CSES - Datatähti Open 2019 - Results
Submission details
Task:Function
Sender:Rudy358
Submission time:2019-01-18 19:20:11
Language:C++
Status:READY
Result:45
Feedback
groupverdictscore
#1ACCEPTED45
#20
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1details
#2ACCEPTED0.03 s1details
#3ACCEPTED0.02 s1details
#4ACCEPTED0.03 s1details
#5ACCEPTED0.06 s1details
#6ACCEPTED0.02 s1details
#7ACCEPTED0.02 s1details
#8ACCEPTED0.03 s1details
#9ACCEPTED0.02 s1details
#100.03 s2details
#11ACCEPTED0.02 s2details
#12ACCEPTED0.02 s2details
#13ACCEPTED0.03 s2details
#14ACCEPTED0.07 s2details
#15ACCEPTED0.07 s2details
#16ACCEPTED0.07 s2details
#17ACCEPTED0.07 s2details
#18ACCEPTED0.06 s2details
#19ACCEPTED0.05 s2details
#20ACCEPTED0.06 s2details
#210.02 s2details
#22ACCEPTED0.54 s2details
#23ACCEPTED0.49 s2details
#24ACCEPTED0.48 s2details
#25ACCEPTED0.58 s2details
#26ACCEPTED0.51 s2details
#27ACCEPTED0.56 s2details
#28ACCEPTED0.31 s2details
#29ACCEPTED0.41 s2details
#30ACCEPTED0.02 s2details
#31ACCEPTED0.02 s2details
#32ACCEPTED0.01 s2details
#33ACCEPTED0.03 s2details
#34ACCEPTED0.07 s2details
#35ACCEPTED0.54 s2details

Code

#include <bits/stdc++.h>
using namespace std;
#define x first
#define y second
#define ll long long
#define pi pair<int,int>
#define pl pair<ll,ll>
#define pd pair<double,double>
#define ld long double
#define pld pair<ld,ld>
#define lg length()
#define sz size()
#define vi vector<int>
#define vl vector<ll>
#define vp vector<pi>
#define vpl vector<pl>
#define pb push_back
#define INF 1000000005
#define LINF 1000000000000000005

int t,n,l,r;

pl p[1000005];

long double a[1000005],eps=0.00000000000000000000001,PI=acos(-1),d;

int32_t main(){
	ios_base :: sync_with_stdio(0); cin.tie(); cout.tie();
#ifdef LOCAL_DEFINE
	ifstream cin("input.in");
#endif
	cout << fixed << setprecision(20);
	cin >> t;
	while(t--){
		cin >> n;
		for(int i=1;i<=n;i++) cin >> p[i].x >> p[i].y;
		for(int i=1;i<n;i++){
			if(p[i].x==p[i+1].x && p[i].y<p[i+1].y) a[i]=0;
			else if(p[i].x<p[i+1].x && p[i].y<p[i+1].y) a[i]=atan((long double)(p[i+1].x-p[i].x)/(p[i+1].y-p[i].y));
			else if(p[i].x<p[i+1].x && p[i].y==p[i+1].y) a[i]=PI/2;
			else if(p[i].x<p[i+1].x && p[i].y>p[i+1].y) a[i]=PI+atan((long double)(p[i+1].x-p[i].x)/(p[i+1].y-p[i].y));
			else if(p[i].x==p[i+1].x && p[i].y>p[i+1].y) a[i]=PI;
			else if(p[i].x>p[i+1].x && p[i].y>p[i+1].y) a[i]=PI+atan((long double)(p[i+1].x-p[i].x)/(p[i+1].y-p[i].y));
			else if(p[i].x>p[i+1].x && p[i].y==p[i+1].y) a[i]=3*PI/2;
			else if(p[i].x>p[i+1].x && p[i].y<p[i+1].y) a[i]=2*PI+atan((long double)(p[i+1].x-p[i].x)/(p[i+1].y-p[i].y));
		}
		int pos=0;
		sort(a+1,a+n);
		for(int i=1;i<n;i++){
			//cout << a[i] << ' ';
			if(a[i]-PI<-eps){
				l=i-1; if(l<1) l=n-1;
				r=i+1; if(r>n-1) r=1;
				if(a[l]-a[i]>eps && a[l]-a[i]-PI<-eps) pos=1;
				if(a[r]-a[i]<-eps || a[r]-a[i]-PI>eps) pos=1;
			}
			else{
				l=i-1; if(l<1) l=n-1;
				r=i+1; if(r>n-1) r=1;
				if(a[l]-a[i]>eps || a[l]-a[i]+PI<-eps) pos=1;
				if(a[r]-a[i]<-eps && a[r]-a[i]+PI>eps) pos=1;
			}
		}
		int dif=1;
		for(int i=2;i<n;i++)
			if(abs(a[i]-a[1])>eps) dif=0;
		//cout << mx << '\n';
		//cout << mx-mn-PI << '\n';
		if(pos || dif) cout << "YES\n";
		else cout << "NO\n";
	}
	
#ifdef LOCAL_DEFINE
	cerr << "\nTime elapsed: " << 1.0*clock()/CLOCKS_PER_SEC << " \n";
#endif
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
12
2
0 0
1 1
5
...

correct output
YES
YES
NO
YES
YES
...

user output
YES
YES
NO
YES
YES
...

