Submission #497318

#	Time	Username	Problem	Language	Result	Execution time	Memory
497318		Maqsut_03	Mutating DNA (IOI21_dna)	C++17	0 / 100	24 ms	6044 KiB

dna

#include<bits/stdc++.h>
#include "dna.h"
using namespace std;

string a, b, a1, b1, a2;
int n;
int arr[26];

void init(string a0, string b0) {
    a = a0;
    b = b0;
    a1 = a;
    b1 = b;
    n = a.length();
}

int get_distance(int x, int y) {
    int ans = 0;
    a = a1;
    b = b1;
    memset(arr, 0, sizeof(arr));

    for (int i = x; i <= y; i++)
            arr[a[i]]++, arr[b[i]]--;

    for (int i = 0; i < 26; i++)
        if (arr[i] != 0) return -1;

    a = a.substr(x, y);
    b = b.substr(x, y);
 //   cout << a <<" ";
    for (int i=0;i<=y-x;i++){
        bool ok=0;
        for (int j=i+1;j<=y-x;j++){
            if (a[i] == b[j] and a[i] != b[i] and a[j] == b[i]){
            ok=1;
            ans++;
            swap(a[i], a[j]);
            }
        }
        if (!ok){
            for (int j=i+1;j<=y-x;j++){
                if (a[i] == b[j] and a[i] != b[i]){
                    ans++;
                    swap(a[i], a[j]);
                }
            }
        }
    }
    return ans;
}

Compilation message (stderr)

dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:24:21: warning: array subscript has type 'char' [-Wchar-subscripts]
   24 |             arr[a[i]]++, arr[b[i]]--;
      |                     ^
dna.cpp:24:34: warning: array subscript has type 'char' [-Wchar-subscripts]
   24 |             arr[a[i]]++, arr[b[i]]--;
      |                                  ^

• Subtask 1: 0 / 21
• Subtask 2: 0 / 22
• Subtask 3: 0 / 13
• Subtask 4: 0 / 28
• Subtask 5: 0 / 16