Submission #2672279

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second
template<typename A, typename B> inline bool chmax(A &a, B b) { if (a<b) { a=b; return 1; } return 0; }
template<typename A, typename B> inline bool chmin(A &a, B b) { if (a>b) { a=b; return 1; } return 0; }
typedef long long ll;
typedef pair<int, int> pii;
const ll INF = 1e9+100;
const ll INFL = 1e18+100;
const ll MOD = 1e9+7;
const bool debug = 0;
//-----------------------------------------------//

int N, Z, W;
int a[2000];
int dp[2000][2];

int dfs(int idx, int turn) {
	if (~dp[idx][turn]) return dp[idx][turn];
	
	int cur;
	if (idx == 0) cur = !turn ? W : Z;
	else cur = a[idx - 1];
	
	int res;
	if (turn == 0) {
		res = 0;
		FOR(i, idx, N - 1) chmax(res, dfs(i + 1, turn^1));
		chmax(res, abs(cur - a[N - 1]));
	}	
	else {
		res = INF;
		FOR(i, idx, N - 1) chmin(res, dfs(i + 1, turn^1));
		chmin(res, abs(cur - a[N - 1]));
	}
	
	return dp[idx][turn] = res;
}

int main() {
	cin >> N >> Z >> W;
	REP(i, N) scanf("%d", a + i);
	
	memset(dp, -1, sizeof(dp));
	cout << dfs(0, 0) << endl;
	
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:46:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  REP(i, N) scanf("%d", a + i);
                              ^

Judge Result