Submission #481053

#	Time	Username	Problem	Language	Result	Execution time	Memory
481053		MasterTaster	Mutating DNA (IOI21_dna)	C++17	35 / 100	44 ms	7200 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>

#define ll long long
#define pb push_back
#define pii pair<int, int>
#define xx first
#define yy second

using namespace std;

///A -> x
///T -> y
///C -> z

int n, ax[100010], ay[100010], az[100010], bx[100010], by[100010], bz[100010], xy[100010], xz[100010], yx[100010], yz[100010], zx[100010], zy[100010];

void init(std::string a, std::string b) {
    n=a.size();
    a='J'+a; b='J'+b;
    for (int i=1; i<=n; i++)
    {
        if (i!=1) { ax[i]=ax[i-1]; ay[i]=ay[i-1]; az[i]=az[i-1]; }
        if (a[i]=='A') ax[i]++; else if (a[i]=='T') { ay[i]++; } else az[i]++;
    }
    for (int i=1; i<=n; i++)
    {
        if (i!=1) { bx[i]=bx[i-1]; by[i]=by[i-1]; bz[i]=bz[i-1]; }
        if (b[i]=='A') bx[i]++; else if (b[i]=='T') { by[i]++; } else bz[i]++;
    }

    for (int i=1; i<=n; i++)
    {
        if (i!=1) { xy[i]=xy[i-1]; xz[i]=xz[i-1]; yx[i]=yx[i-1]; yz[i]=yz[i-1]; zx[i]=zx[i-1]; zy[i]=zy[i-1]; }
        if (a[i]=='A' && b[i]=='T') xy[i]++;
        if (a[i]=='A' && b[i]=='C') xy[i]++;
        if (a[i]=='T' && b[i]=='A') yx[i]++;
        if (a[i]=='T' && b[i]=='C') yz[i]++;
        if (a[i]=='C' && b[i]=='A') zx[i]++;
        if (a[i]=='C' && b[i]=='T') zy[i]++;
    }


}

int get_distance(int l, int r) {
    ll ress=0;
    int kolko1=0, kolko2=0, kolkoxy=0, kolkoxz=0, kolkoyx=0, kolkoyz=0, kolkozx=0, kolkozy=0;
    l++; r++;

    kolko1=ax[r]-ax[l-1];
    kolko2=bx[r]-bx[l-1];
    if (kolko1!=kolko2) return -1;

    kolko1=ay[r]-ay[l-1];
    kolko2=by[r]-by[l-1];
    if (kolko1!=kolko2) return -1;

    kolko1=az[r]-az[l-1];
    kolko2=bz[r]-bz[l-1];
    if (kolko1!=kolko2) return -1;

    ///imam resenje

    kolkoxy=xy[r]-xy[l-1];
    kolkoyx=yx[r]-yx[l-1];

    kolkoxz=xz[r]-xz[l-1];
    kolkozx=zx[r]-zx[l-1];

    kolkoyz=yz[r]-yz[l-1];
    kolkozy=zy[r]-zy[l-1];

    ress+=min(kolkoxy, kolkoyx)+min(kolkoyz, kolkozy)+min(kolkoxz, kolkozx);

    kolkoxy=max(kolkoxy, kolkoyx)-min(kolkoxy, kolkoyx);
    kolkoyz=max(kolkoyz, kolkozy)-min(kolkoyz, kolkozy);
    kolkozx=max(kolkozx, kolkoxz)-min(kolkozx, kolkoxz);

    ress+=(((kolkoxy+kolkoyz+kolkozx)/3)*2);

    return ress;
}

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