oj.uz

Submission #684444

# Submission time Handle Problem Language Result Execution time Memory
684444 2023-01-21T09:15:44 Z peijar Crossing (JOI21_crossing) C++17
26 / 100
 384 ms 53720 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

string to_string(string s) { return s; }
template <typename T> string to_string(T v) {
  bool first = true;
  string res = "[";
  for (const auto &x : v) {
    if (!first)
      res += ", ";
    first = false;
    res += to_string(x);
  }
  res += "]";
  return res;
}

void dbg_out() { cout << endl; }
template <typename Head, typename... Tail> void dbg_out(Head H, Tail... T) {
  cout << ' ' << to_string(H);
  dbg_out(T...);
}

#ifdef DEBUG
#define dbg(...) cout << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif

const int MOD1 = 1e9 + 7, MOD2 = 1e9 + 9;

using H = pair<int, int>;

H add(H a, H b) {
  a.first += b.first;
  if (a.first >= MOD1)
    a.first -= MOD1;
  a.second += b.second;
  if (a.second >= MOD2)
    a.second -= MOD2;
  return a;
}

H sub(H a, H b) {
  a.first -= b.first;
  a.second -= b.second;
  if (a.first < 0)
    a.first += MOD1;
  if (a.second < 0)
    a.second += MOD2;
  return a;
}

H mult(H a, H b) {
  return pair(a.first * b.first % MOD1, a.second * b.second % MOD2);
}

const int MAXN = 1e6;

const int BASE = 315;

H pows[MAXN];
int iDeb[MAXN], iFin[MAXN];
H sumPows[MAXN], rangeHash[MAXN];
int lazy[MAXN];

void pull(int node) {
  sumPows[node] = add(sumPows[2 * node], sumPows[2 * node + 1]);
  rangeHash[node] = add(rangeHash[2 * node], rangeHash[2 * node + 1]);
}

void build(int node, int l, int r) {
  iDeb[node] = l, iFin[node] = r;
  lazy[node] = -1;

  if (l == r) {
    sumPows[node] = pows[l];
    return;
  }
  int m = (l + r) / 2;
  build(2 * node, l, m);
  build(2 * node + 1, m + 1, r);
  pull(node);
}

void push(int node) {
  if (lazy[node] == -1)
    return;
  int x = lazy[node];
  lazy[node] = -1;

  rangeHash[node] = mult(pair(x, x), sumPows[node]);
  lazy[2 * node] = lazy[2 * node + 1] = x;
}

void rangeSet(int node, int l, int r, int x) {
  push(node);
  if (l > iFin[node] or r < iDeb[node])
    return;
  if (l <= iDeb[node] and iFin[node] <= r) {
    lazy[node] = x;
    push(node);
    return;
  }

  rangeSet(2 * node, l, r, x);
  rangeSet(2 * node + 1, l, r, x);
  pull(node);
}

int charToint(char c) {
  if (c == 'J')
    return 0;
  if (c == 'O')
    return 1;
  return 2;
}

signed main(void) {
  ios_base::sync_with_stdio(false);
  cin.tie(0);

  pows[0] = pair(1, 1);
  for (int i = 1; i < MAXN; ++i)
    pows[i] = mult(pows[i - 1], pair(BASE, BASE));

  int N;
  cin >> N;
  string s1, s2, s3;
  cin >> s1 >> s2 >> s3;

  build(1, 0, N - 1);
  set<H> goodHash;

  for (int n1 = 0; n1 < 3; ++n1)
    for (int n2 = 0; n2 < 3; ++n2)
      for (int n3 = 0; n3 < 3; ++n3)
        if ((n1 + n2 + n3) % 3 == 1) {
          H h(0, 0);
          for (int i = 0; i < N; ++i) {
            int x = (n1 * charToint(s1[i]) + n2 * charToint(s2[i]) +
                     n3 * charToint(s3[i])) %
                    3;
            h = add(h, mult(pair(x, x), pows[i]));
          }
          goodHash.insert(h);
        }

  int Q;
  cin >> Q;
  string T0;
  cin >> T0;
  for (int i = 0; i < N; ++i)
    rangeSet(1, i, i, charToint(T0[i]));

  cout << (goodHash.count(rangeHash[1]) ? "Yes" : "No") << '\n';

  for (int i = 0; i < Q; ++i) {
    int L, R;
    char c;
    cin >> L >> R >> c;
    rangeSet(1, L - 1, R - 1, charToint(c));
    cout << (goodHash.count(rangeHash[1]) ? "Yes" : "No") << '\n';
  }
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 17908 KB Output is correct
2 Correct 85 ms 18112 KB Output is correct
3 Correct 86 ms 17964 KB Output is correct
4 Correct 78 ms 18052 KB Output is correct
5 Correct 76 ms 18072 KB Output is correct
6 Correct 79 ms 17972 KB Output is correct
7 Correct 79 ms 18064 KB Output is correct
8 Correct 85 ms 18108 KB Output is correct
9 Correct 79 ms 18120 KB Output is correct
10 Correct 79 ms 18092 KB Output is correct
11 Correct 83 ms 18112 KB Output is correct
12 Correct 87 ms 18192 KB Output is correct
13 Correct 80 ms 18076 KB Output is correct
14 Correct 92 ms 18144 KB Output is correct
15 Correct 82 ms 18096 KB Output is correct
16 Correct 83 ms 18124 KB Output is correct
17 Correct 80 ms 18052 KB Output is correct
18 Correct 84 ms 18032 KB Output is correct

