Submission #1989771


Source Code Expand

#include <cstdio>
int a[100010],sum[2],n;
bool flag;
int gcd(int a,int b)
{
	if (b==0) return a;
	else return gcd(b,a%b);
}
int main()
{
	scanf("%d",&n);
	for (int i=1;i<=n;i++)
	{
		scanf("%d",&a[i]);
		if (a[i]>1) sum[a[i]&1]++;
	}
	if (n==1)
	{
		if (a[1]&1) printf("Second\n");
		else printf("First\n");
		return 0;
	}
	flag=false;
	while (1)
	{
		if (!sum[0]&&!sum[1])
		{
			if (!flag) printf("Second\n");
			else printf("First\n");
			return 0;
		}
		if (sum[0]&1)
		{
			if (!flag) printf("First\n");
			else printf("Second\n");
			return 0;
		}
		if (sum[1]>1)
		{
			if (!flag) printf("Second\n");
			else printf("First\n");
			return 0;
		}
		if (sum[1]==1)
		{
			int GCD=-1;
			for (int i=1;i<=n;i++)
				if (a[i]>1)
				{
					if (a[i]&1) a[i]--;
					if (GCD==-1) GCD=a[i];
					else GCD=gcd(a[i],GCD);
				}
			sum[0]=sum[1]=0;
			for (int i=1;i<=n;i++)
				if (a[i]>1) a[i]/=GCD,sum[a[i]&1]++;
		}
		flag^=1;
	}
	return 0;
}
//all is 1: who faces even number of even number, lose./odd number of even number, win.

Submission Info

Submission Time
Task D - Decrementing
User vjudge5
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1029 Byte
Status WA
Exec Time 29 ms
Memory 512 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:14:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
                    ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 1000
Status
AC × 2
WA × 1
AC × 41
WA × 2
Set Name Test Cases
Sample sample1.txt, sample2.txt, sample3.txt
All sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in3.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in4.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt
Case Name Status Exec Time Memory
in1.txt AC 12 ms 512 KB
in10.txt AC 12 ms 512 KB
in11.txt AC 17 ms 512 KB
in12.txt AC 12 ms 512 KB
in13.txt AC 15 ms 512 KB
in14.txt AC 26 ms 512 KB
in15.txt AC 15 ms 512 KB
in16.txt AC 25 ms 512 KB
in17.txt AC 14 ms 512 KB
in18.txt AC 29 ms 512 KB
in19.txt AC 16 ms 512 KB
in2.txt AC 12 ms 512 KB
in20.txt AC 26 ms 512 KB
in21.txt AC 18 ms 512 KB
in22.txt AC 18 ms 512 KB
in23.txt AC 18 ms 512 KB
in24.txt AC 18 ms 512 KB
in25.txt AC 17 ms 512 KB
in26.txt AC 18 ms 512 KB
in27.txt AC 18 ms 512 KB
in28.txt AC 19 ms 512 KB
in29.txt AC 17 ms 512 KB
in3.txt AC 12 ms 512 KB
in30.txt AC 18 ms 512 KB
in31.txt AC 12 ms 512 KB
in32.txt AC 12 ms 512 KB
in33.txt AC 18 ms 512 KB
in34.txt AC 20 ms 512 KB
in35.txt AC 18 ms 512 KB
in36.txt AC 1 ms 128 KB
in37.txt AC 1 ms 128 KB
in4.txt AC 12 ms 512 KB
in5.txt AC 12 ms 512 KB
in6.txt AC 12 ms 512 KB
in7.txt AC 12 ms 512 KB
in8.txt AC 12 ms 512 KB
in9.txt AC 12 ms 512 KB
sample1.txt AC 1 ms 128 KB
sample2.txt AC 1 ms 128 KB
sample3.txt WA 1 ms 128 KB