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Submission #790081

# Submission time Handle Problem Language Result Execution time Memory
790081 2023-07-22T10:22:32 Z alexander707070 Mutating DNA (IOI21_dna) C++17
100 / 100
 33 ms 8592 KB 
#include<bits/stdc++.h>
#define MAXN 300007
using namespace std;

int n,ans;
int pref[MAXN][3],pref2[MAXN][3];
int pairs[MAXN][6];
int a,b,c,d,e,f,curr;

bool ok(int l,int r){
    for(int i=0;i<3;i++){
        if(pref[r][i]-pref[l-1][i] != pref2[r][i]-pref2[l-1][i])return false;
    }
    return true;
}

void init(string a, string b){
    n=int(a.size());

    for(int i=1;i<=n;i++){
        if(a[i-1]=='A')pref[i][0]++;
        if(a[i-1]=='T')pref[i][1]++;
        if(a[i-1]=='C')pref[i][2]++;

        if(b[i-1]=='A')pref2[i][0]++;
        if(b[i-1]=='T')pref2[i][1]++;
        if(b[i-1]=='C')pref2[i][2]++;

        if(a[i-1]=='A' and b[i-1]=='T')pairs[i][0]++;
        if(a[i-1]=='T' and b[i-1]=='A')pairs[i][1]++;

        if(a[i-1]=='A' and b[i-1]=='C')pairs[i][2]++;
        if(a[i-1]=='C' and b[i-1]=='A')pairs[i][3]++;

        if(a[i-1]=='C' and b[i-1]=='T')pairs[i][4]++;
        if(a[i-1]=='T' and b[i-1]=='C')pairs[i][5]++;

        for(int f=0;f<3;f++){
            pref[i][f]+=pref[i-1][f];
            pref2[i][f]+=pref2[i-1][f];
        }

        for(int f=0;f<6;f++){
            pairs[i][f]+=pairs[i-1][f];
        }
    }
}

int get_distance(int x, int y){
    x++; y++;
    if(!ok(x,y))return -1;

    ans=0;

    a=pairs[y][0]-pairs[x-1][0];
    b=pairs[y][1]-pairs[x-1][1];
    c=pairs[y][2]-pairs[x-1][2];
    d=pairs[y][3]-pairs[x-1][3];
    e=pairs[y][4]-pairs[x-1][4];
    f=pairs[y][5]-pairs[x-1][5];

    curr=min(a,b); ans+=curr;
    a-=curr; b-=curr;

    curr=min(c,d); ans+=curr;
    c-=curr; d-=curr;

    curr=min(e,f); ans+=curr;
    e-=curr; f-=curr;

    ans+=2*max(a,b);

    return ans;
}

/*
int main(){
    init("ATACAT", "ACTATA");
    cout<<get_distance(1,3)<<"\n";
    cout<<get_distance(4,5)<<"\n";
    cout<<get_distance(3,5)<<"\n";
}
*/

Subtask #1
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 6804 KB Output is correct
2 Correct 27 ms 6820 KB Output is correct
3 Correct 26 ms 6348 KB Output is correct
4 Correct 28 ms 8140 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 212 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 4 ms 5460 KB Output is correct
5 Correct 4 ms 5588 KB Output is correct
6 Correct 4 ms 5460 KB Output is correct
7 Correct 4 ms 5204 KB Output is correct
8 Correct 4 ms 5588 KB Output is correct
9 Correct 3 ms 5568 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 4 ms 5460 KB Output is correct
5 Correct 4 ms 5588 KB Output is correct
6 Correct 4 ms 5460 KB Output is correct
7 Correct 4 ms 5204 KB Output is correct
8 Correct 4 ms 5588 KB Output is correct
9 Correct 3 ms 5568 KB Output is correct
10 Correct 28 ms 6748 KB Output is correct
11 Correct 28 ms 6784 KB Output is correct
12 Correct 27 ms 6856 KB Output is correct
13 Correct 27 ms 6940 KB Output is correct
14 Correct 28 ms 7200 KB Output is correct
15 Correct 26 ms 7124 KB Output is correct
16 Correct 31 ms 6824 KB Output is correct
17 Correct 27 ms 7028 KB Output is correct
18 Correct 33 ms 7160 KB Output is correct
19 Correct 26 ms 6896 KB Output is correct
20 Correct 26 ms 7068 KB Output is correct
21 Correct 27 ms 7292 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 4 ms 5460 KB Output is correct
5 Correct 4 ms 5588 KB Output is correct
6 Correct 4 ms 5460 KB Output is correct
7 Correct 4 ms 5204 KB Output is correct
8 Correct 4 ms 5588 KB Output is correct
9 Correct 3 ms 5568 KB Output is correct
10 Correct 6 ms 5092 KB Output is correct
11 Correct 5 ms 5716 KB Output is correct
12 Correct 5 ms 5332 KB Output is correct
13 Correct 5 ms 5716 KB Output is correct
14 Correct 5 ms 5728 KB Output is correct
15 Correct 4 ms 5716 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 6804 KB Output is correct
2 Correct 27 ms 6820 KB Output is correct
3 Correct 26 ms 6348 KB Output is correct
4 Correct 28 ms 8140 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 4 ms 5460 KB Output is correct
12 Correct 4 ms 5588 KB Output is correct
13 Correct 4 ms 5460 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 4 ms 5588 KB Output is correct
16 Correct 3 ms 5568 KB Output is correct
17 Correct 28 ms 6748 KB Output is correct
18 Correct 28 ms 6784 KB Output is correct
19 Correct 27 ms 6856 KB Output is correct
20 Correct 27 ms 6940 KB Output is correct
21 Correct 28 ms 7200 KB Output is correct
22 Correct 26 ms 7124 KB Output is correct
23 Correct 31 ms 6824 KB Output is correct
24 Correct 27 ms 7028 KB Output is correct
25 Correct 33 ms 7160 KB Output is correct
26 Correct 26 ms 6896 KB Output is correct
27 Correct 26 ms 7068 KB Output is correct
28 Correct 27 ms 7292 KB Output is correct
29 Correct 6 ms 5092 KB Output is correct
30 Correct 5 ms 5716 KB Output is correct
31 Correct 5 ms 5332 KB Output is correct
32 Correct 5 ms 5716 KB Output is correct
33 Correct 5 ms 5728 KB Output is correct
34 Correct 4 ms 5716 KB Output is correct
35 Correct 1 ms 308 KB Output is correct
36 Correct 28 ms 7752 KB Output is correct
37 Correct 28 ms 8204 KB Output is correct
38 Correct 28 ms 8232 KB Output is correct
39 Correct 28 ms 8592 KB Output is correct
40 Correct 28 ms 8568 KB Output is correct
41 Correct 5 ms 5716 KB Output is correct
42 Correct 28 ms 8084 KB Output is correct
43 Correct 29 ms 8496 KB Output is correct
44 Correct 28 ms 8436 KB Output is correct
45 Correct 27 ms 8176 KB Output is correct
46 Correct 27 ms 8544 KB Output is correct
47 Correct 27 ms 8500 KB Output is correct