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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#382319#7782. Ursa MinornguyentunglamWA 340ms488956kbC++173.6kb2024-04-08 12:20:282024-04-08 12:20:28

Judging History

你现在查看的是最新测评结果

  • [2024-04-08 12:20:28]
  • 评测
  • 测评结果:WA
  • 用时:340ms
  • 内存:488956kb
  • [2024-04-08 12:20:28]
  • 提交

answer

#include<bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define endl "\n"
//#define int long long
using namespace std;

const int N = 2e5 + 10, T1 = 300, T2 = 1;
const long long base = 177013, mod = 1e9 + 7;

long long pw[N], f[N], a[N], sum[T1 + 10][N / T2 + 10];

long long sum_block[N / T2 + 10], pref_block[N / T2 + 10], pref[N];

int lg[N], rmq[20][N];

int b[N];

int n, m, q;

void handle (int p) {
  long long old = f[p];
  f[p] = p > 1 ? a[p] - a[p - 1] : a[p] - a[n];
  f[p] %= mod;
  for(int c = 1; c <= T1; c++) {
    sum[c][p / T2] += (f[p] - old) * pw[p % c] % mod;
  }
  sum_block[p / T2] += (f[p] - old) * pw[p];
  sum_block[p / T2] %= mod;
  pref_block[0] = sum_block[0];
  for(int i = 1; i <= n / T2; i++) pref_block[i] = pref_block[i - 1] + sum_block[i];
  for(int i = max(1, p / T2 * T2); i <= min(n, p / T2 * T2 + T2 - 1); i++) {
    pref[i] = (f[i] * pw[i] % mod);
    if (i != p / T2 * T2) pref[i] += pref[i - 1];
  }
}

long long get_block (int l, int r) {
  if (l != l / T2 * T2) return pref[r] - pref[l - 1];
  return pref[r];
}

long long get (int l, int r) {
  if (l / T2 == r / T2) return get_block(l, r);
  return get_block(r / T2 * T2, r) + get_block(l, l / T2 * T2 + T2 - 1) + pref_block[r / T2 - 1] - pref_block[l / T2];
}

void update(int p, int v) {
  a[p] = v;
  handle(p);
  if (p + 1 <= n) handle(p + 1);
  else handle(1);
}

tuple<int, int, int, int> query[N];

int get_gcd (int l, int r) {
  int k = lg[r - l + 1];
  return __gcd(rmq[k][l], rmq[k][r - (1 << k) + 1]);
}

int32_t main() {
  #define task ""

  cin.tie(0) -> sync_with_stdio(0);

  if (fopen("task.inp", "r")) {
    freopen("task.inp", "r", stdin);
    freopen("task.out", "w", stdout);
  }

  if (fopen(task".inp", "r")) {
    freopen (task".inp", "r", stdin);
    freopen (task".out", "w", stdout);
  }

  cin >> n >> m >> q;

  pw[0] = 1;
  for(int i = 1; i <= n; i++) {
    pw[i] = pw[i - 1] * base % mod;
  }

  for(int i = 1; i <= n; i++) {
    cin >> a[i];
    update(i, a[i]);
  }

  for(int i = 2; i <= m; i++) lg[i] = lg[i / 2] + 1;

  for(int i = 1; i <= m; i++) cin >> rmq[0][i];

  for(int j = 1; j <= lg[m]; j++) for(int i = 1; i + (1 << j) - 1 <= m; i++) {
    rmq[j][i] = __gcd(rmq[j - 1][i], rmq[j - 1][i + (1 << j - 1)]);
  }

//  cout << get(4, 5);
//  return 0;

  while (q--) {
    char type; cin >> type;
    if (type == 'U') {
      int p, v; cin >> p >> v;
      update(p, v);
    }
    else {
      int x, y, u, v; cin >> x >> y >> u >> v;
      int c = __gcd(y - x + 1, get_gcd(u, v));
      long long hs = 0;
//      cout << c << endl;
      if (c <= T1) {
        int st = x / T2;
        int ed = y / T2;
        for(int i = st + 1; i < ed; i++) hs += sum[c][i];
        if (st == ed) {
          for(int i = x; i <= y; i++) hs += f[i] * pw[i % c];
        }
        else {
          for(int i = x; i <= st * T2 + T2 - 1; i++) hs += f[i] * pw[i % c];
          for(int i = y; i >= ed * T2; i--) hs += f[i] * pw[i % c];
        }
        hs -= f[x] * pw[x % c];
        hs += (a[x] - a[y]) * pw[x % c];
//        cout << hs << endl;
        cout << (hs == 0 ? "Yes\n" : "No\n");
      }
      else {
        for(int i = x; i <= y; i += c) {
          hs += get(i, i + c - 1) % mod * pw[n - i] % mod;
//          cout << get(i, i + c - 1) << " " << i << " " << get(4, 5) << endl;
//          cout << pw[4] << endl;
        }
        hs -= f[x] * pw[n];
        hs += (a[x] - a[y]) * pw[n];
        hs %= mod;
//        cout << hs << endl;
        cout << (hs == 0 ? "Yes\n" : "No\n");
      }
    }
  }
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 484864kb

input:

6 4 5
1 1 4 5 1 4
3 3 2 4
Q 1 5 1 2
Q 2 5 3 4
U 5 2
Q 1 6 1 2
Q 2 5 3 4

output:

Yes
No
No
Yes

result:

ok 4 tokens

Test #2:

score: 0
Accepted
time: 0ms
memory: 482932kb

input:

1 1 1
0
1
Q 1 1 1 1

output:

Yes

result:

ok "Yes"

Test #3:

score: -100
Wrong Answer
time: 340ms
memory: 488956kb

input:

2000 2000 200000
1 1 2 0 0 2 0 2 0 0 0 0 0 2 2 1 2 0 0 2 2 2 1 0 1 2 1 2 0 0 1 1 1 2 0 0 2 2 2 2 0 2 0 0 2 1 2 0 0 1 2 2 1 0 2 0 0 0 1 2 2 1 2 2 0 0 1 1 1 0 0 2 0 0 1 1 0 2 2 2 1 0 0 1 0 1 2 2 2 1 1 2 2 1 2 1 0 2 2 3 1 3 2 3 1 0 1 2 0 1 1 1 0 2 2 3 2 0 3 2 3 3 1 2 3 1 2 0 1 0 3 1 0 0 2 0 1 2 1 3 2 2...

output:

Yes
Yes
No
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
No
Yes
No
No
No
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Yes
Yes
Yes
No
No
Yes
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No...

result:

wrong answer 6824th words differ - expected: 'Yes', found: 'No'