제출 #717996

#제출 시각아이디문제언어결과실행 시간메모리
717996KalashnikovGrowing Vegetables is Fun 4 (JOI21_ho_t1)C++17
100 / 100
25 ms4356 KiB
#include <bits/stdc++.h> #define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0) #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout) #define all(a) a.begin() , a.end() #define F first #define S second using namespace std; using ll = long long; const int N = 2e5+5 , inf = 2e9 + 7; const ll INF = 1e18 , mod = 1e9+7 , P = 6547; int a[N]; ll suf[N], pref[N]; void solve(int tc) { int n; cin >> n; for(int i = 1; i <= n; i ++) { cin >> a[i]; } for(int i = n-1; i >= 1; i --) { suf[i] = suf[i+1]; if(a[i] <= a[i+1]) { suf[i] += a[i+1]-a[i]+1; } } for(int i = 2; i <= n; i ++) { pref[i] = pref[i-1]; if(a[i] <= a[i-1]) { pref[i] += a[i-1]-a[i]+1; } } ll res = INF; for(int i = 1; i <= n; i ++) { res = min(res , max(pref[i], suf[i])); } cout << res; } /* */ main() { ios; int tt = 1 , tc = 0; // cin >> tt; while(tt --) { solve(++tc); } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp:44:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   44 | main() {
      | ^~~~
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