oj.uz

Submission #974428

# Submission time Handle Problem Language Result Execution time Memory
974428 2024-05-03T10:26:56 Z rolandpetrean Remittance (JOI19_remittance) C++17
55 / 100
 186 ms 64040 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
#define int ll

#define endl '\n'
#define pb push_back
using pi = array<int, 2>;

const int N = 1e6 + 5, MOD = 1e9 + 7;

int p2[N];
void prec() {
  p2[0] = 1;
  for (int i = 1; i < N; ++i) p2[i] = p2[i - 1] * 2 % MOD;
}
int binpow(int a, int b) {
  int res = 1;
  while (b) {
    if (b & 1) res = res * a % MOD;
    a = a * a % MOD;
    b >>= 1;
  }
  return res;
}
int modinv(int n) {
  return binpow(n, MOD - 2);
}

int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  
  prec();
  
  int n;
  cin >> n;
  
  vector<int> a(n), b(n), c(n);
  for (int i = 0; i < n; ++i) {
    cin >> a[i] >> b[i];
    c[i] = b[i] - a[i];
  }
  
  assert(n <= 20);
  
  vector<int> in(n);
  for (int i = 0; i < n; ++i) {
    in[0] = (in[0] - p2[i] * c[i] % MOD + MOD) % MOD;
  }
  in[0] = (in[0] * modinv(p2[n] - 1) % MOD + MOD) % MOD;
  
  for (int i = 1; i < n; ++i) {
    int x = in[i - 1] - c[i - 1];
    if (x % 2 != 0) {
      cout << "No";
      return 0;
    }
    in[i] = x / 2;
  }
  
  for (int i = 0; i < n; ++i) {
    if (in[i] < 0) {
      cout << "No";
      return 0;
    }
  }
  
  bool pushed = true;
  while (pushed) {
    pushed = false;
    for (int i = 0; i < n; ++i) {
      int j = (i + 1) % n;
      
      int push = min(in[j], a[i] / 2);
      a[i] -= 2 * push;
      in[j] -= push;
      a[j] += push;

      if (push != 0) pushed = true;
    }
  }
  
  for (int i = 0; i < n; ++i) {
    if (in[i] != 0) {
      cout << "No";
      return 0;
    }
  }
  
  cout << "Yes";
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8028 KB Output is correct
2 Correct 5 ms 8028 KB Output is correct
3 Correct 5 ms 8028 KB Output is correct
4 Correct 5 ms 8068 KB Output is correct
5 Correct 5 ms 8024 KB Output is correct
6 Correct 5 ms 8028 KB Output is correct
7 Correct 5 ms 8024 KB Output is correct
8 Correct 5 ms 8028 KB Output is correct
9 Correct 5 ms 8072 KB Output is correct
10 Correct 6 ms 8028 KB Output is correct
11 Correct 5 ms 8028 KB Output is correct
12 Correct 5 ms 8284 KB Output is correct
13 Correct 5 ms 8068 KB Output is correct
14 Correct 5 ms 8284 KB Output is correct
15 Correct 5 ms 8028 KB Output is correct
16 Correct 5 ms 8028 KB Output is correct
17 Correct 5 ms 8112 KB Output is correct
18 Correct 5 ms 8028 KB Output is correct
19 Correct 6 ms 8072 KB Output is correct
20 Correct 5 ms 8028 KB Output is correct
21 Correct 5 ms 8028 KB Output is correct
22 Correct 5 ms 8028 KB Output is correct
23 Correct 5 ms 8536 KB Output is correct
24 Correct 5 ms 8280 KB Output is correct
25 Correct 6 ms 8024 KB Output is correct
26 Correct 6 ms 8028 KB Output is correct
27 Correct 6 ms 8028 KB Output is correct
28 Correct 5 ms 8068 KB Output is correct
29 Correct 6 ms 8028 KB Output is correct
30 Correct 5 ms 8064 KB Output is correct
31 Correct 5 ms 8028 KB Output is correct
32 Correct 5 ms 8028 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8028 KB Output is correct
2 Correct 5 ms 8028 KB Output is correct
3 Correct 5 ms 8028 KB Output is correct
4 Correct 5 ms 8068 KB Output is correct
5 Correct 5 ms 8024 KB Output is correct
6 Correct 5 ms 8028 KB Output is correct
7 Correct 5 ms 8024 KB Output is correct
8 Correct 5 ms 8028 KB Output is correct
9 Correct 5 ms 8072 KB Output is correct
10 Correct 6 ms 8028 KB Output is correct
11 Correct 5 ms 8028 KB Output is correct
12 Correct 5 ms 8284 KB Output is correct
13 Correct 5 ms 8068 KB Output is correct
14 Correct 5 ms 8284 KB Output is correct
15 Correct 5 ms 8028 KB Output is correct
16 Correct 5 ms 8028 KB Output is correct
17 Correct 5 ms 8112 KB Output is correct
18 Correct 5 ms 8028 KB Output is correct
19 Correct 6 ms 8072 KB Output is correct
20 Correct 5 ms 8028 KB Output is correct
21 Correct 5 ms 8028 KB Output is correct
22 Correct 5 ms 8028 KB Output is correct
23 Correct 5 ms 8536 KB Output is correct
24 Correct 5 ms 8280 KB Output is correct
25 Correct 6 ms 8024 KB Output is correct
26 Correct 6 ms 8028 KB Output is correct
27 Correct 6 ms 8028 KB Output is correct
28 Correct 5 ms 8068 KB Output is correct
29 Correct 6 ms 8028 KB Output is correct
30 Correct 5 ms 8064 KB Output is correct
31 Correct 5 ms 8028 KB Output is correct
32 Correct 5 ms 8028 KB Output is correct
33 Correct 5 ms 8028 KB Output is correct
34 Correct 6 ms 8284 KB Output is correct
35 Correct 5 ms 8028 KB Output is correct
36 Correct 5 ms 8232 KB Output is correct
37 Correct 6 ms 8028 KB Output is correct
38 Correct 5 ms 8028 KB Output is correct
39 Correct 5 ms 8028 KB Output is correct
40 Correct 5 ms 8284 KB Output is correct
41 Correct 5 ms 8028 KB Output is correct
42 Correct 6 ms 8028 KB Output is correct
43 Correct 6 ms 8028 KB Output is correct
44 Correct 6 ms 8272 KB Output is correct
45 Correct 5 ms 8284 KB Output is correct
46 Correct 5 ms 8028 KB Output is correct
47 Correct 5 ms 8028 KB Output is correct
48 Correct 5 ms 8064 KB Output is correct
49 Correct 5 ms 8284 KB Output is correct
50 Correct 6 ms 8028 KB Output is correct
51 Correct 5 ms 8024 KB Output is correct
52 Correct 5 ms 8028 KB Output is correct
53 Correct 5 ms 8064 KB Output is correct
54 Correct 5 ms 8028 KB Output is correct
55 Correct 6 ms 8064 KB Output is correct
56 Correct 5 ms 8024 KB Output is correct
57 Correct 5 ms 8028 KB Output is correct
58 Correct 5 ms 8028 KB Output is correct
59 Correct 5 ms 8028 KB Output is correct
60 Correct 6 ms 8284 KB Output is correct
61 Correct 6 ms 8028 KB Output is correct
62 Correct 5 ms 8028 KB Output is correct

