제출 #1279490

#제출 시각아이디문제언어결과실행 시간메모리
1279490muhammad-ahmadAirplane (NOI23_airplane)C++20
0 / 100
28 ms572 KiB
#include <bits/stdc++.h> using namespace std; #define int long long #define endl '\n' signed main(){ int n, m; cin >> n >> m; int alt = 0, ans = n - 1; int lst; cin >> lst; for (int i = 2; i <= n; i++){ int x; cin >> x; if (x > alt){ alt++; ans += x - alt; alt = x; } else if (x < alt){ alt--; ans += alt - x; alt = x; } } cout << ans << endl; }
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