Submission #1612742

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Source Code Expand

#include<bits/stdc++.h>
const int N=200007;
int a[N],n,m,ar[N],b[N],c[N];
void upd(int x){c[x]=b[x-1]+b[x]+b[x+1]>>1;}
int main(){
	scanf("%d",&m);
	n=m*2-1;
	for(int i=1;i<=n;++i)scanf("%d",a+i),ar[a[i]]=i;
	for(int i=1;i<=n;++i){
		int x=ar[i];
		b[x]=1;
		upd(x-1),upd(x),upd(x+1);
		if(c[m])return printf("%d",i),0;
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:6:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&m);
                ^
./Main.cpp:8:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;++i)scanf("%d",a+i),ar[a[i]]=i;
                                                 ^

Judge Result