Submission #1129465

#	Time	Username	Problem	Language	Result	Execution time	Memory
1129465		ozner77	Mutating DNA (IOI21_dna)	C++17	0 / 100	29 ms	2368 KiB

dna

#define ll long long
#include <bits/stdc++.h>
using namespace std;
int n;
string a1,b1;
void init(string a,string b){
    a1=a;b1=b;
    n=a.size(); 
}
int get_distance(int x, int y){
    x-=1;
    y-=1;
    if(x==y){
        return 0;
    }
    map<int,int> M;
    map<int,int> M1;
    int res=0;
 for(int i=x;i<=y;i++){
        M[a1[i]]++;
        M1[b1[i]]++;
        if(a1[i]!=b1[i]){
            res++;
        }
    }
    bool com=false;
    for(auto x:M){
        if(x.second==M1[x.first]){
            continue;
        }else{
            return -1;
        }
    }
    return res/2;
}

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