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28 lines
544 B
C++
28 lines
544 B
C++
#include <iostream>
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using std::cin;
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using std::cout;
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using std::endl;
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int n, x, a[100005], b[100005], ans;
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int main() {
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std::ios::sync_with_stdio(false);
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cin >> n;
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for (int i = 1; i <= n; i++) {
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cin >> a[i];
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}
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for (int i = 1; i <= n; i++) {
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cin >> x;
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a[i] -= x;
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if (a[i] < 0) {
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b[i] = -a[i];
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a[i] = 0;
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}
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if (a[i] > a[i - 1]) ans += a[i] - a[i - 1];
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if (b[i] > b[i - 1]) ans += b[i] - b[i - 1];
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}
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cout << ans << endl;
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return 0;
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}
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