Submission #2670162

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Source Code Expand

#include<bits/stdc++.h>
#define N 20005
using namespace std;
int f[N][2],n,Z,W,a[N];bool vis[N][2];
int dp(int last,int who){
	if (vis[last][who]) return f[last][who];
	int ret=abs(a[n]-a[last]);
	vis[last][who]=1;
	if (!who){
		for (int i=last+1;i<n;i++) ret=max(ret,abs(dp(i,!who)));
		return f[last][who]=ret;
	}
	if (who){
		for (int i=last+1;i<n;i++) ret=min(ret,abs(dp(i,!who)));
		return f[last][who]=ret;
	}
}
int main(){
	scanf("%d%d%d",&n,&Z,&W);a[0]=W;
	for (int i=1;i<=n;i++) scanf("%d",&a[i]);
	printf("%d\n",abs(dp(0,0)));
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:19:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&n,&Z,&W);a[0]=W;
                          ^
./Main.cpp:20:42: 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]);
                                          ^

Judge Result