Submission #568681

#	Time	Username	Problem	Language	Result	Execution time	Memory
568681		dantoh000	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	41 ms	11656 KiB

Main

#include <bits/stdc++.h>
#define int long long
using namespace std;
int n;
int a[200005];
int diff[200005];
int c[200005];
int d[200005];
int pc[200005];
int pd[200005];
main(){
    scanf("%lld",&n);
    for (int i = 0; i < n; i++){
        scanf("%lld",&a[i]);
        if (i) diff[i] = a[i]-a[i-1];
    }
    for (int i = 1; i < n; i++){
        c[i] = max(0ll,1-diff[i]);
        d[i] = max(0ll,diff[i]+1);
        ///printf("%d: to 1 = %d, to -1 = %d\n",diff[i],c[i],d[i]);
        pc[i] = pc[i-1] + c[i];
    }
    for (int i = n-1; i >= 1; i--){
        pd[i] = pd[i+1] + d[i];
    }
    int ans = -1;
    for (int i = 1; i <= n; i++){
        int NC = max(pc[i-1],pd[i]);
        if (ans == -1 || ans > NC) ans = NC;
    }
    printf("%lld\n",ans);

}

Compilation message (stderr)

Main.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%lld",&n);
      |     ~~~~~^~~~~~~~~~~
Main.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         scanf("%lld",&a[i]);
      |         ~~~~~^~~~~~~~~~~~~~

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