CSES - Datatähti Open 2019 - Results
Submission details
Task:Function
Sender:toonewbie
Submission time:2019-01-18 11:54:13
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
Test results
testverdicttimegroup
#10.02 s1details
#20.02 s1details
#3ACCEPTED0.01 s1details
#40.01 s1details
#5ACCEPTED0.05 s1details
#60.02 s1details
#70.03 s1details
#8ACCEPTED0.04 s1details
#90.02 s1details
#100.02 s2details
#110.02 s2details
#12ACCEPTED0.02 s2details
#130.02 s2details
#14ACCEPTED0.07 s2details
#150.06 s2details
#160.05 s2details
#170.05 s2details
#18ACCEPTED0.04 s2details
#19ACCEPTED0.04 s2details
#200.04 s2details
#210.01 s2details
#22ACCEPTED0.32 s2details
#230.33 s2details
#240.32 s2details
#25ACCEPTED0.33 s2details
#260.33 s2details
#270.31 s2details
#28ACCEPTED0.17 s2details
#290.24 s2details
#300.03 s2details
#31ACCEPTED0.02 s2details
#320.01 s2details
#330.02 s2details
#34ACCEPTED0.05 s2details
#35ACCEPTED0.34 s2details

Compiler report

input/code.cpp: In function 'int is_prime(int)':
input/code.cpp:50:25: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if (n <= 1 || n > 3 && (n % 2 == 0 || n % 3 == 0))
                   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
input/code.cpp: In function 'int main()':
input/code.cpp:82:24: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
             if (a >= 0 && b <= 0 || a <= 0 && b >= 0) {
                 ~~~~~~~^~~~~~~~~

Code

/****Author: Barish Namazov****/
#include <bits/stdc++.h>

using namespace std;

/***TEMPLATE***/
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()

#define F first
#define S second
#define pb push_back

#define endl '\n'

const int max4 = 10004;
const int maxx = 100005;
const int max6 = 1000006;
const int lg5 = 17;

const int INF = 2 * 1000000007;
const long long INFLL = 4LL * 1000000000 * 1000000000;

/***************/

int powmod (int a, int b, int mod) {
    int res = 1; a %= mod;
    for (; b; b >>= 1) {
        if (b & 1) {
            res = 1LL * res * a % mod;
        }
        a = 1LL * a * a % mod;
    }
    return res;
}

int gcd (int a, int b) {
    while (b > 0) {
        int t = a % b;
        a = b, b = t;
    }
    return a;
}

int lcm (int a, int b) {
    return (a / gcd (a, b)) * b;
}

int is_prime (int n) {
    if (n <= 1 || n > 3 && (n % 2 == 0 || n % 3 == 0))
        return 0;
    for (int i = 5, t = 2; i * i <= n; i += t, t = 6 - t)
        if (n % i == 0)
            return 0;
    return 1;
}

/******Don't forget to use long long when needed!!******/

long long x[max6], y[max6];
int main() {
    //freopen("in.txt","r",stdin);
    //freopen("out.txt","w",stdout);
    ios_base :: sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    int T;
    cin >> T;
    while(T --) {
        int n;
        cin >> n;
        for (int i = 0; i < n; i++) {
            cin >> x[i] >> y[i];
        }
        x[n] = x[0];
        y[n] = y[0];
        y[n+1] = y[1];
        x[n+1] = x[1];
        int ok = 1;
        for (int i = 0; i < n-1; i++) {
            long long a = (x[i+1]-x[i])*(y[i+2]-y[i+1]) - (x[i+2]-x[i+1])*(y[i+1]-y[i]);
            long long b = (x[i+2]-x[i+1])*(y[i+3]-y[i+2]) - (x[i+3]-x[i+2])*(y[i+2]-y[i+1]);
            if (a >= 0 && b <= 0 || a <= 0 && b >= 0) {
                ok = 0;
                break;
            }
        }
        cout << (ok ? "YES" : "NO") << endl;
    }
    return 0;
}

Test details

Test 1

Group: 1

Verdict:

input
12
2
0 0
1 1
5
...

correct output
YES
YES
NO
YES
YES
...

user output
NO
NO
NO
NO
YES
...

Test 2

Group: 1

Verdict:

input
100
2
92 30
22 44
2
...

correct output
YES
YES
YES
YES
YES
...

user output
NO
NO
NO
NO
NO
...

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:

input
100
4
87 81
-84 42
18 -46
...

correct output
YES
YES
YES
YES
YES
...

user output
NO
NO
NO
NO
NO
...

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:

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:

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:

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

correct output
YES
NO
NO
NO
NO
...

user output
NO
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
NO
NO
NO
NO
YES
...

Test 11

Group: 2

Verdict:

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

correct output
YES
YES
YES
YES
YES
...

user output
NO
NO
NO
NO
NO
...

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:

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

correct output
YES
NO
YES
NO
NO
...

user output
YES
NO
NO
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:

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

correct output
YES
YES
YES
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 16

Group: 2

Verdict:

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

correct output
NO
YES
YES
YES
NO
...

user output
NO
NO
NO
NO
NO
...

Test 17

Group: 2

Verdict:

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

correct output
YES
YES
YES
YES
YES
...

user output
NO
NO
NO
NO
NO
...

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:

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
NO
NO
NO
NO
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:

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

correct output
YES

user output
NO

Test 24

Group: 2

Verdict:

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

correct output
YES

user output
NO

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:

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

correct output
NO
YES
YES
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 27

Group: 2

Verdict:

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

correct output
YES
YES
NO
YES
YES
...

user output
NO
NO
NO
NO
NO
...

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:

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

correct output
YES
NO
NO
NO
NO
...

user output
NO
NO
NO
NO
NO
...

Test 30

Group: 2

Verdict:

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

correct output
YES
YES
YES
YES
YES
...

user output
NO
NO
NO
NO
NO
...

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:

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

correct output
NO
NO
NO
NO
YES
...

user output
NO
NO
NO
YES
NO
...

Test 33

Group: 2

Verdict:

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

correct output
NO
NO
YES
NO
NO
...

user output
NO
NO
NO
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
...