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Submission #152625

# Submission time Handle Problem Language Result Execution time Memory
152625 2019-09-08T15:46:29 Z arnold518 Examination (JOI19_examination) C++14
100 / 100
 2032 ms 275552 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 = 1e5;
const int MAXQ = 1e5;
const int MAXVAL = 1e9;

int N, Q, ans[MAXQ+10];
pii A[MAXN+10];

struct Data { int x, y, z, num; };
Data B[MAXQ+10];

vector<int> xcomp, ycomp;
int getxcomp(int x) { return lower_bound(xcomp.begin(), xcomp.end(), x)-xcomp.begin()+1; }
int getycomp(int y) { return lower_bound(ycomp.begin(), ycomp.end(), y)-ycomp.begin()+1; }

struct Node1
{
    int val; Node1 *lc, *rc;
    Node1() : val(0), lc(NULL), rc(NULL) {}
};

int query1(Node1 *node, int tl, int tr, int xl, int xr)
{
    if(xr<tl || tr<xl) return 0;
    if(xl<=tl && tr<=xr) return node->val;
    int mid=tl+tr>>1;
    int ret=0;
    if(node->lc!=NULL) ret+=query1(node->lc, tl, mid, xl, xr);
    if(node->rc!=NULL) ret+=query1(node->rc, mid+1, tr, xl, xr);
    return ret;
}

void update1(Node1 *node, int tl, int tr, int x)
{
    if(tl==tr)
    {
        node->val++;
        return;
    }
    int mid=tl+tr>>1;
    if(x<=mid)
    {
        if(node->lc==NULL) node->lc=new Node1();
        update1(node->lc, tl, mid, x);
    }
    else
    {
        if(node->rc==NULL) node->rc=new Node1();
        update1(node->rc, mid+1, tr, x);
    }
    node->val++;
}

Node1 *tree[MAXN+10];
void update2(int y, int x) { for(; y<=ycomp.size(); y+=(y&-y)) update1(tree[y], 1, xcomp.size(), x); }
int query2(int y, int xl, int xr) { int ret=0; for(; y>0; y-=(y&-y)) ret+=query1(tree[y], 1, xcomp.size(), xl, xr); return ret; }
int query2(int yl, int yr, int xl, int xr) { return query2(yr, xl, xr)-query2(yl-1, xl, xr); }

int main()
{
    int i, j;

    scanf("%d%d", &N, &Q);
    for(i=1; i<=N; i++) scanf("%d%d", &A[i].first, &A[i].second), xcomp.push_back(A[i].first), ycomp.push_back(A[i].second);
    for(i=1; i<=Q; i++) scanf("%d%d%d", &B[i].x, &B[i].y, &B[i].z), B[i].num=i;

    xcomp.push_back(MAXVAL);
    ycomp.push_back(MAXVAL);
    for(i=0; i<=ycomp.size(); i++) tree[i]=new Node1();

    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());
    sort(A+1, A+N+1, [&](const pii &p, const pii &q) { return p.first+p.second>q.first+q.second; });
    sort(B+1, B+Q+1, [&](const Data &p, const Data &q) { return p.z>q.z; });

    int it=1;
    for(i=1; i<=Q; i++)
    {
        for(; it<=N && A[it].first+A[it].second>=B[i].z; it++) update2(getycomp(A[it].second), getxcomp(A[it].first));
        ans[B[i].num]=query2(getycomp(B[i].y), getycomp(MAXVAL), getxcomp(B[i].x), getxcomp(MAXVAL));
    }
    for(i=1; i<=Q; i++) printf("%d\n", ans[i]);
}

