Submission #922664

#	Time	Username	Problem	Language	Result	Execution time	Memory
922664		tvladm2009	Mutating DNA (IOI21_dna)	C++17	0 / 100	44 ms	22804 KiB

dna

#include "dna.h"
#include <iostream>
#include <complex>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <numeric>
#include <cstring>
#include <ctime>
#include <cstdlib>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <cmath>
#include <bitset>
#include <cassert>
#include <queue>
#include <stack>
#include <deque>
#include <random>

using namespace std;
template<typename T1, typename T2> inline void chkmin(T1 &a, T2 b) {if (a > b) a = b;}
template<typename T1, typename T2> inline void chkmax(T1 &a, T2 b) {if (a < b) a = b;}
#define files(FILENAME) read(FILENAME); write(FILENAME)
#define read(FILENAME) freopen((FILENAME + ".in").c_str(), "r", stdin)
#define write(FILENAME) freopen((FILENAME + ".out").c_str(), "w", stdout)
#define all(c) (c).begin(), (c).end()
#define sz(c) (int)(c).size()
#define left left228
#define right right228
#define y1 y1228
#define mp make_pair
#define pb push_back
#define y2 y2228
#define rank rank228
using ll = long long;
using ld = long double;
const string FILENAME = "input";
const int MAXN = 100228;

int cntA[MAXN][26], cntB[MAXN][26];
int diff[MAXN];

void init(string a, string b) {
	int n = sz(a);
	for (int i = 1; i <= n; i++) {
		for (int j = 0; j < 26; j++) {
			cntA[i][j] = cntA[i - 1][j];
		}
		cntA[i][a[i - 1]  - 'a']++;
	}
	for (int i = 1; i <= n; i++) {
		for (int j = 0; j < 26; j++) {
			cntB[i][j] = cntB[i - 1][j];
		}
		cntB[i][b[i - 1] - 'a']++;
	}
	for (int i = 1; i <= n; i++) {
		diff[i] = diff[i - 1] + (a[i - 1] != b[i - 1]);
	}
}

int get_distance(int l, int r) {
	for (int j = 0; j < 26; j++) {
		if (cntA[r][j] - cntA[l - 1][j] != cntB[r][j] - cntB[l - 1][j]) {
			return -1;
		}
	}
	int x = diff[r] - diff[l - 1];
	return (x + 1) / 2;
}

/**
int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	//read(FILENAME);
	
	return 0;
}
**/

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