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Submission #157285

# Submission time Handle Problem Language Result Execution time Memory
157285 2019-10-10T11:12:19 Z combi1k1 Examination (JOI19_examination) C++14
100 / 100
 553 ms 26116 KB 
#include<bits/stdc++.h>

using namespace std;

#define X       first
#define Y       second
#define pb      push_back
#define sz(x)   x.size()
#define all(x)  x.begin(),x.end()

const int   N   = 1e5 + 10;

namespace BIT2D {
    vector<int> val[N];
    vector<int> bit[N];

    void init() {
        for(int i = 1 ; i < N ; ++i)    {
            sort(all(val[i]));
            val[i].resize(unique(all(val[i])) - val[i].begin());
            bit[i].resize(sz(val[i]) + 5);
        }
    }
    int upd(int x,int y)    {
        for(; x > 0 ; x -= x & -x)  {
            int p = upper_bound(all(val[x]),y) - val[x].begin();
            for(; p > 0 ; p -= p & -p)
                bit[x][p]++;
        }
    }
    int get(int x,int y)    {
        int ans = 0;
        for(; x < N ; x += x & -x)  {
            int p = lower_bound(all(val[x]),y) - val[x].begin() + 1;
            for(; p <  bit[x].size() ; p += p & -p)
                ans += bit[x][p];
        }
        return  ans;
    }
};

typedef pair<int,int>   ii;

vector<ii>  Poi;
vector<int> Que;

int Math[N];
int Info[N];
int Sum[N];
int ans[N];

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

    int n;  cin >> n;   Poi.resize(n);
    int q;  cin >> q;

    vector<int> row = {-1};
    vector<int> col = {-1};

    for(ii &p : Poi)    {
        cin >> p.X >> p.Y;
        row.pb(p.X);
        col.pb(p.Y);
    }
    sort(all(Poi),[&](const ii &a,const ii &b)  {
         return  a.X + a.Y > b.X + b.Y;
    });

    sort(all(row)); row.erase(unique(all(row)),row.end());
    sort(all(col)); col.erase(unique(all(col)),col.end());

    for(ii &p : Poi)    {
        p.X = lower_bound(all(row),p.X) - row.begin();
        p.Y = lower_bound(all(col),p.Y) - col.begin();
        for(int i = p.X ; i > 0 ; i -= i & -i)
            BIT2D::val[i].push_back(p.Y);
    }

    for(int i = 0 ; i < q ; ++i)    {
        int M;  cin >> M;   Math[i] = lower_bound(all(row),M) - row.begin();
        int I;  cin >> I;   Info[i] = lower_bound(all(col),I) - col.begin();
        cin >> Sum[i];
        Que.pb(i);
    }

    sort(all(Que),[&](const int &a,const int &b)    {
         return  Sum[a] > Sum[b];
    });

    BIT2D::init();
    int ptr = 0;

    for(int i : Que)    {
        for(; ptr < Poi.size() ; ++ptr) {
            int x = Poi[ptr].X;
            int y = Poi[ptr].Y;
            if (row[x] + col[y] < Sum[i])
                break;
            BIT2D::upd(x,y);
        }
        ans[i] = BIT2D::get(Math[i],Info[i]);
    }

