Submission #969281

#	Time	Username	Problem	Language	Result	Execution time	Memory
969281		andro	Mutating DNA (IOI21_dna)	C++17	0 / 100	41 ms	2620 KiB

dna

#include <bits/stdc++.h>

#include "dna.h"

using namespace std;

string A, B;

void init(std::string a, std::string b) {
    A = a;
    B = b;
}

int get_distance(int x, int y) {
    map<char,int> M, M1;
    for(int i = x; i <= y; i++) {
        M[A[i]] += 1;
        M1[B[i]] += 1;
    }
    if(M['A'] != M1['A'] || M['T'] != M1['T'] || M['C'] != M1['C']) {
        return - 1;
    }
    int ans = 0;
    for(int i = x; i <= y; i++) {
        if(A[i] == B[i]) {
            continue;
        }
        int ok = 0;
        for(int j = i + 1; j <= y; j++) {
            if(A[i] == B[j] && A[j] == B[i]) {
                swap(A[i], A[j]);
                ok = 1;
                break;
            }
        }
        ans += 1;
        if(! ok) {
            for(int j = i + 1; j <= y; j++) {
                if(B[i] == A[j]) {
                    swap(A[i], A[j]);
                }
            }
        }
    }
    return ans;
}
/*
int main() {
    init("ATACAT", "ACTATA");
    cout << get_distance(0, 5);
}*/

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