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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#382309#7782. Ursa MinornguyentunglamWA 53ms20088kbC++173.3kb2024-04-08 11:56:422024-04-08 11:56:42

Judging History

你现在查看的是最新测评结果

  • [2024-04-08 11:56:42]
  • 评测
  • 测评结果:WA
  • 用时:53ms
  • 内存:20088kb
  • [2024-04-08 11:56:42]
  • 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 = 0, T2 = 300;
const long long base = 2, 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];
  for(int c = 1; c <= T1; c++) {
    sum[c][p / T2] += (f[p] - old) * pw[p % c];
  }
  sum_block[p / T2] += (f[p] - old) * pw[p];
  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] = pref[i - 1] + f[i] * pw[i];
  }
}

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

  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;
      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 << i << " " << i + c - 1 << " " << get(i, i + c - 1) << " " << pw[n - i] << 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: 11864kb

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: 2ms
memory: 13900kb

input:

1 1 1
0
1
Q 1 1 1 1

output:

Yes

result:

ok "Yes"

Test #3:

score: -100
Wrong Answer
time: 53ms
memory: 20088kb

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 111th words differ - expected: 'Yes', found: 'No'