Submission #4032242

---

Source Code Expand

#include<cstdio>
#include<algorithm>
#include <cmath>
using namespace std;
using ll = long long;

int main(){
	int N, Z, W;
	scanf("%d %d %d", &N, &Z, &W);
	int a[N + 1];
	a[0] = W;
	for (int i = 1; i <= N; ++i) scanf("%d", a + i);
	int dp[4][N];
	dp[0][N - 1] = 0;
	dp[2][N - 1] = 1000000000;
	dp[1][N - 1] = dp[3][N - 1] = abs(a[N] - a[N - 1]);
	for (int i = N - 2; i >= 0; --i){
		dp[0][i] = max(dp[0][i + 1], dp[3][i + 1]);
		dp[1][i] = max(dp[0][i], abs(a[N] - a[i]));
		dp[2][i] = min(dp[2][i + 1], dp[1][i + 1]);
		dp[3][i] = min(dp[2][i], abs(a[N] - a[i]));
	}
	printf("%d\n", dp[1][0]);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d", &N, &Z, &W);
                               ^
./Main.cpp:12:49: 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);
                                                 ^

Judge Result