제출 #623900

#제출 시각아이디문제언어결과실행 시간메모리
623900Abrar_Al_SamitGrowing Vegetables is Fun 4 (JOI21_ho_t1)C++17
100 / 100
27 ms5752 KiB
#include<bits/stdc++.h> using namespace std; void PlayGround() { int n; cin>>n; int a[n]; for(int i=0; i<n; ++i) { cin>>a[i]; } long long b[n]; b[0] = a[0]; for(int i=1; i<n; ++i) { b[i] = a[i]-a[i-1]; } long long ans = LLONG_MAX; long long candidate = 0; for(int i=1; i<n; ++i) { if(b[i]<=0) candidate += abs(b[i])+1; } ans = min(ans, candidate); vector<long long>A(n), B(n); for(int i=0; i<n; ++i) { A[i] = max(0LL, 1-b[i]); B[i] = max(0LL, b[i]+1); if(i) A[i] += A[i-1]; } for(int i=n-2; i>=0; --i) { B[i] += B[i+1]; } for(int i=0; i<n-1; ++i) { ans = min(ans, max(A[i],B[i+1])); } cout<<ans<<'\n'; } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); PlayGround(); return 0; }
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