Untitled

#include <iostream>
#include <vector>

using namespace std;

int countAnalogousArrays(vector<int> consecutiveDifference, int lowerBound, int upperBound) {
    int n = consecutiveDifference.size();
    int count = 0;

    for (int startValue = lowerBound; startValue < upperBound; ++startValue) {
        bool isValid = true;
        int currentValue = startValue;

        for (int i = 0; i < n; ++i) {
            currentValue -= consecutiveDifference[i];
            if (currentValue >= upperBound || currentValue < lowerBound) {
                isValid = false;
                break;
            }
        }

        if (isValid) {
            count++;
        }
    }

    return count;
}

int main() {
    int n;
    cin >> n;
    vector<int> consecutiveDifference(n);
    for (int i = 0; i < n; ++i) {
        cin >> consecutiveDifference[i];
    }
    int lowerBound, upperBound;
    cin >> lowerBound >> upperBound;

    int result = countAnalogousArrays(consecutiveDifference, lowerBound, upperBound);
    cout << result << endl;

    return 0;
}