Language: C++

#include <iostream>
#include<vector>
#include<algorithm>
#include<string>
#include<map>
#include<set>
#include<stack>
#include<queue>
#include<math.h>
using namespace std;
typedef long long ll;
#define int long long
#define double long double
typedef vector<int> VI;
typedef pair<int, int> pii;
typedef vector<pii> VP;
typedef vector<string> VS;
typedef priority_queue<int> PQ;
template<class T>bool chmax(T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b < a) { a = b; return 1; } return 0; }
#define fore(i,a) for(auto &i:a)
#define REP(i,n) for(int i=0;i<n;i++)
#define eREP(i,n) for(int i=0;i<=n;i++)
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define eFOR(i,a,b) for(int i=(a);i<=(b);++i)
#define SORT(c) sort((c).begin(),(c).end())
#define rSORT(c) sort((c).rbegin(),(c).rend())
#define LB(x,a) lower_bound((x).begin(),(x).end(),(a))
#define UB(x,a) upper_bound((x).begin(),(x).end(),(a))
#define INF 1000000000
#define LLINF 9223372036854775807
#define mod 1000000007
#define eps 1e-12 
//priority_queue<int,vector<int>, greater<int> > q2;



signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int N; cin >> N;
	VI A(N);
	REP(i, N)cin >> A[i];
	int ans = 0;
	VI xor (N + 1, 0), sum(N + 1, 0);
	REP(i, N) {
		sum[i + 1] = sum[i] + A[i];
		xor[i + 1] = xor[i] ^ A[i];
	}
	eFOR(i, 1, 20) {
		REP(L, N) {
			int R = L + i;
			if (R > N)break;
			if ((xor[R] ^ xor[L]) == sum[R] - sum[L])ans++;

		}
	}



	cout << ans << endl;

	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:46:12: error: expected unqualified-id before 'xor' token
   46 |         VI xor (N + 1, 0), sum(N + 1, 0);
      |            ^~~
a.cc:48:17: error: 'sum' was not declared in this scope
   48 |                 sum[i + 1] = sum[i] + A[i];
      |                 ^~~
a.cc:49:17: error: expected primary-expression before 'xor' token
   49 |                 xor[i + 1] = xor[i] ^ A[i];
      |                 ^~~
a.cc:49:22: error: expected ',' before '+' token
   49 |                 xor[i + 1] = xor[i] ^ A[i];
      |                      ^~
      |                      ,
a.cc:49:23: error: expected identifier before '+' token
   49 |                 xor[i + 1] = xor[i] ^ A[i];
      |                       ^
a.cc: In lambda function:
a.cc:49:28: error: expected '{' before '=' token
   49 |                 xor[i + 1] = xor[i] ^ A[i];
      |                            ^
a.cc: In function 'int main()':
a.cc:49:30: error: expected primary-expression before 'xor' token
   49 |                 xor[i + 1] = xor[i] ^ A[i];
      |                              ^~~
a.cc: In lambda function:
a.cc:49:37: error: expected '{' before '^' token
   49 |                 xor[i + 1] = xor[i] ^ A[i];
      |                                     ^
a.cc: In function 'int main()':
a.cc:55:30: error: expected primary-expression before 'xor' token
   55 |                         if ((xor[R] ^ xor[L]) == sum[R] - sum[L])ans++;
      |                              ^~~
a.cc: In lambda function:
a.cc:55:37: error: expected '{' before '^' token
   55 |                         if ((xor[R] ^ xor[L]) == sum[R] - sum[L])ans++;
      |                                     ^
a.cc: In function 'int main()':
a.cc:55:39: error: expected primary-expression before 'xor' token
   55 |                         if ((xor[R] ^ xor[L]) == sum[R] - sum[L])ans++;
      |                                       ^~~
a.cc: In lambda function:
a.cc:55:45: error: expected '{' before ')' token
   55 |                         if ((xor[R] ^ xor[L]) == sum[R] - sum[L])ans++;
      |                                             ^
a.cc: In function 'int main()':
a.cc:55:50: error: 'sum' was not declared in this scope
   55 |                         if ((xor[R] ^ xor[L]) == sum[R] - sum[L])ans++;
      |                                                  ^~~