Subtask #2
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 17908 KB Output is correct
2 Correct 85 ms 18112 KB Output is correct
3 Correct 86 ms 17964 KB Output is correct
4 Correct 78 ms 18052 KB Output is correct
5 Correct 76 ms 18072 KB Output is correct
6 Correct 79 ms 17972 KB Output is correct
7 Correct 79 ms 18064 KB Output is correct
8 Correct 85 ms 18108 KB Output is correct
9 Correct 79 ms 18120 KB Output is correct
10 Correct 79 ms 18092 KB Output is correct
11 Correct 83 ms 18112 KB Output is correct
12 Correct 87 ms 18192 KB Output is correct
13 Correct 80 ms 18076 KB Output is correct
14 Correct 92 ms 18144 KB Output is correct
15 Correct 82 ms 18096 KB Output is correct
16 Correct 83 ms 18124 KB Output is correct
17 Correct 80 ms 18052 KB Output is correct
18 Correct 84 ms 18032 KB Output is correct
19 Correct 384 ms 53720 KB Output is correct
20 Correct 336 ms 53448 KB Output is correct
21 Incorrect 277 ms 53316 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 17908 KB Output is correct
2 Correct 85 ms 18112 KB Output is correct
3 Correct 86 ms 17964 KB Output is correct
4 Correct 78 ms 18052 KB Output is correct
5 Correct 76 ms 18072 KB Output is correct
6 Correct 79 ms 17972 KB Output is correct
7 Correct 79 ms 18064 KB Output is correct
8 Correct 85 ms 18108 KB Output is correct
9 Correct 79 ms 18120 KB Output is correct
10 Correct 79 ms 18092 KB Output is correct
11 Correct 83 ms 18112 KB Output is correct
12 Correct 87 ms 18192 KB Output is correct
13 Correct 80 ms 18076 KB Output is correct
14 Correct 92 ms 18144 KB Output is correct
15 Correct 82 ms 18096 KB Output is correct
16 Correct 83 ms 18124 KB Output is correct
17 Correct 80 ms 18052 KB Output is correct
18 Correct 84 ms 18032 KB Output is correct
19 Correct 85 ms 17972 KB Output is correct
20 Correct 94 ms 17996 KB Output is correct
21 Correct 85 ms 18048 KB Output is correct
22 Correct 70 ms 17880 KB Output is correct
23 Correct 83 ms 18120 KB Output is correct
24 Correct 86 ms 18004 KB Output is correct
25 Correct 83 ms 18124 KB Output is correct
26 Correct 79 ms 18000 KB Output is correct
27 Correct 84 ms 18232 KB Output is correct
28 Correct 74 ms 17908 KB Output is correct
29 Correct 81 ms 18124 KB Output is correct
30 Correct 74 ms 17888 KB Output is correct
31 Correct 84 ms 18160 KB Output is correct
32 Correct 82 ms 18060 KB Output is correct
33 Correct 83 ms 18064 KB Output is correct
34 Correct 75 ms 17928 KB Output is correct
35 Correct 80 ms 18144 KB Output is correct
36 Correct 83 ms 18056 KB Output is correct
37 Correct 83 ms 18124 KB Output is correct
38 Correct 82 ms 18192 KB Output is correct
39 Correct 79 ms 18132 KB Output is correct
40 Correct 82 ms 18036 KB Output is correct
41 Correct 87 ms 18120 KB Output is correct
42 Correct 84 ms 18116 KB Output is correct
43 Correct 79 ms 18012 KB Output is correct
44 Correct 100 ms 18124 KB Output is correct

Subtask #4
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 17908 KB Output is correct
2 Correct 85 ms 18112 KB Output is correct
3 Correct 86 ms 17964 KB Output is correct
4 Correct 78 ms 18052 KB Output is correct
5 Correct 76 ms 18072 KB Output is correct
6 Correct 79 ms 17972 KB Output is correct
7 Correct 79 ms 18064 KB Output is correct
8 Correct 85 ms 18108 KB Output is correct
9 Correct 79 ms 18120 KB Output is correct
10 Correct 79 ms 18092 KB Output is correct
11 Correct 83 ms 18112 KB Output is correct
12 Correct 87 ms 18192 KB Output is correct
13 Correct 80 ms 18076 KB Output is correct
14 Correct 92 ms 18144 KB Output is correct
15 Correct 82 ms 18096 KB Output is correct
16 Correct 83 ms 18124 KB Output is correct
17 Correct 80 ms 18052 KB Output is correct
18 Correct 84 ms 18032 KB Output is correct
19 Correct 384 ms 53720 KB Output is correct
20 Correct 336 ms 53448 KB Output is correct
21 Incorrect 277 ms 53316 KB Output isn't correct
22 Halted 0 ms 0 KB -