Submission #1312270

#	Time	Username	Problem	Language	Result	Execution time	Memory
1312270		opeleklanos	Mutating DNA (IOI21_dna)	C++20	21 / 100	18 ms	2352 KiB

dna

#include <iostream>
#include <vector>
#include "dna.h"
using namespace std;

string a;
string b;

#define C first
#define A second.first
#define T second.second

void init(string a1, string b1){
    a = a1;
    b = b1;
}

int get_distance(int x, int y){
    if(x == y){
        if(a[x] == b[x]) return 0;
        else return -1;
    }
    if(y - x == 1){
        if(a[x] == b[x]){
            if(a[y] == b[y]) return 0;
            else return -1;
        }
        if(a[x] == b[y]){
            if(a[y] == b[x]) return 1;
            else return -1;
        }
        return -1;
    }
    if(y-x == 2){
        pair<int, pair<int, int>> o;
        for(int i = x; i<=y; i++){
            if(a[i] == 'C') o.C++;
            if(a[i] == 'A') o.A++;
            if(a[i] == 'T') o.T++;
        }
        for(int i = x; i<=y; i++){
            if(b[i] == 'C') o.C--;
            if(b[i] == 'A') o.A--;
            if(b[i] == 'T') o.T--;
        }
        if(o.C != 0 || o.A != 0 || o.T != 0) return -1;
        int same = 0;
        for(int i = x; i<=y; i++) same += (a[i] == b[i]);
        if(same == 1) return 1;
        if(same == 0) return 2;
        if(same == 3) return 0;
        return -1;
    }
}

Compilation message (stderr)

dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type]
   54 | }
      | ^

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