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18 lines
260 B
C++
18 lines
260 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int main() {
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int n, t, l = 0, ans = 0;
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cin >> n;
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while (n--) {
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cin >> t;
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if (t > l) {
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ans += t - l;
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}
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l = t;
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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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