Submission #915222

#	Time	Username	Problem	Language	Result	Execution time	Memory
915222		Namkhing	Digital Circuit (IOI22_circuit)	C++17	Compilation error	0 ms	0 KiB

circuit

#include "circuit.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

const int Max = 2e5 + 1;
const int Mod = 1e9 + 2022;
ll n, m, dp[Max][2];

void update(int node, int left, int right, int idx) {
    if (left == idx && right == idx) {
        swap(dp[node][0], dp[node][1]);
        return;
    }

    int mid = (left + right) / 2;

    int l = node * 2 + 1;
    int r = node * 2 + 2;

    if (idx <= mid) {
        update(l, left, mid, idx);
    }
    else {
        update(r, mid + 1, right, idx);
    }

    dp[node][0] = dp[l][1] * dp[r][0] + dp[l][0] * dp[r][1] + 2 * dp[l][0] * dp[r][0];
    dp[node][1] = dp[l][1] * dp[r][0] + dp[l][0] * dp[r][1] + 2 * dp[l][1] * dp[r][1];

    dp[node][0] %= Mod;
    dp[node][1] %= Mod;
}

void build(int node, int left, int right, vector<int>& a) {
    if (left == right) {
        dp[node][A[left]] = 1;
        return;
    }

    int mid = (left + right) / 2;

    int l = node * 2 + 1;
    int r = node * 2 + 2;

    build(l, left, mid, a);
    build(r, mid + 1, right, a);

    dp[node][0] = dp[l][1] * dp[r][0] + dp[l][0] * dp[r][1] + 2 * dp[l][0] * dp[r][0];
    dp[node][1] = dp[l][1] * dp[r][0] + dp[l][0] * dp[r][1] + 2 * dp[l][1] * dp[r][1];

    dp[node][0] %= Mod;
    dp[node][1] %= Mod;
}

void init(int N, int M, vector<int> P, vector<int> A) {
    n = N, m = M;
    build(0, 0, M - 1, A);
}

int count_ways(int L, int R) {
    update(0, 0, m - 1, L - n);
    return dp[0][1]; 
}

Compilation message (stderr)

circuit.cpp: In function 'void build(int, int, int, std::vector<int>&)':
circuit.cpp:38:18: error: 'A' was not declared in this scope
   38 |         dp[node][A[left]] = 1;
      |                  ^