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 8028 KB Output is correct
2 Correct 5 ms 8028 KB Output is correct
3 Correct 5 ms 8028 KB Output is correct
4 Correct 5 ms 8068 KB Output is correct
5 Correct 5 ms 8024 KB Output is correct
6 Correct 5 ms 8028 KB Output is correct
7 Correct 5 ms 8024 KB Output is correct
8 Correct 5 ms 8028 KB Output is correct
9 Correct 5 ms 8072 KB Output is correct
10 Correct 6 ms 8028 KB Output is correct
11 Correct 5 ms 8028 KB Output is correct
12 Correct 5 ms 8284 KB Output is correct
13 Correct 5 ms 8068 KB Output is correct
14 Correct 5 ms 8284 KB Output is correct
15 Correct 5 ms 8028 KB Output is correct
16 Correct 5 ms 8028 KB Output is correct
17 Correct 5 ms 8112 KB Output is correct
18 Correct 5 ms 8028 KB Output is correct
19 Correct 6 ms 8072 KB Output is correct
20 Correct 5 ms 8028 KB Output is correct
21 Correct 5 ms 8028 KB Output is correct
22 Correct 5 ms 8028 KB Output is correct
23 Correct 5 ms 8536 KB Output is correct
24 Correct 5 ms 8280 KB Output is correct
25 Correct 6 ms 8024 KB Output is correct
26 Correct 6 ms 8028 KB Output is correct
27 Correct 6 ms 8028 KB Output is correct
28 Correct 5 ms 8068 KB Output is correct
29 Correct 6 ms 8028 KB Output is correct
30 Correct 5 ms 8064 KB Output is correct
31 Correct 5 ms 8028 KB Output is correct
32 Correct 5 ms 8028 KB Output is correct
33 Correct 5 ms 8028 KB Output is correct
34 Correct 6 ms 8284 KB Output is correct
35 Correct 5 ms 8028 KB Output is correct
36 Correct 5 ms 8232 KB Output is correct
37 Correct 6 ms 8028 KB Output is correct
38 Correct 5 ms 8028 KB Output is correct
39 Correct 5 ms 8028 KB Output is correct
40 Correct 5 ms 8284 KB Output is correct
41 Correct 5 ms 8028 KB Output is correct
42 Correct 6 ms 8028 KB Output is correct
43 Correct 6 ms 8028 KB Output is correct
44 Correct 6 ms 8272 KB Output is correct
45 Correct 5 ms 8284 KB Output is correct
46 Correct 5 ms 8028 KB Output is correct
47 Correct 5 ms 8028 KB Output is correct
48 Correct 5 ms 8064 KB Output is correct
49 Correct 5 ms 8284 KB Output is correct
50 Correct 6 ms 8028 KB Output is correct
51 Correct 5 ms 8024 KB Output is correct
52 Correct 5 ms 8028 KB Output is correct
53 Correct 5 ms 8064 KB Output is correct
54 Correct 5 ms 8028 KB Output is correct
55 Correct 6 ms 8064 KB Output is correct
56 Correct 5 ms 8024 KB Output is correct
57 Correct 5 ms 8028 KB Output is correct
58 Correct 5 ms 8028 KB Output is correct
59 Correct 5 ms 8028 KB Output is correct
60 Correct 6 ms 8284 KB Output is correct
61 Correct 6 ms 8028 KB Output is correct
62 Correct 5 ms 8028 KB Output is correct
63 Runtime error 186 ms 64040 KB Execution killed with signal 6
64 Halted 0 ms 0 KB -