process.stdin.resume();
process.stdin.setEncoding('ascii');
var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;
process.stdin.on('data', function (data) {
input_stdin += data;
});
process.stdin.on('end', function () {
input_stdin_array = input_stdin.split("\n");
main();
});
function readLine() {
return input_stdin_array[input_currentline++];
}
/////////////// ignore above this line ////////////////////
function main() {
var n = parseInt(readLine());
squares = readLine().split(' ');
squares = squares.map(Number);
var d_temp = readLine().split(' ');
var d = parseInt(d_temp[0]);
var m = parseInt(d_temp[1]);
// your code goes here
var count = 0;
for(var i = 0; i < n; i++){
var sum = 0;
for(var j = i; j < i + m; j++){
sum += squares[j];
}
if(sum == d){
count++;
}
}
console.log(count);
}
