Submission #1011665

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011665		12345678	Broken Device (JOI17_broken_device)	C++17	85 / 100	29 ms	2752 KiB

Anna

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

using namespace std;

const int nx=150;
mt19937 rng(42);
int f, c[nx];
vector<pair<int, int>> v;

void init()
{
    for (int i=0; i<nx; i++) v.push_back({rng(), i});
    sort(v.begin(), v.end());
    for (int i=0; i<nx; i++) c[i]=v[i].second;
}

void Anna( int N, long long X, int K, int P[] ){
    if (!f) f=1, init();
    vector<int> b(nx);
    //for (int i=0; i<N;i ++) cout<<"perm "<<i<<' '<<c[i]<<'\n';
    for (int i=0; i<K; i++) b[P[i]]=1;
    for (int i=0; i<75; i++)
    {
        if (b[c[2*i]]||b[c[2*i+1]]||X==0) Set(c[2*i], 0), Set(c[2*i+1], 0);
        else Set(c[2*i], ((X%3)+1)/2), Set(c[2*i+1], ((X%3)+1)%2), X/=3;
    }
}

Bruno

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

using namespace std;

#define ll long long

const int kx=60, nxx=150;

mt19937 rng2(42);
int f2, c2[nxx];
vector<pair<int, int>> v2;

void init2()
{
    for (int i=0; i<nxx; i++) v2.push_back({rng2(), i});
    sort(v2.begin(), v2.end());
    for (int i=0; i<nxx; i++) c2[i]=v2[i].second;
}

long long Bruno( int N, int A[] ){
    if (!f2) f2=1, init2(); 
    vector<ll> p(kx);
    ll res=0, cnt=0;
    p[0]=1;
    for (int i=1; i<kx; i++) p[i]=p[i-1]*3;
    for (int i=0; i<75; i++) if (A[c2[2*i]]||A[c2[2*i+1]]) res+=p[cnt]*(A[c2[2*i]]*2+A[c2[2*i+1]]-1),cnt++; 
    return res;
}

• Subtask 1: 85 / 100