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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#771453#9543. Good PartitionsyimgWA 236ms7876kbC++201.9kb2024-11-22 13:09:342024-11-22 13:09:34

Judging History

你现在查看的是最新测评结果

  • [2024-11-22 13:09:34]
  • 评测
  • 测评结果:WA
  • 用时:236ms
  • 内存:7876kb
  • [2024-11-22 13:09:34]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
const int N = 2e5 + 5;
int dnum[N];
void init(){
    for(i64 i = 1; i <= N; ++i){
        for(i64 j = 1; j * j <= i; ++j){
            if(j * j == i) dnum[i]++;
            else if(i % j == 0) dnum[i] += 2;
        }
    }
    dnum[0] = 1;
}
struct Segment{
    int n;
    vector<int> tr;
    Segment(int n_){
        n = n_ + 1;
        tr.resize(n * 4 + 50, 0);
    }
    void pull(int p){
       
        tr[p] = __gcd(tr[p*2], tr[p*2 + 1]);
        // cout << "PPP : " << tr[p * 2] << " " << tr[p *  2 + 1] << " " << tr[p] << "\n";
    }
    void update(int x, int v){
        update(1, 1, n, x, v);
    }
    void update(int p, int l, int r, int x, int v){
        // cout << p << ' ' << l << " " << r << "\n";
        if(r - l == 1){
            tr[p] = v;
            return;
        }
        int m = l + r >> 1;
        if(x < m) update(p*2, l, m, x, v);
        else update(p*2 + 1, m, r, x, v);
        pull(p);
    }
    int query(){
        return tr[1];
    }
};
void work()
{
    int n, q;
    cin >> n >> q;
    vector<int> a(n + 1);
    Segment seg(n);
    for(int i = 1; i <= n; ++i){
        cin >> a[i];
    }
    for(int i = 1; i < n; ++i){
        if(a[i] > a[i + 1]) seg.update(i, i);
    }
    // cout << seg.query() << " ";
    cout << dnum[seg.query()] << "\n";
    while(q--){
        int i, x;
        cin >> i >> x;
        a[i] = x;
        if(i + 1 <= n && a[i] > a[i + 1]) seg.update(i, i);
        else seg.update(i, 0);
        if(i && a[i - 1] > a[i]) seg.update(i - 1, i - 1);
        else seg.update(i - 1, 0);
        // cout << seg.query() << " ";
        cout << dnum[seg.query()] << "\n";
    }
}
int main()
{

    ios::sync_with_stdio(0);
    cin.tie(0);
    int t;
    cin >> t;
    init();
    while(t--)
        work();
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 176ms
memory: 4336kb

input:

1
5 2
4 3 2 6 1
2 5
3 5

output:

1
2
3

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 180ms
memory: 4340kb

input:

1
1 1
2000000000
1 1999999999

output:

1
1

result:

ok 2 lines

Test #3:

score: -100
Wrong Answer
time: 236ms
memory: 7876kb

input:

1
200000 200000
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 ...

output:

160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
160
1
...

result:

wrong answer 2nd lines differ - expected: '200000', found: '1'