Submission #585891

#	Time	Username	Problem	Language	Result	Execution time	Memory
585891		krit3379	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	0 / 100	1 ms	340 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define N 200005

int a[N],dp1[N],dp2[N],ans=2e9;

int main(){
    int n,i,ma;
    scanf("%d",&n);
    for(i=1;i<=n;i++)scanf("%d",&a[i]);
    ma=0;
    for(i=1;i<=n;i++){
        ma=max(ma,a[i]-i);
        dp1[i]=ma-a[i]+i;
        dp1[i]=max(dp1[i],dp1[i-1]);
    }
    ma=0;
    for(i=n;i;i--){
        ma=max(ma,a[i]+i);
        dp2[i]=ma-a[i]-i;
        dp2[i]=max(dp2[i],dp2[i+1]);
    }
    for(i=1;i<=n;i++)ans=min(ans,max(dp1[i],dp2[i]));
    printf("%d",ans);
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
Main.cpp:10:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     for(i=1;i<=n;i++)scanf("%d",&a[i]);
      |                      ~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 40
• Subtask 2: 0 / 60