Submission #610838

#	Time	Username	Problem	Language	Result	Execution time	Memory
610838		Ozy	Mutating DNA (IOI21_dna)	C++17	0 / 100	36 ms	10608 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define debug(a) cout << #a << " = " << a << endl
#define debugsl(a) cout << #a << " = " << a << ", "
#define rep(i,a,b) for (int i = (a); i <= (b); i++)
#define repa(i,a,b) for (int i = (a); i >= (b); i--)

#define MAX 100000

lli acu[MAX+2][3][3];
lli act[3][3];

void init(std::string a, std::string b) {
    lli n = a.size();
    lli x,y;
    rep(i,0,n-1) {

        if (a[i] == 'A') x = 0;
        else if (a[i] == 'T') x = 1;
        else x = 2;

        if (b[i] == 'A') y = 0;
        else if (b[i] == 'T') y = 1;
        else y = 2;

        rep(e,0,2) rep(j,0,2) acu[i][e][j] = acu[i-1][e][j];
        acu[i][x][y]++;
    }
}

int get_distance(int x, int y) {

	rep(i,0,2) rep(j,0,2) act[i][j] = acu[y][i][j];
	rep(i,0,2) rep(j,0,2) act[i][j] -= acu[x][i][j];

	lli a,b,c,res = 0;
	res += min(act[0][2], act[2][0]);
	a = abs(act[0][2] - act[2][0]);

	res += min(act[0][1], act[1][0]);
	b = abs(act[0][1] - act[1][0]);

	res += min(act[1][2], act[2][1]);
	c = abs(act[1][2] - act[2][1]);

	if (a == b && b == c) res += a*2;
	else return -1;
	return res;
}

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