct 54 ms 8056 KB Output is correct
18 Correct 35 ms 8172 KB Output is correct
19 Correct 35 ms 8088 KB Output is correct
20 Correct 35 ms 8388 KB Output is correct
21 Correct 38 ms 8584 KB Output is correct
22 Correct 51 ms 8440 KB Output is correct
23 Correct 33 ms 8080 KB Output is correct
24 Correct 32 ms 8220 KB Output is correct
25 Correct 36 ms 8420 KB Output is correct
26 Correct 32 ms 8104 KB Output is correct
27 Correct 33 ms 8212 KB Output is correct
28 Correct 32 ms 8436 KB Output is correct
29 Correct 6 ms 5204 KB Output is correct
30 Correct 5 ms 5716 KB Output is correct
31 Correct 6 ms 5312 KB Output is correct
32 Correct 5 ms 5716 KB Output is correct
33 Correct 7 ms 5696 KB Output is correct
34 Correct 5 ms 5696 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 48 ms 7812 KB Output is correct
37 Correct 37 ms 8180 KB Output is correct
38 Correct 38 ms 8168 KB Output is correct
39 Correct 37 ms 8596 KB Output is correct
40 Correct 49 ms 8584 KB Output is correct
41 Correct 4 ms 5716 KB Output is correct
42 Correct 39 ms 8168 KB Output is correct
43 Correct 34 ms 8420 KB Output is correct
44 Correct 45 ms 8432 KB Output is correct
45 Correct 32 ms 8196 KB Output is correct
46 Correct 31 ms 8440 KB Output is correct
47 Correct 33 ms 8444 KB Output is correct