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Submission #630102

# Submission time Handle Problem Language Result Execution time Memory
630102 2022-08-15T16:58:57 Z flashmt Digital Circuit (IOI22_circuit) C++17
2 / 100
 830 ms 5088 KB 
#include <bits/stdc++.h>
#include "circuit.h"
using namespace std;
const int BASE = 1e9 + 2022;
const int N = 100100;

int n, m;
vector<int> a[N];
vector<int> states;
vector<long long> coef;
long long ans;

void dfs(int x)
{
  vector<long long> prefix(size(a[x]));
  for (int i = 0; i < size(a[x]); i++)
  {
    int y = a[x][i];
    prefix[i] = max(1, int(size(a[y])));
    if (i)
      prefix[i] = prefix[i] * prefix[i - 1] % BASE;
  }

  long long suffix = 1;
  for (int i = int(size(a[x])) - 1; i >= 0; i--)
  {
    int y = a[x][i];
    coef[y] = suffix;
    if (i)
      coef[y] = coef[y] * prefix[i - 1] % BASE;
    suffix *= max(1, int(size(a[y])));
    suffix %= BASE;
  }

  for (int y : a[x])
  {
    coef[y] = coef[y] * coef[x] % BASE;
    dfs(y);
  }
}

void init(int N, int M, vector<int> P, vector<int> A)
{
  n = N;
  m = M;
  for (int i = 1; i < n + m; i++)
    a[P[i]].push_back(i);
  states = A;
  coef.assign(n + m, 1);
  dfs(0);
  for (int i = 0; i < m; i++)
    if (states[i])
      ans = (ans + coef[n + i]) % BASE;
}

int count_ways(int L, int R)
{
  for (int i = L; i <= R; i++)
  {
    states[i - n] ^= 1;
    if (states[i - n]) ans = (ans + coef[i]) % BASE;
    else ans = (ans - coef[i] + BASE) % BASE;
  }
  return ans;
}

Compilation message

circuit.cpp: In function 'void dfs(int)':
circuit.cpp:16:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |   for (int i = 0; i < size(a[x]); i++)
      |                   ~~^~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2640 KB Output is correct
2 Correct 1 ms 2640 KB Output is correct
3 Correct 2 ms 2640 KB Output is correct
4 Correct 2 ms 2640 KB Output is correct
5 Correct 1 ms 2640 KB Output is correct
6 Correct 2 ms 2640 KB Output is correct
7 Correct 2 ms 2640 KB Output is correct
8 Correct 2 ms 2672 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2640 KB Output is correct
2 Incorrect 2 ms 2672 KB 1st lines differ - on the 1st token, expected: '52130940', found: '16384'
3 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2640 KB Output is correct
2 Correct 1 ms 2640 KB Output is correct
3 Correct 2 ms 2640 KB Output is correct
4 Correct 2 ms 2640 KB Output is correct
5 Correct 1 ms 2640 KB Output is correct
6 Correct 2 ms 2640 KB Output is correct
7 Correct 2 ms 2640 KB Output is correct
8 Correct 2 ms 2672 KB Output is correct
9 Correct 1 ms 2640 KB Output is correct
10 Incorrect 2 ms 2672 KB 1st lines differ - on the 1st token, expected: '52130940', found: '16384'
11 Halted 0 ms 0 KB -

Subtask #4
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 830 ms 5088 KB 1st lines differ - on the 1st token, expected: '431985922', found: '268730368'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 830 ms 5088 KB 1st lines differ - on the 1st token, expected: '431985922', found: '268730368'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2640 KB Output is correct
2 Incorrect 2 ms 2672 KB 1st lines differ - on the 1st token, expected: '52130940', found: '16384'
3 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2640 KB Output is correct
2 Correct 1 ms 2640 KB Output is correct
3 Correct 2 ms 2640 KB Output is correct
4 Correct 2 ms 2640 KB Output is correct
5 Correct 1 ms 2640 KB Output is correct
6 Correct 2 ms 2640 KB Output is correct
7 Correct 2 ms 2640 KB Output is correct
8 Correct 2 ms 2672 KB Output is correct
9 Correct 1 ms 2640 KB Output is correct
10 Incorrect 2 ms 2672 KB 1st lines differ - on the 1st token, expected: '52130940', found: '16384'
11 Halted 0 ms 0 KB -

Subtask #8
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2640 KB Output is correct
2 Correct 1 ms 2640 KB Output is correct
3 Correct 2 ms 2640 KB Output is correct
4 Correct 2 ms 2640 KB Output is correct
5 Correct 1 ms 2640 KB Output is correct
6 Correct 2 ms 2640 KB Output is correct
7 Correct 2 ms 2640 KB Output is correct
8 Correct 2 ms 2672 KB Output is correct
9 Correct 1 ms 2640 KB Output is correct
10 Incorrect 2 ms 2672 KB 1st lines differ - on the 1st token, expected: '52130940', found: '16384'
11 Halted 0 ms 0 KB -