Submission #115894

#	Time	Username	Problem	Language	Result	Execution time	Memory
115894		aminra	Broken Device (JOI17_broken_device)	C++14	100 / 100	74 ms	3312 KiB

Anna

#include "Annalib.h"
#include <bits/stdc++.h>
 
using namespace std;
 
void Anna( int N, long long X, int K, int P[] ){
 
    vector <int> arr(N);
 
    int i;
    for(i = 0; i < K; i++) {
        arr[P[i]] = 1;
    }
 
    vector <int> sol(N, 0);
 
    for(int i = 0; i < N; i += 3) {
 
        int a = arr[i], b = arr[i + 1], c = arr[i + 2];
 
        if(a + b + c > 1) {
            continue;
        }
 
        if(a + b + c == 0) {
 
            if((X & 3) == 0) {
                sol[i] = 1;
            }
            else if((X & 3) == 2) {
                sol[i] = sol[i + 2] = 1;
            }
            else if((X & 3) == 1) {
                sol[i + 1] = sol[i + 2] = 1;
            }
            else if((X & 3) == 3) {
                sol[i] = sol[i + 1] = sol[i + 2] = 1;
            }
            X >>= 2;
 
        }
        else {
 
            if(b == 0) {
 
                if(X & 1) {
 
                    if(c == 0) {
                        sol[i + 2] = 1;
                    }
                    else {
                        sol[i] = sol[i + 1] = 1;
                    }
 
                }
                else {
                    sol[i + 1] = 1;
                }
                X >>= 1;
 
            }
            else {
 
                if(X & 1) {
                    sol[i + 2] = 1;
                    X >>= 1;
                }
                else {
 
                    if((X & 3) == 0) {
                        sol[i] = 1;
                    }
                    else if((X & 3) == 2) {
                        sol[i] = sol[i + 2] = 1;
                    }
                    X >>= 2;
                }
 
            }
 
        }
 
    }
 
    for(i = 0; i < N; i++) {
        Set(i, sol[i]);
    }
 
}

Bruno

#include <bits/stdc++.h>
#include "Annalib.h"
using namespace std;
typedef long long ll;
typedef long double ld;
const int MOD = (int)1e9 + 7;
const int MAXN = (int)153;
const int infint = (int)1e9 + 3;
const ll inf = (ll)1e18;
ll Bruno(int N, int A[])
{
	ll ans = 0;
	for (int i = N - 3; i >= 0; i -= 3)
		if(A[i] == 0 && A[i + 1] == 0 && A[i + 2] == 0)
			continue;
		else
		if(A[i] == 1 && A[i + 1] == 0 && A[i + 2] == 0)
			ans = 1LL * ans * 4;
		else
		if(A[i] == 0 && A[i + 1] == 1 && A[i + 2] == 1)
			ans = 1LL * ans * 4 + 1;
		else
		if(A[i] == 1 && A[i + 1] == 0 && A[i + 2] == 1)
			ans = 1LL * ans * 4 + 2;
		else
		if(A[i] == 1 && A[i + 1] == 1 && A[i + 2] == 1)
			ans = 1LL * ans * 4 + 3;
		else
		if(A[i] == 0 && A[i + 1] == 0 && A[i + 2] == 1)
			ans = 1LL * ans * 2 + 1;
		else
		if(A[i] == 0 && A[i + 1] == 1 && A[i + 2] == 0)
			ans = 1LL * ans * 2;
		else
			ans = 1LL * ans * 2 + 1;
	return ans;
}
/*int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
}*/

• Subtask 1: 100 / 100