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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#116041#4772. Movie collectionmomoyuu#AC ✓42ms4692kbC++171.2kb2023-06-28 00:53:192023-06-28 00:53:20

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-06-28 00:53:20]
  • 评测
  • 测评结果:AC
  • 用时:42ms
  • 内存:4692kb
  • [2023-06-28 00:53:19]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
using ll = long long;

template< typename T >
struct BIT{
    int n;
    vector<T> data;
    BIT(int n):n(n),data(n+1,0){}

    void add(int i,T x){
        i++;
        while(i<=n){
            data[i] += x;
            i += i & (-i);
        }
    }

    //sum of [l,r)
    T sum(int l,int r){
        return sum(r-1)-sum(l-1);
    }

    T sum(int i){
        i++;
        T now = 0;
        while(i>0){
            now += data[i];
            i -= i & (-i);
        }
        return now;
    }
};


void solve(){
    int n,m;
    cin>>n>>m;
    BIT<int> bit(n+m+10);
    for(int i =0;i<n;i++) bit.add(i,1);
    vector<int> idx(n,0);
    for(int i = 0;i<n;i++) idx[i] =  n - i - 1;
    int ni = n;
    for(int i = 0;i<m;i++){
        int a;
        cin>>a;
        a--;
        if(i) cout<<" ";
        cout<<bit.sum(idx[a],n+m+10)-1;
        bit.add(idx[a],-1);
        idx[a] = ni++;
        bit.add(idx[a],1);
    }
    cout<<endl;

}

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int t;
    cin>>t;
    while(t--){
        solve();
    }
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3468kb

input:

2
3 3
3 1 1
5 3
4 4 5

output:

2 1 0
3 0 4

result:

ok 2 lines

Test #2:

score: 0
Accepted
time: 42ms
memory: 4692kb

input:

25
3 3
3 1 1
5 3
4 4 5
84 887
10 20 30 32 11 73 58 74 3 20 63 68 84 71 25 79 17 17 60 57 76 10 3 27 27 56 44 20 6 43 67 55 18 52 2 29 80 59 58 82 34 36 21 74 63 45 24 79 18 83 8 9 9 10 75 75 65 74 10 70 33 76 81 6 83 82 74 78 13 4 31 46 39 52 75 57 52 15 8 25 13 15 33 61 64 24 51 44 13 61 69 1 8 65 ...

output:

2 1 0
3 0 4
9 19 29 31 13 72 58 73 10 7 64 69 83 73 33 79 28 0 66 65 77 18 12 39 0 66 55 15 26 55 73 67 38 65 29 47 80 69 27 82 53 55 47 31 31 62 51 29 15 83 43 44 0 28 80 0 76 11 3 79 59 33 83 29 11 20 8 83 52 49 61 69 66 32 17 41 2 57 21 45 10 3 18 77 79 27 76 43 7 5 81 57 11 28 74 60 64 38 72 55 ...

result:

ok 25 lines