    for(int i = 0 ; i < q ; ++i)
        cout << ans[i] << "\n";
}

Compilation message

examination.cpp: In function 'int BIT2D::upd(int, int)':
examination.cpp:30:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
examination.cpp: In function 'int BIT2D::get(int, int)':
examination.cpp:35:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(; p <  bit[x].size() ; p += p & -p)
                   ~~^~~~~~~~~~~~~~~~
examination.cpp: In function 'int main()':
examination.cpp:96:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(; ptr < Poi.size() ; ++ptr) {
               ~~~~^~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 8184 KB Output is correct
2 Correct 14 ms 8184 KB Output is correct
3 Correct 14 ms 8184 KB Output is correct
4 Correct 14 ms 8184 KB Output is correct
5 Correct 14 ms 8148 KB Output is correct
6 Correct 14 ms 8184 KB Output is correct
7 Correct 23 ms 8744 KB Output is correct
8 Correct 22 ms 8696 KB Output is correct
9 Correct 22 ms 8696 KB Output is correct
10 Correct 20 ms 8572 KB Output is correct
11 Correct 19 ms 8572 KB Output is correct
12 Correct 17 ms 8312 KB Output is correct
13 Correct 22 ms 8668 KB Output is correct
14 Correct 22 ms 8740 KB Output is correct
15 Correct 22 ms 8696 KB Output is correct
16 Correct 19 ms 8440 KB Output is correct
17 Correct 19 ms 8572 KB Output is correct
18 Correct 17 ms 8312 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 472 ms 23020 KB Output is correct
2 Correct 462 ms 23020 KB Output is correct
3 Correct 463 ms 22968 KB Output is correct
4 Correct 217 ms 20212 KB Output is correct
5 Correct 191 ms 15724 KB Output is correct
6 Correct 111 ms 14252 KB Output is correct
7 Correct 451 ms 23020 KB Output is correct
8 Correct 421 ms 23008 KB Output is correct
9 Correct 438 ms 23020 KB Output is correct
10 Correct 147 ms 14616 KB Output is correct
11 Correct 170 ms 18924 KB Output is correct
12 Correct 88 ms 13264 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 472 ms 23020 KB Output is correct
2 Correct 462 ms 23020 KB Output is correct
3 Correct 463 ms 22968 KB Output is correct
4 Correct 217 ms 20212 KB Output is correct
5 Correct 191 ms 15724 KB Output is correct
6 Correct 111 ms 14252 KB Output is correct
7 Correct 451 ms 23020 KB Output is correct
8 Correct 421 ms 23008 KB Output is correct
9 Correct 438 ms 23020 KB Output is correct
10 Correct 147 ms 14616 KB Output is correct
11 Correct 170 ms 18924 KB Output is correct
12 Correct 88 ms 13264 KB Output is correct
13 Correct 502 ms 23428 KB Output is correct
14 Correct 524 ms 23412 KB Output is correct
15 Correct 461 ms 22984 KB Output is correct
16 Correct 237 ms 20460 KB Output is correct
17 Correct 212 ms 16044 KB Output is correct
18 Correct 116 ms 14188 KB Output is correct
19 Correct 499 ms 23464 KB Output is correct
20 Correct 507 ms 23532 KB Output is correct
21 Correct 494 ms 23404 KB Output is correct
22 Correct 147 ms 14584 KB Output is correct
23 Correct 176 ms 19052 KB Output is correct
24 Correct 88 ms 13396 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 8184 KB Output is correct
2 Correct 14 ms 8184 KB Output is correct
3 Correct 14 ms 8184 KB Output is correct
4 Correct 14 ms 8184 KB Output is correct
5 Correct 14 ms 8148 KB Output is correct
6 Correct 14 ms 8184 KB Output is correct
7 Correct 23 ms 8744 KB Output is correct
8 Correct 22 ms 8696 KB Output is correct
9 Correct 22 ms 8696 KB Output is correct
10 Correct 20 ms 8572 KB Output is correct
11 Correct 19 ms 8572 KB Output is correct
12 Correct 17 ms 8312 KB Output is correct
13 Correct 22 ms 8668 KB Output is correct
14 Correct 22 ms 8740 KB Output is correct
15 Correct 22 ms 8696 KB Output is correct
16 Correct 19 ms 8440 KB Output is correct
17 Correct 19 ms 8572 KB Output is correct
18 Correct 17 ms 8312 KB Output is correct
19 Correct 472 ms 23020 KB Output is correct
20 Correct 462 ms 23020 KB Output is correct
21 Correct 463 ms 22968 KB Output is correct
22 Correct 217 ms 20212 KB Output is correct
23 Correct 191 ms 15724 KB Output is correct
24 Correct 111 ms 14252 KB Output is correct
25 Correct 451 ms 23020 KB Output is correct
26 Correct 421 ms 23008 KB Output is correct
27 Correct 438 ms 23020 KB Output is correct
28 Correct 147 ms 14616 KB Output is correct
29 Correct 170 ms 18924 KB Output is correct
30 Correct 88 ms 13264 KB Output is correct
31 Correct 502 ms 23428 KB Output is correct
32 Correct 524 ms 23412 KB Output is correct
33 Correct 461 ms 22984 KB Output is correct
34 Correct 237 ms 20460 KB Output is correct
35 Correct 212 ms 16044 KB Output is correct
36 Correct 116 ms 14188 KB Output is correct
37 Correct 499 ms 23464 KB Output is correct
38 Correct 507 ms 23532 KB Output is correct
39 Correct 494 ms 23404 KB Output is correct
40 Correct 147 ms 14584 KB Output is correct
41 Correct 176 ms 19052 KB Output is correct
42 Correct 88 ms 13396 KB Output is correct
43 Correct 548 ms 26116 KB Output is correct
44 Correct 553 ms 26016 KB Output is correct
45 Correct 536 ms 26024 KB Output is correct
46 Correct 264 ms 22124 KB Output is correct
47 Correct 225 ms 17388 KB Output is correct
48 Correct 121 ms 14068 KB Output is correct
49 Correct 553 ms 25940 KB Output is correct
50 Correct 494 ms 25892 KB Output is correct
51 Correct 474 ms 25864 KB Output is correct
52 Correct 179 ms 16208 KB Output is correct
53 Correct 189 ms 20332 KB Output is correct