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Submission #964440

# Submission time Handle Problem Language Result Execution time Memory
964440 2024-04-16T22:07:45 Z Unforgettablepl Examination (JOI19_examination) C++17
41 / 100
 80 ms 15424 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

struct fenwick{
    int n;vector<int> tree;
    fenwick(int n):n(n+1),tree(n+2){}
    int get(int x){
        int ans = 0;
        x++;
        while(x){
            ans+=tree[x];
            x-=x&-x;
        }
        return ans;
    }
    void add(int x){
        x++;
        while(x<=n){
            tree[x]++;
            x+=x&-x;
        }
    }
};

int ans[100001];

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,q;
    cin >> n >> q;
    vector<pair<int,int>> students1;
    vector<tuple<int,int,int>> students2;
    for(int i=1;i<=n;i++){
        int x,y;cin>>x>>y;
        students1.emplace_back(x,y);
        students2.emplace_back(x+y,x,y);
    }
    vector<tuple<int,int,int>> queries1;
    vector<tuple<int,int,int,int>> queries2;
    for(int i=1;i<=q;i++){
        int a,b,c;cin>>a>>b>>c;
        if(a+b>=c)queries1.emplace_back(a,b,i);
        else queries2.emplace_back(c,a,b,i);
    }
    sort(queries1.rbegin(),queries1.rend());
    sort(queries2.rbegin(),queries2.rend());
    sort(students1.rbegin(),students1.rend());
    sort(students2.rbegin(),students2.rend());
    auto iter = students1.begin();
    fenwick f1(100000);
    fenwick f2(100000);
    for(auto[a,b,idx]:queries1){
        while(iter!=students1.end() and iter->first>=a){
            f1.add(iter->second);
            iter++;
        }
        ans[idx] = f1.get(100000)-f1.get(b-1);
    }
    for(int&i:f1.tree)i=0;
    auto iter2 = students2.begin();
    for(auto[c,a,b,idx]:queries2){
        while(iter2!=students2.end() and get<0>(*iter2)>=c){
            f1.add(get<1>(*iter2));
            f2.add(get<2>(*iter2));
            iter2++;
        }
        ans[idx] = f1.get(100000)-f1.get(a-1)-f2.get(b-1);
    }
    for(int i=1;i<=q;i++)cout<<ans[i]<<'\n';
}

Subtask #1
0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1880 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Runtime error 3 ms 3792 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 10376 KB Output is correct
2 Correct 62 ms 10324 KB Output is correct
3 Correct 64 ms 9400 KB Output is correct
4 Correct 59 ms 10316 KB Output is correct
5 Correct 69 ms 9688 KB Output is correct
6 Correct 58 ms 9988 KB Output is correct
7 Correct 66 ms 10132 KB Output is correct
8 Correct 65 ms 9924 KB Output is correct
9 Correct 62 ms 10324 KB Output is correct
10 Correct 68 ms 10476 KB Output is correct
11 Correct 59 ms 9980 KB Output is correct
12 Correct 48 ms 9312 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 10376 KB Output is correct
2 Correct 62 ms 10324 KB Output is correct
3 Correct 64 ms 9400 KB Output is correct
4 Correct 59 ms 10316 KB Output is correct
5 Correct 69 ms 9688 KB Output is correct
6 Correct 58 ms 9988 KB Output is correct
7 Correct 66 ms 10132 KB Output is correct
8 Correct 65 ms 9924 KB Output is correct
9 Correct 62 ms 10324 KB Output is correct
10 Correct 68 ms 10476 KB Output is correct
11 Correct 59 ms 9980 KB Output is correct
12 Correct 48 ms 9312 KB Output is correct
13 Correct 69 ms 10824 KB Output is correct
14 Correct 79 ms 14384 KB Output is correct
15 Correct 64 ms 11968 KB Output is correct
16 Correct 72 ms 12352 KB Output is correct
17 Correct 69 ms 12748 KB Output is correct
18 Correct 57 ms 11784 KB Output is correct
19 Correct 77 ms 14392 KB Output is correct
20 Correct 80 ms 14148 KB Output is correct
21 Correct 70 ms 15424 KB Output is correct
22 Correct 63 ms 11972 KB Output is correct
23 Correct 59 ms 11752 KB Output is correct
24 Correct 44 ms 10836 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1880 KB Output is correct
2 Correct 1 ms 1884 KB Output is correct
3 Correct 1 ms 1884 KB Output is correct
4 Runtime error 3 ms 3792 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -