Submission #427400

#	Time	Username	Problem	Language	Result	Execution time	Memory
427400		igzi	Dojave (COCI17_dojave)	C++17	140 / 140	2127 ms	89476 KiB

dojave

#include <bits/stdc++.h>
#define maxN 1100005

using namespace std;

long long n,m,i,a[maxN],res;
unsigned long long x,b[maxN],s;
map <unsigned long long,int> p[4];

int main() {
    std::ios_base::sync_with_stdio(false);
    mt19937 rnd(time(NULL));
    cin>>m;
    if(m==1) {cout<<2<<endl; return 0;}
    n=pow(2,m);
    for(i=0;i<n;i++){
        cin>>a[i];
        x=rand();
      	x=(x<<32) | rnd();
        b[a[i]]=b[n-1-a[i]]=x;
    }
    s=0;
    for(i=0;i<=n;i++){
        if(p[i%4].find(s)!=p[i%4].end()) res+=p[i%4][s];
        if(p[i%4].find(s)==p[i%4].end()){
            p[i%4][s]=1;
        }
        else p[i%4][s]++;
        s=s xor b[a[i]];
    }
    cout<<(n*(n+1))/2-res<<endl;
    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14