Test 2

Group: 1

Verdict: ACCEPTED

input
100
2
92 30
22 44
2
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 3

Group: 1

Verdict: ACCEPTED

input
100
3
-55 -98
-59 -55
-2 88
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 4

Group: 1

Verdict: ACCEPTED

input
100
4
87 81
-84 42
18 -46
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 5

Group: 1

Verdict: ACCEPTED

input
100
1000
-81 38
92 -21
-10 -65
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 6

Group: 1

Verdict: ACCEPTED

input
100
110
-99 -9
-98 -9
-96 -8
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 7

Group: 1

Verdict: ACCEPTED

input
100
78
-100 95
-99 96
-98 95
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 8

Group: 1

Verdict: ACCEPTED

input
100
201
-100 97
-100 96
-99 99
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 9

Group: 1

Verdict: ACCEPTED

input
100
45
-100 89
-100 90
-97 90
...

correct output
YES
NO
NO
NO
NO
...

user output
YES
NO
NO
NO
NO
...

Test 10

Group: 2

Verdict:

input
13
2
0 0
1 1
5
...

correct output
YES
YES
NO
YES
YES
...

user output
YES
YES
NO
YES
YES
...

Test 11

Group: 2

Verdict: ACCEPTED

input
100
2
-517113909 -39540276
-209411537 -831819487
2
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 12

Group: 2

Verdict: ACCEPTED

input
100
3
-991349544 139282777
646238126 16140762
-4488261 817588303
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 13

Group: 2

Verdict: ACCEPTED

input
100
4
891187584 -889373775
-453505448 -469134344
-683807769 8725517
...

correct output
YES
NO
YES
NO
NO
...

user output
YES
NO
YES
NO
NO
...

Test 14

Group: 2

Verdict: ACCEPTED

input
100
1000
-866614983 -994037153
775605588 -328510132
390868551 927606059
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 15

Group: 2

Verdict: ACCEPTED

input
100
1000
-911073332 -1000000000
-905159999 -1000000000
-904949593 -999999999
...

correct output
YES
YES
YES
NO
NO
...

user output
YES
YES
YES
NO
NO
...

Test 16

Group: 2

Verdict: ACCEPTED

input
100
1000
-1000000000 950042028
-946551105 -1000000000
-940508390 -1000000000
...

correct output
NO
YES
YES
YES
NO
...

user output
NO
YES
YES
YES
NO
...

Test 17

Group: 2

Verdict: ACCEPTED

input
100
1000
-949977239 -1000000000
-948279892 -1000000000
-947497811 -999999999
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 18

Group: 2

Verdict: ACCEPTED

input
100
806
-899 -1000
-898 -1000
-896 -999
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 19

Group: 2

Verdict: ACCEPTED

input
100
777
-1000 914
-1000 915
-999 916
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 20

Group: 2

Verdict: ACCEPTED

input
100
775
-999 998
-995 -1000
-994 -1000
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 21

Group: 2

Verdict:

input
13
2
0 0
1 1
5
...

correct output
YES
YES
NO
YES
YES
...

user output
YES
YES
NO
YES
YES
...

Test 22

Group: 2

Verdict: ACCEPTED

input
1
999748
-995394098 -1000000000
-995392159 -1000000000
-995386584 -999999999
...

correct output
NO

user output
NO

Test 23

Group: 2

Verdict: ACCEPTED

input
1
1000000
-954368893 -1000000000
-954366895 -1000000000
-954364896 -999999999
...

correct output
YES

user output
YES

Test 24

Group: 2

Verdict: ACCEPTED

input
1
1000000
-1000000000 928772368
-1000000000 928772506
-999999999 928772642
...

correct output
YES

user output
YES

Test 25

Group: 2

Verdict: ACCEPTED

input
1
999754
-901705699 -1000000000
-901702695 -1000000000
-901702062 -999999999
...

correct output
NO

user output
NO

Test 26

Group: 2

Verdict: ACCEPTED

input
100
10000
-1000000000 919783772
-918885599 -1000000000
-918825263 -1000000000
...

correct output
NO
YES
YES
NO
NO
...

user output
NO
YES
YES
NO
NO
...

Test 27

Group: 2

Verdict: ACCEPTED

input
10
99998
-997024120 -77018772
-997011201 -77017738
-996986132 -77015834
...

correct output
YES
YES
NO
YES
YES
...

user output
YES
YES
NO
YES
YES
...

Test 28

Group: 2

Verdict: ACCEPTED

input
100
7934
-10000 9905
-10000 9906
-9999 9906
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 29

Group: 2

Verdict: ACCEPTED

input
100
9710
-99754 -6983
-99786 -6055
-99751 -6548
...

correct output
YES
NO
NO
NO
NO
...

user output
YES
NO
NO
NO
NO
...

Test 30

Group: 2

Verdict: ACCEPTED

input
100
2
802396401 -641287652
30956766 -527704723
2
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 31

Group: 2

Verdict: ACCEPTED

input
100
3
755025461 -953536159
-402145543 137775005
-700733185 821755784
...

correct output
YES
YES
YES
YES
YES
...

user output
YES
YES
YES
YES
YES
...

Test 32

Group: 2

Verdict: ACCEPTED

input
100
4
-673213071 571383249
-963633735 -859013318
-591788323 791136643
...

correct output
NO
NO
NO
NO
YES
...

user output
NO
NO
NO
NO
YES
...

Test 33

Group: 2

Verdict: ACCEPTED

input
100
5
-124483012 623794901
233757283 -234519096
-987338502 737259422
...

correct output
NO
NO
YES
NO
NO
...

user output
NO
NO
YES
NO
NO
...

Test 34

Group: 2

Verdict: ACCEPTED

input
100
1000
154383911 872030445
-9594726 190227899
908758769 -9615631
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 35

Group: 2

Verdict: ACCEPTED

input
100
10000
642800667 -694556052
-343795089 -341227394
800920828 676674460
...

correct output
NO
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...