oj.uz

Submission #107303

# Submission time Handle Problem Language Result Execution time Memory
107303 2019-04-23T07:48:58 Z leduykhongngu Circle selection (APIO18_circle_selection) C++17
72 / 100
 3000 ms 66068 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("Ofast")
#define FOR(i,a,b) for (int i=(a),_b=(b); i<=_b; ++i)
#define FORR(i,a,b) for (int i=(a),_b=(b); i>=_b; --i)
#define REP(i,b) for (int i=0,_b=(b); i<_b; ++i)
#define endl '\n'
#define sz(x) (int) x.size()
#define mod %
#define fillchar(x,y,z) memset(x,z,y)
#define pii pair<int,int>
#define fi first
#define se second
#define mp make_pair
typedef long long int64;
typedef unsigned long long qword;
using namespace std;
int ReadInt()
{
    char c;
    for (c = getchar(); c!='-'&&(c < '0' || c > '9'); c = getchar());
    int nega=0;
    int ans = c - '0';
    if (c=='-') nega=1,ans=0;
    for (c = getchar(); c >= '0' && c <= '9'; c = getchar())
        ans = ans * 10 + c - '0';
    if (nega) return -ans;
    return ans;
}
void WriteInt(int x)
{
    if (x > 9) WriteInt(x / 10);
    putchar(x % 10 + '0');
}
const int maxn=3e5+5;
inline int64 sqr(int64 x)
{
    return x*x;
}
struct Circle{
    int64 x,y,r;
    int id;

    bool IsIntersect(const Circle &c)
    {
        return sqr(x-c.x)+sqr(y-c.y)<=sqr(r+c.r);
    }
}cir[maxn];
bool operator <(const Circle &b,const Circle &c)
    {
        return mp(-b.r,b.id)<mp(-c.r,c.id);
    }
vector<set<pii> > Point;
vector<int> X;
int n;
int ans[maxn];
pii tmp[maxn];
int main()
{
    #ifdef meomeomeooooo
        freopen("input.txt","r",stdin);
        //freopen(".txt","w",stdout);
    #endif // meomeomeooooo
    iostream::sync_with_stdio(false);
    cin.tie(0);
    n=ReadInt();
    set<Circle> myset;
    FOR(i,1,n) {
        //cin >> cir[i].x >> cir[i].y >> cir[i].r;
        cir[i].x=ReadInt(); cir[i].y=ReadInt(); cir[i].r=ReadInt();
        X.push_back(cir[i].x);
        cir[i].id=i;
        myset.insert(cir[i]);
    }
    sort(X.begin(),X.end());
    X.resize(unique(X.begin(),X.end())-X.begin());
    #define GetDec(x) (lower_bound(X.begin(),X.end(),x)-X.begin())
    Point.resize(X.size());
    FOR(i,1,n) {
        int x=GetDec(cir[i].x);
        Point[x].insert({cir[i].y,cir[i].id});
    }
    while (myset.size()) {
        Circle cur=*myset.begin(); myset.erase(cur);
        ans[cur.id]=cur.id;
        int x=cur.x,y=cur.y,r=cur.r;
        int Lx=max(1ll*x-2*r,-1000000000ll);
        int Rx=min(1ll*x+2*r,1000000000ll);
        Lx=GetDec(Lx);
        int Ly=max(1ll*y-2*r,-1000000000ll);
        int Ry=min(1ll*y+2*r,1000000000ll);

        for (int i=Lx; i<X.size()&&X[i]<=Rx; ++i) {
            int top=0;
            int64 meomeo=sqrt(4ll*r*r-sqr(X[i]-x));
//            int Ly=max(1ll*y-meomeo,-1000000000ll);
//            int Ry=min(1ll*y+meomeo,1000000000ll);
            for (auto j=Point[i].lower_bound(mp(Ly,0)); j!=Point[i].end()&&(*j).fi<=Ry; ++j) {
                int id=(*j).se;
                if (cur.IsIntersect(cir[id])) {
                    assert(ans[id]==0||ans[id]==cur.id);
                    ans[id]=cur.id;
                    myset.erase(cir[id]);
                    tmp[++top]=*j;
                }
            }
            FOR(j,1,top)
                Point[i].erase(tmp[j]);
        }
    }
    FOR(i,1,n) {
        WriteInt(ans[i]); putchar(' ');
    }
    return 0;
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:92:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int i=Lx; i<X.size()&&X[i]<=Rx; ++i) {
                        ~^~~~~~~~~
circle_selection.cpp:94:19: warning: unused variable 'meomeo' [-Wunused-variable]
             int64 meomeo=sqrt(4ll*r*r-sqr(X[i]-x));
                   ^~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 640 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 3 ms 512 KB Output is correct
19 Correct 10 ms 1380 KB Output is correct
20 Correct 10 ms 1480 KB Output is correct
21 Correct 10 ms 1408 KB Output is correct
22 Correct 10 ms 1408 KB Output is correct
23 Correct 13 ms 1408 KB Output is correct
24 Correct 10 ms 1408 KB Output is correct
25 Correct 12 ms 1408 KB Output is correct
26 Correct 10 ms 1408 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1254 ms 65752 KB Output is correct
2 Correct 1229 ms 66016 KB Output is correct
3 Correct 1227 ms 65652 KB Output is correct
4 Correct 1301 ms 66068 KB Output is correct
5 Correct 1066 ms 61156 KB Output is correct
6 Correct 1165 ms 65960 KB Output is correct
7 Correct 1167 ms 64996 KB Output is correct
8 Correct 1065 ms 65380 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 421 ms 22208 KB Output is correct
3 Correct 1591 ms 65860 KB Output is correct
4 Correct 1453 ms 66020 KB Output is correct
5 Correct 2284 ms 64100 KB Output is correct
6 Correct 811 ms 34408 KB Output is correct
7 Correct 288 ms 18288 KB Output is correct
8 Correct 31 ms 4088 KB Output is correct
9 Correct 1868 ms 65792 KB Output is correct
10 Execution timed out 3022 ms 63852 KB Time limit exceeded

