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Submission #298926

# Submission time Handle Problem Language Result Execution time Memory
298926 2020-09-14T10:48:15 Z mhy908 Circle selection (APIO18_circle_selection) C++14
37 / 100
 3000 ms 535044 KB 
#include <bits/stdc++.h>
#define mp make_pair
#define eb emplace_back
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define svec(x) sort(all(x))
#define press(x) x.erase(unique(all(x)), x.end());
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<int, LL> pil;
typedef pair<LL, int> pli;
typedef pair<LL, LL> pll;
const int INF=1e9;
const LL LLINF=1e18;

int n, ans[300010], l[300010], r[300010];
pair<pii, pii> arr[300010];
vector<int> idx;
bool cmp(pair<pii, pii> a, pair<pii, pii> b){return mp(a.S.F, -a.S.S)>mp(b.S.F, -b.S.S);}
bool is_con(int a, int b){
    LL d=(LL)(arr[a].F.F-arr[b].F.F)*(arr[a].F.F-arr[b].F.F)+(LL)(arr[a].F.S-arr[b].F.S)*(arr[a].F.S-arr[b].F.S);
    LL rs=(LL)(arr[a].S.F+arr[b].S.F)*(arr[a].S.F+arr[b].S.F);
    return rs>=d;
}

struct NODE{
    vector<pii> vc;
    vector<int> par;
    int findpar(int num){return num==par[num]?num:par[num]=findpar(par[num]);}
    void query(int s, int e, int num){
        int nw=lower_bound(all(vc), mp(s, 0))-vc.begin();
        while(1){
            nw=findpar(nw);
            //printf("%d %d\n", nw);
            if(nw>=vc.size()||vc[nw].F>e)break;
            int nw2=vc[nw].S;
            if(ans[arr[nw2].S.S])par[nw]=findpar(nw+1);
            else if(is_con(nw2, num))ans[arr[nw2].S.S]=arr[num].S.S;
            nw++;
        }
    }
    void init(){
        svec(vc);
        par.resize(vc.size()+1);
        for(int i=0; i<par.size(); i++)par[i]=i;
    }
}tree[2400010];
void update(int point, int s, int e, int num, pii val){
    tree[point].vc.eb(val);
    if(s==e)return;
    if(num<=(s+e)/2)update(point*2, s, (s+e)/2, num, val);
    else update(point*2+1, (s+e)/2+1, e, num, val);
}
void query(int point, int s, int e, int sx, int ex, int sy, int ey, int num){
    if(e<sx||s>ex)return;
    if(sx<=s&&e<=ex){
        tree[point].query(sy, ey, num);
        return;
    }
    query(point*2, s, (s+e)/2, sx, ex, sy, ey, num);
    query(point*2+1, (s+e)/2+1, e, sx, ex, sy, ey, num);
}
void init(int point, int s, int e){
    tree[point].init();
    if(s==e)return;
    init(point*2, s, (s+e)/2);
    init(point*2+1, (s+e)/2+1, e);
}

int main(){
    scanf("%d", &n);
    for(int i=1; i<=n; i++){
        scanf("%d %d %d", &arr[i].F.F, &arr[i].F.S, &arr[i].S.F);
        idx.eb(arr[i].F.F-arr[i].S.F);
        idx.eb(arr[i].F.F+arr[i].S.F);
        arr[i].S.S=i;
    }
    sort(arr+1, arr+n+1, cmp);
    svec(idx); press(idx);
    for(int i=1; i<=n; i++){
        l[i]=lower_bound(all(idx), arr[i].F.F-arr[i].S.F)-idx.begin()+1;
        r[i]=lower_bound(all(idx), arr[i].F.F+arr[i].S.F)-idx.begin()+1;
        update(1, 1, idx.size(), l[i], mp(arr[i].F.S-arr[i].S.F, i));
        update(1, 1, idx.size(), l[i], mp(arr[i].F.S+arr[i].S.F, i));
        update(1, 1, idx.size(), r[i], mp(arr[i].F.S-arr[i].S.F, i));
        update(1, 1, idx.size(), r[i], mp(arr[i].F.S+arr[i].S.F, i));
    }
    init(1, 1, idx.size());
    for(int i=1; i<=n; i++){
        if(ans[arr[i].S.S])continue;
        query(1, 1, idx.size(), l[i], r[i], arr[i].F.S-arr[i].S.F, arr[i].F.S+arr[i].S.F, i);
    }
    for(int i=1; i<=n; i++)printf("%d ", ans[i]);
}

