Submission #1706608

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;

#define REP(i,n) for(int (i)=0;(i)<(n);(i)++)
#define REP2(i,s,n) for(int (i)=(s);(i)<(n);(i)++)


int main(){
	int n;
	int i,j;
	int temp;
	int dx[4] = {-1,0,0,1};
	int dy[4] = {0,-1,1,0};

	scanf("%d",&n);

	int c[n];
	REP(i,n){
		scanf("%d",c+i);
	}

	int divisor = 0;
	double p = 0.;
	REP(i,n){
		divisor = 0;
		REP(j,n){
			if(i==j){continue;}
			if(c[i]%c[j]==0){
				divisor++;
			}
			
		}
		if(divisor%2==0){
			p+=((divisor+2.)/(2.*divisor+2.));
		}else{
			p+=1./2.;
		}
	}

	
	printf("%.7f\n",p);

	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:15:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:19:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",c+i);
                  ^

Judge Result