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 868 ms 65776 KB Output is correct
2 Correct 626 ms 65764 KB Output is correct
3 Correct 2491 ms 65416 KB Output is correct
4 Correct 611 ms 65768 KB Output is correct
5 Correct 613 ms 65892 KB Output is correct
6 Correct 2120 ms 65088 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 640 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 3 ms 512 KB Output is correct
19 Correct 10 ms 1380 KB Output is correct
20 Correct 10 ms 1480 KB Output is correct
21 Correct 10 ms 1408 KB Output is correct
22 Correct 10 ms 1408 KB Output is correct
23 Correct 13 ms 1408 KB Output is correct
24 Correct 10 ms 1408 KB Output is correct
25 Correct 12 ms 1408 KB Output is correct
26 Correct 10 ms 1408 KB Output is correct
27 Correct 16 ms 2560 KB Output is correct
28 Correct 14 ms 2560 KB Output is correct
29 Correct 18 ms 2680 KB Output is correct
30 Correct 21 ms 2560 KB Output is correct
31 Correct 18 ms 2560 KB Output is correct
32 Correct 25 ms 2560 KB Output is correct
33 Correct 313 ms 22128 KB Output is correct
34 Correct 313 ms 22188 KB Output is correct
35 Correct 321 ms 22100 KB Output is correct
36 Correct 328 ms 22132 KB Output is correct
37 Correct 315 ms 22100 KB Output is correct
38 Correct 319 ms 22088 KB Output is correct
39 Correct 1308 ms 17520 KB Output is correct
40 Correct 1142 ms 17516 KB Output is correct
41 Correct 1278 ms 17520 KB Output is correct
42 Correct 263 ms 17468 KB Output is correct
43 Correct 178 ms 22188 KB Output is correct
44 Correct 199 ms 22256 KB Output is correct
45 Correct 178 ms 22096 KB Output is correct
46 Correct 209 ms 22280 KB Output is correct
47 Correct 187 ms 22124 KB Output is correct
48 Correct 179 ms 22128 KB Output is correct
49 Correct 182 ms 22128 KB Output is correct
50 Correct 199 ms 22176 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 640 KB Output is correct
17 Correct 3 ms 512 KB Output is correct
18 Correct 3 ms 512 KB Output is correct
19 Correct 10 ms 1380 KB Output is correct
20 Correct 10 ms 1480 KB Output is correct
21 Correct 10 ms 1408 KB Output is correct
22 Correct 10 ms 1408 KB Output is correct
23 Correct 13 ms 1408 KB Output is correct
24 Correct 10 ms 1408 KB Output is correct
25 Correct 12 ms 1408 KB Output is correct
26 Correct 10 ms 1408 KB Output is correct
27 Correct 1254 ms 65752 KB Output is correct
28 Correct 1229 ms 66016 KB Output is correct
29 Correct 1227 ms 65652 KB Output is correct
30 Correct 1301 ms 66068 KB Output is correct
31 Correct 1066 ms 61156 KB Output is correct
32 Correct 1165 ms 65960 KB Output is correct
33 Correct 1167 ms 64996 KB Output is correct
34 Correct 1065 ms 65380 KB Output is correct
35 Correct 2 ms 384 KB Output is correct
36 Correct 421 ms 22208 KB Output is correct
37 Correct 1591 ms 65860 KB Output is correct
38 Correct 1453 ms 66020 KB Output is correct
39 Correct 2284 ms 64100 KB Output is correct
40 Correct 811 ms 34408 KB Output is correct
41 Correct 288 ms 18288 KB Output is correct
42 Correct 31 ms 4088 KB Output is correct
43 Correct 1868 ms 65792 KB Output is correct
44 Execution timed out 3022 ms 63852 KB Time limit exceeded