Submission #1001958

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001958		hacizadal	Mutating DNA (IOI21_dna)	C++17	43 / 100	1549 ms	4724 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
#define pll pair<ll, ll>
string s, t;
ll p[100005];


void init(std::string a, std::string b) {
    s = a;
    t = b;
    for (ll i = 0; i<s.length(); i++){
        p[i+1] = p[i];
        if (s[i] != t[i]) p[i+1]++;
    }
}

int get_distance(int x, int y) {
	string k = s.substr(x, y-x+1);
	string g = t.substr(x, y-x+1);
	string a = k;
	string b = g;
	sort(a.begin(), a.end());
	sort(b.begin(), b.end());
	if (a != b){
        return -1;
	}
	if (k == g){
        return 0;
	}
	if (y - x <= 2){
        if (k[1] == g[1] or k[0] == g[0] or k[2] == g[2]){
            return 1;
        }
        else {
            return 2;
        }
	}
	ll cnt = p[y+1] - p[x];
	cnt /= 2;
	return cnt;
}

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:14:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (ll i = 0; i<s.length(); i++){
      |                    ~^~~~~~~~~~~

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