Compilation message

circle_selection.cpp: In member function 'void NODE::query(int, int, int)':
circle_selection.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |             if(nw>=vc.size()||vc[nw].F>e)break;
      |                ~~^~~~~~~~~~~
circle_selection.cpp: In member function 'void NODE::init()':
circle_selection.cpp:47:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         for(int i=0; i<par.size(); i++)par[i]=i;
      |                      ~^~~~~~~~~~~
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:73:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   73 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
circle_selection.cpp:75:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   75 |         scanf("%d %d %d", &arr[i].F.F, &arr[i].F.S, &arr[i].S.F);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 113016 KB Output is correct
2 Correct 79 ms 113016 KB Output is correct
3 Correct 76 ms 113016 KB Output is correct
4 Correct 75 ms 113036 KB Output is correct
5 Correct 79 ms 113212 KB Output is correct
6 Correct 76 ms 113144 KB Output is correct
7 Correct 76 ms 113144 KB Output is correct
8 Correct 76 ms 113184 KB Output is correct
9 Correct 75 ms 113144 KB Output is correct
10 Correct 78 ms 113144 KB Output is correct
11 Correct 76 ms 113180 KB Output is correct
12 Correct 76 ms 113104 KB Output is correct
13 Correct 76 ms 113180 KB Output is correct
14 Correct 76 ms 113144 KB Output is correct
15 Correct 77 ms 113148 KB Output is correct
16 Correct 80 ms 113784 KB Output is correct
17 Correct 92 ms 113964 KB Output is correct
18 Correct 80 ms 113784 KB Output is correct
19 Correct 107 ms 118516 KB Output is correct
20 Correct 104 ms 118388 KB Output is correct
21 Correct 109 ms 118388 KB Output is correct
22 Correct 109 ms 118392 KB Output is correct
23 Correct 110 ms 118384 KB Output is correct
24 Correct 106 ms 118388 KB Output is correct
25 Correct 110 ms 118380 KB Output is correct
26 Correct 112 ms 118388 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3103 ms 525096 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 113016 KB Output is correct
2 Correct 1228 ms 231768 KB Output is correct
3 Execution timed out 3096 ms 535044 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3107 ms 529888 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 113016 KB Output is correct
2 Correct 79 ms 113016 KB Output is correct
3 Correct 76 ms 113016 KB Output is correct
4 Correct 75 ms 113036 KB Output is correct
5 Correct 79 ms 113212 KB Output is correct
6 Correct 76 ms 113144 KB Output is correct
7 Correct 76 ms 113144 KB Output is correct
8 Correct 76 ms 113184 KB Output is correct
9 Correct 75 ms 113144 KB Output is correct
10 Correct 78 ms 113144 KB Output is correct
11 Correct 76 ms 113180 KB Output is correct
12 Correct 76 ms 113104 KB Output is correct
13 Correct 76 ms 113180 KB Output is correct
14 Correct 76 ms 113144 KB Output is correct
15 Correct 77 ms 113148 KB Output is correct
16 Correct 80 ms 113784 KB Output is correct
17 Correct 92 ms 113964 KB Output is correct
18 Correct 80 ms 113784 KB Output is correct
19 Correct 107 ms 118516 KB Output is correct
20 Correct 104 ms 118388 KB Output is correct
21 Correct 109 ms 118388 KB Output is correct
22 Correct 109 ms 118392 KB Output is correct
23 Correct 110 ms 118384 KB Output is correct
24 Correct 106 ms 118388 KB Output is correct
25 Correct 110 ms 118380 KB Output is correct
26 Correct 112 ms 118388 KB Output is correct
27 Correct 154 ms 124144 KB Output is correct
28 Correct 154 ms 124144 KB Output is correct
29 Correct 160 ms 124144 KB Output is correct
30 Correct 159 ms 124272 KB Output is correct
31 Correct 164 ms 124396 KB Output is correct
32 Correct 152 ms 124272 KB Output is correct
33 Correct 1091 ms 231160 KB Output is correct
34 Correct 1136 ms 233296 KB Output is correct
35 Correct 1160 ms 233432 KB Output is correct
36 Correct 1166 ms 234004 KB Output is correct
37 Correct 1169 ms 234072 KB Output is correct
38 Correct 1177 ms 234020 KB Output is correct
39 Correct 662 ms 176984 KB Output is correct
40 Correct 658 ms 176604 KB Output is correct
41 Correct 656 ms 176836 KB Output is correct
42 Correct 658 ms 181436 KB Output is correct
43 Correct 1109 ms 233820 KB Output is correct
44 Correct 1104 ms 234064 KB Output is correct
45 Correct 1088 ms 233944 KB Output is correct
46 Correct 1082 ms 233952 KB Output is correct
47 Correct 1085 ms 233692 KB Output is correct
48 Correct 1105 ms 233944 KB Output is correct
49 Correct 1093 ms 234204 KB Output is correct
50 Correct 1110 ms 233940 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 113016 KB Output is correct
2 Correct 79 ms 113016 KB Output is correct
3 Correct 76 ms 113016 KB Output is correct
4 Correct 75 ms 113036 KB Output is correct
5 Correct 79 ms 113212 KB Output is correct
6 Correct 76 ms 113144 KB Output is correct
7 Correct 76 ms 113144 KB Output is correct
8 Correct 76 ms 113184 KB Output is correct
9 Correct 75 ms 113144 KB Output is correct
10 Correct 78 ms 113144 KB Output is correct
11 Correct 76 ms 113180 KB Output is correct
12 Correct 76 ms 113104 KB Output is correct
13 Correct 76 ms 113180 KB Output is correct
14 Correct 76 ms 113144 KB Output is correct
15 Correct 77 ms 113148 KB Output is correct
16 Correct 80 ms 113784 KB Output is correct
17 Correct 92 ms 113964 KB Output is correct
18 Correct 80 ms 113784 KB Output is correct
19 Correct 107 ms 118516 KB Output is correct
20 Correct 104 ms 118388 KB Output is correct
21 Correct 109 ms 118388 KB Output is correct
22 Correct 109 ms 118392 KB Output is correct
23 Correct 110 ms 118384 KB Output is correct
24 Correct 106 ms 118388 KB Output is correct
25 Correct 110 ms 118380 KB Output is correct
26 Correct 112 ms 118388 KB Output is correct
27 Execution timed out 3103 ms 525096 KB Time limit exceeded
28 Halted 0 ms 0 KB -