Submission #1001981

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001981		vjudge1	Mutating DNA (IOI21_dna)	C++17	43 / 100	1568 ms	4700 KiB

dna

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define pb push_back
#define pf push_front
#define pi pair<int,int>

string a,b;
const int MAX = 1e5+10;
int n;
 
ll hold[MAX+1];
map<char,int>mtch;
void init(string A, string B){

    a = A;
   
    b = B;
   
    for(int i = 1; i <=a.size(); i++){
        hold[i] =hold[i-1];
       if(A[i-1]!=B[i-1]){
           
            hold[i]++;
        }
    }
}


int get_distance(int x, int y){
//    cout << y << " " << x << endl;
  //  cout << hold[y+1] << " " << hold[x] << endl;
    ll add = hold[y+1]-hold[x] ;
    string k = a.substr(x,y-x+1);
     string h= b.substr(x,y-x+1);
     sort(k.begin(),k.end());
     sort(h.begin(),h.end());
     if(h!=k){
        return -1;
     }
  //  if(add==0) return 0;
    return (add+1)/2;
}


/*

int main(){
    int n,q ;
    cin >> n >> q;
    string a,b;
    cin >> a >>b;
    
    init(a,b);
    int x,y;
    while(q--){
        cin >> x >>y;
        cout << get_distance(x,y)<<endl;
    }
}
*/

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:22:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i = 1; i <=a.size(); i++){
      |                    ~~^~~~~~~~~~

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