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Submission #1038451

# Submission time Handle Problem Language Result Execution time Memory
1038451 2024-07-29T19:50:25 Z Jarif_Rahman Examination (JOI19_examination) C++17
100 / 100
 301 ms 20164 KB 
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

const int inf = 1e9;

struct BIT{
    int n;
    vector<int> sm;
    BIT(int _n){
        n = _n;
        sm.resize(n);
    }
    void add(int in, int x){
        in++;
        while(in <= n) sm[in-1]+=x, in+=in&-in;
    }
    int sum(int in){
        in++;
        int s = 0;
        while(in >= 1) s+=sm[in-1], in-=in&-in;
        return s;
    }
    int sum(int l, int r){
        return sum(r)-(l == 0? 0:sum(l-1));
    }
};

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n, q; cin >> n >> q;
    vector<tuple<int, int, int, int>> S;

    for(int i = 0; i < n; i++){
        int s, t; cin >> s >> t;
        S.push_back({s, t, s+t, inf});
    }
    for(int i = 0; i < q; i++){
        int a, b, c; cin >> a >> b >> c;
        S.push_back({a, b, c, i});
    }

    sort(S.begin(), S.end());
    int m = S.size();
    {
        vector<int> srt;
        for(auto [_0, _1, x, _2]: S) srt.push_back(x);
        sort(srt.begin(), srt.end());
        map<int, int> mp;
        for(int i = 0; i < m; i++) mp[srt[i]] = i;
        for(auto &[_0, _1, x, _2]: S) x = mp[x];
    }
    
    BIT bit(m);
    vector<int> ans(q, 0);

    function<void(int, int)> cdq = [&](int l, int r){
        if(l == r) return;
        int md = (l+r)/2;
        cdq(l, md);
        cdq(md+1, r);

        vector<tuple<int, int, int>> cur;
        for(int i = l; i <= md; i++){
            auto [a, b, c, in] = S[i];
            if(in < inf) cur.push_back({b, in, c});
        }
        for(int i = md+1; i <= r; i++){
            auto [a, b, c, in] = S[i];
            if(in == inf) cur.push_back({b, in, c});
        }
        sort(cur.rbegin(), cur.rend());

        for(auto [b, in, c]: cur){
            if(in == inf) bit.add(c, 1);
            else ans[in]+=bit.sum(c, m-1);
        }
        for(auto [b, in, c]: cur){
            if(in == inf) bit.add(c, -1);
        }
    };
    cdq(0, m-1);

    for(int x: ans) cout << x << "\n";
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 6 ms 856 KB Output is correct
8 Correct 6 ms 856 KB Output is correct
9 Correct 6 ms 856 KB Output is correct
10 Correct 7 ms 860 KB Output is correct
11 Correct 5 ms 860 KB Output is correct
12 Correct 4 ms 604 KB Output is correct
13 Correct 5 ms 860 KB Output is correct
14 Correct 5 ms 860 KB Output is correct
15 Correct 5 ms 860 KB Output is correct
16 Correct 3 ms 600 KB Output is correct
17 Correct 5 ms 860 KB Output is correct
18 Correct 3 ms 604 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 232 ms 11308 KB Output is correct
2 Correct 230 ms 10944 KB Output is correct
3 Correct 231 ms 10944 KB Output is correct
4 Correct 235 ms 10896 KB Output is correct
5 Correct 168 ms 10940 KB Output is correct
6 Correct 109 ms 9216 KB Output is correct
7 Correct 217 ms 12476 KB Output is correct
8 Correct 218 ms 11264 KB Output is correct
9 Correct 218 ms 13808 KB Output is correct
10 Correct 170 ms 10460 KB Output is correct
11 Correct 179 ms 10684 KB Output is correct
12 Correct 91 ms 7360 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 232 ms 11308 KB Output is correct
2 Correct 230 ms 10944 KB Output is correct
3 Correct 231 ms 10944 KB Output is correct
4 Correct 235 ms 10896 KB Output is correct
5 Correct 168 ms 10940 KB Output is correct
6 Correct 109 ms 9216 KB Output is correct
7 Correct 217 ms 12476 KB Output is correct
8 Correct 218 ms 11264 KB Output is correct
9 Correct 218 ms 13808 KB Output is correct
10 Correct 170 ms 10460 KB Output is correct
11 Correct 179 ms 10684 KB Output is correct
12 Correct 91 ms 7360 KB Output is correct
13 Correct 280 ms 14268 KB Output is correct
14 Correct 252 ms 13136 KB Output is correct
15 Correct 225 ms 11084 KB Output is correct
16 Correct 245 ms 11192 KB Output is correct
17 Correct 195 ms 11196 KB Output is correct
18 Correct 120 ms 8892 KB Output is correct
19 Correct 268 ms 13760 KB Output is correct
20 Correct 253 ms 14112 KB Output is correct
21 Correct 257 ms 14816 KB Output is correct
22 Correct 137 ms 10856 KB Output is correct
23 Correct 174 ms 10688 KB Output is correct
24 Correct 82 ms 7608 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 6 ms 856 KB Output is correct
8 Correct 6 ms 856 KB Output is correct
9 Correct 6 ms 856 KB Output is correct
10 Correct 7 ms 860 KB Output is correct
11 Correct 5 ms 860 KB Output is correct
12 Correct 4 ms 604 KB Output is correct
13 Correct 5 ms 860 KB Output is correct
14 Correct 5 ms 860 KB Output is correct
15 Correct 5 ms 860 KB Output is correct
16 Correct 3 ms 600 KB Output is correct
17 Correct 5 ms 860 KB Output is correct
18 Correct 3 ms 604 KB Output is correct
19 Correct 232 ms 11308 KB Output is correct
20 Correct 230 ms 10944 KB Output is correct
21 Correct 231 ms 10944 KB Output is correct
22 Correct 235 ms 10896 KB Output is correct
23 Correct 168 ms 10940 KB Output is correct
24 Correct 109 ms 9216 KB Output is correct
25 Correct 217 ms 12476 KB Output is correct
26 Correct 218 ms 11264 KB Output is correct
27 Correct 218 ms 13808 KB Output is correct
28 Correct 170 ms 10460 KB Output is correct
29 Correct 179 ms 10684 KB Output is correct
30 Correct 91 ms 7360 KB Output is correct
31 Correct 280 ms 14268 KB Output is correct
32 Correct 252 ms 13136 KB Output is correct
33 Correct 225 ms 11084 KB Output is correct
34 Correct 245 ms 11192 KB Output is correct
35 Correct 195 ms 11196 KB Output is correct
36 Correct 120 ms 8892 KB Output is correct
37 Correct 268 ms 13760 KB Output is correct
38 Correct 253 ms 14112 KB Output is correct
39 Correct 257 ms 14816 KB Output is correct
40 Correct 137 ms 10856 KB Output is correct
41 Correct 174 ms 10688 KB Output is correct
42 Correct 82 ms 7608 KB Output is correct
43 Correct 301 ms 19388 KB Output is correct
44 Correct 298 ms 19212 KB Output is correct
45 Correct 286 ms 19388 KB Output is correct
46 Correct 296 ms 17856 KB Output is correct
47 Correct 244 ms 17660 KB Output is correct
48 Correct 130 ms 9120 KB Output is correct
49 Correct 281 ms 19572 KB Output is correct
50 Correct 291 ms 20164 KB Output is correct
51 Correct 287 ms 19136 KB Output is correct
52 Correct 210 ms 18112 KB Output is correct
53 Correct 221 ms 12220 KB Output is correct