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답안 #172770

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
172770 2020-01-02T15:03:26 Z arnold518 Matryoshka (JOI16_matryoshka) C++14
100 / 100
 473 ms 13264 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 4e5;

struct Point
{
    int x, y, p;
};

int N, Q, ans[MAXN+10];
Point A[MAXN+10];
vector<int> xcomp, ycomp;

int tree[MAXN+10];
void update(int i, int val) { for(; i<=xcomp.size(); i+=(i&-i)) tree[i]=max(tree[i], val); }
int query(int i) { int ret=0; for(; i>0; i-=(i&-i)) ret=max(ret, tree[i]); return ret; }

int main()
{
    int i, j;

    scanf("%d%d", &N, &Q);
    for(i=1; i<=N; i++)
    {
        scanf("%d%d", &A[i].x, &A[i].y);
        A[i].x*=-1; A[i].p=-1;
        xcomp.push_back(A[i].x);
        ycomp.push_back(A[i].y);
    }

    for(i=N+1; i<=N+Q; i++)
    {
        scanf("%d%d", &A[i].x, &A[i].y);
        A[i].x*=-1; A[i].p=i-N;
        xcomp.push_back(A[i].x);
        ycomp.push_back(A[i].y);
    }

    sort(xcomp.begin(), xcomp.end());
    sort(ycomp.begin(), ycomp.end());
    xcomp.erase(unique(xcomp.begin(), xcomp.end()), xcomp.end());
    ycomp.erase(unique(ycomp.begin(), ycomp.end()), ycomp.end());

    for(i=1; i<=N+Q; i++) A[i].x=lower_bound(xcomp.begin(), xcomp.end(), A[i].x)-xcomp.begin()+1;
    for(i=1; i<=N+Q; i++) A[i].y=lower_bound(ycomp.begin(), ycomp.end(), A[i].y)-ycomp.begin()+1;

    sort(A+1, A+N+Q+1, [&](const Point &p, const Point &q)
         {
             if(pii(p.y, p.x)!=pii(q.y, q.x)) return pii(p.y, p.x)<pii(q.y, q.x);
             else return p.p<q.p;
         });

    for(i=1; i<=N+Q; i++)
    {
        if(A[i].p==-1) update(A[i].x, query(A[i].x)+1);
        else ans[A[i].p]=query(A[i].x);
    }
    for(i=1; i<=Q; i++) printf("%d\n", ans[i]);
}

Compilation message

matryoshka.cpp: In function 'void update(int, int)':
matryoshka.cpp:20:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 void update(int i, int val) { for(; i<=xcomp.size(); i+=(i&-i)) tree[i]=max(tree[i], val); }
                                     ~^~~~~~~~~~~~~~
matryoshka.cpp: In function 'int main()':
matryoshka.cpp:25:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
matryoshka.cpp:27:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &N, &Q);
     ~~~~~^~~~~~~~~~~~~~~~
matryoshka.cpp:30:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &A[i].x, &A[i].y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
matryoshka.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &A[i].x, &A[i].y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 1 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 380 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 1 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 380 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 5 ms 504 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 504 KB Output is correct
26 Correct 5 ms 504 KB Output is correct
27 Correct 5 ms 504 KB Output is correct
28 Correct 5 ms 504 KB Output is correct
29 Correct 5 ms 504 KB Output is correct
30 Correct 4 ms 504 KB Output is correct
31 Correct 5 ms 504 KB Output is correct
32 Correct 5 ms 504 KB Output is correct
33 Correct 5 ms 504 KB Output is correct
34 Correct 5 ms 504 KB Output is correct
35 Correct 5 ms 504 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 1 ms 376 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 1 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 380 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 5 ms 504 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 504 KB Output is correct
26 Correct 5 ms 504 KB Output is correct
27 Correct 5 ms 504 KB Output is correct
28 Correct 5 ms 504 KB Output is correct
29 Correct 5 ms 504 KB Output is correct
30 Correct 4 ms 504 KB Output is correct
31 Correct 5 ms 504 KB Output is correct
32 Correct 5 ms 504 KB Output is correct
33 Correct 5 ms 504 KB Output is correct
34 Correct 5 ms 504 KB Output is correct
35 Correct 5 ms 504 KB Output is correct
36 Correct 422 ms 11008 KB Output is correct
37 Correct 352 ms 12376 KB Output is correct
38 Correct 147 ms 4832 KB Output is correct
39 Correct 282 ms 10508 KB Output is correct
40 Correct 282 ms 10940 KB Output is correct
41 Correct 365 ms 11600 KB Output is correct
42 Correct 191 ms 10964 KB Output is correct
43 Correct 121 ms 11224 KB Output is correct
44 Correct 472 ms 12624 KB Output is correct
45 Correct 472 ms 12908 KB Output is correct
46 Correct 469 ms 12752 KB Output is correct
47 Correct 465 ms 12624 KB Output is correct
48 Correct 466 ms 13264 KB Output is correct
49 Correct 468 ms 12640 KB Output is correct
50 Correct 473 ms 13084 KB Output is correct