Compilation message

examination.cpp: In function 'int query1(Node1*, int, int, int, int)':
examination.cpp:32:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid=tl+tr>>1;
             ~~^~~
examination.cpp: In function 'void update1(Node1*, int, int, int)':
examination.cpp:46:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid=tl+tr>>1;
             ~~^~~
examination.cpp: In function 'void update2(int, int)':
examination.cpp:61:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 void update2(int y, int x) { for(; y<=ycomp.size(); y+=(y&-y)) update1(tree[y], 1, xcomp.size(), x); }
                                    ~^~~~~~~~~~~~~~
examination.cpp: In function 'int main()':
examination.cpp:75:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i<=ycomp.size(); i++) tree[i]=new Node1();
              ~^~~~~~~~~~~~~~
examination.cpp:67:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
examination.cpp:69:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &N, &Q);
     ~~~~~^~~~~~~~~~~~~~~~
examination.cpp:70:94: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1; i<=N; i++) scanf("%d%d", &A[i].first, &A[i].second), xcomp.push_back(A[i].first), ycomp.push_back(A[i].second);
                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:71:67: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=1; i<=Q; i++) scanf("%d%d%d", &B[i].x, &B[i].y, &B[i].z), B[i].num=i;
                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory 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 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 20 ms 4728 KB Output is correct
8 Correct 20 ms 4800 KB Output is correct
9 Correct 20 ms 4728 KB Output is correct
10 Correct 9 ms 1400 KB Output is correct
11 Correct 9 ms 1400 KB Output is correct
12 Correct 5 ms 632 KB Output is correct
13 Correct 21 ms 4728 KB Output is correct
14 Correct 21 ms 4728 KB Output is correct
15 Correct 22 ms 4856 KB Output is correct
16 Correct 6 ms 760 KB Output is correct
17 Correct 8 ms 980 KB Output is correct
18 Correct 4 ms 632 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1843 ms 233344 KB Output is correct
2 Correct 1840 ms 233732 KB Output is correct
3 Correct 1765 ms 233828 KB Output is correct
4 Correct 330 ms 30828 KB Output is correct
5 Correct 287 ms 27424 KB Output is correct
6 Correct 98 ms 9324 KB Output is correct
7 Correct 1560 ms 233136 KB Output is correct
8 Correct 1553 ms 233652 KB Output is correct
9 Correct 1317 ms 233440 KB Output is correct
10 Correct 153 ms 11884 KB Output is correct
11 Correct 210 ms 17848 KB Output is correct
12 Correct 72 ms 8940 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1843 ms 233344 KB Output is correct
2 Correct 1840 ms 233732 KB Output is correct
3 Correct 1765 ms 233828 KB Output is correct
4 Correct 330 ms 30828 KB Output is correct
5 Correct 287 ms 27424 KB Output is correct
6 Correct 98 ms 9324 KB Output is correct
7 Correct 1560 ms 233136 KB Output is correct
8 Correct 1553 ms 233652 KB Output is correct
9 Correct 1317 ms 233440 KB Output is correct
10 Correct 153 ms 11884 KB Output is correct
11 Correct 210 ms 17848 KB Output is correct
12 Correct 72 ms 8940 KB Output is correct
13 Correct 1553 ms 233912 KB Output is correct
14 Correct 1813 ms 234380 KB Output is correct
15 Correct 1870 ms 233564 KB Output is correct
16 Correct 282 ms 31364 KB Output is correct
17 Correct 272 ms 27688 KB Output is correct
18 Correct 101 ms 9320 KB Output is correct
19 Correct 1610 ms 234308 KB Output is correct
20 Correct 1677 ms 233968 KB Output is correct
21 Correct 1285 ms 234008 KB Output is correct
22 Correct 155 ms 11880 KB Output is correct
23 Correct 203 ms 17732 KB Output is correct
24 Correct 70 ms 8936 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory 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 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 20 ms 4728 KB Output is correct
8 Correct 20 ms 4800 KB Output is correct
9 Correct 20 ms 4728 KB Output is correct
10 Correct 9 ms 1400 KB Output is correct
11 Correct 9 ms 1400 KB Output is correct
12 Correct 5 ms 632 KB Output is correct
13 Correct 21 ms 4728 KB Output is correct
14 Correct 21 ms 4728 KB Output is correct
15 Correct 22 ms 4856 KB Output is correct
16 Correct 6 ms 760 KB Output is correct
17 Correct 8 ms 980 KB Output is correct
18 Correct 4 ms 632 KB Output is correct
19 Correct 1843 ms 233344 KB Output is correct
20 Correct 1840 ms 233732 KB Output is correct
21 Correct 1765 ms 233828 KB Output is correct
22 Correct 330 ms 30828 KB Output is correct
23 Correct 287 ms 27424 KB Output is correct
24 Correct 98 ms 9324 KB Output is correct
25 Correct 1560 ms 233136 KB Output is correct
26 Correct 1553 ms 233652 KB Output is correct
27 Correct 1317 ms 233440 KB Output is correct
28 Correct 153 ms 11884 KB Output is correct
29 Correct 210 ms 17848 KB Output is correct
30 Correct 72 ms 8940 KB Output is correct
31 Correct 1553 ms 233912 KB Output is correct
32 Correct 1813 ms 234380 KB Output is correct
33 Correct 1870 ms 233564 KB Output is correct
34 Correct 282 ms 31364 KB Output is correct
35 Correct 272 ms 27688 KB Output is correct
36 Correct 101 ms 9320 KB Output is correct
37 Correct 1610 ms 234308 KB Output is correct
38 Correct 1677 ms 233968 KB Output is correct
39 Correct 1285 ms 234008 KB Output is correct
40 Correct 155 ms 11880 KB Output is correct
41 Correct 203 ms 17732 KB Output is correct
42 Correct 70 ms 8936 KB Output is correct
43 Correct 1657 ms 275372 KB Output is correct
44 Correct 1681 ms 275384 KB Output is correct
45 Correct 2032 ms 275552 KB Output is correct
46 Correct 318 ms 38508 KB Output is correct
47 Correct 308 ms 33308 KB Output is correct
48 Correct 97 ms 9196 KB Output is correct
49 Correct 1631 ms 275360 KB Output is correct
50 Correct 1415 ms 275252 KB Output is correct
51 Correct 1268 ms 275132 KB Output is correct
52 Correct 198 ms 14512 KB Output is correct
53 Correct 237 ms 23208 KB Output is correct