Submission #1216547

#	Time	Username	Problem	Language	Result	Execution time	Memory
1216547		kokoxuya	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	53 ms	1980 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define ss second
#define ff first
#define piii pair<int,pii>
#define debu(x) (cerr << #x  << " = "<< x << "\n")
#define debu2(x,y) (cerr << #x  << " = "<< x << " " << #y << " = " << y << "\n")
#define debu3(x,y,z) (cerr << #x  << " = "<< x << " " << #y << " = " << y << " " << #z << " = " << z<< "\n")
#define bitout(x,y) {\
	cerr << #x << " : ";\
	for (int justforbits = y; justforbits >=0; justforbits--)cout << (((1 << justforbits) & x)>=1);\
	cout << "\n";\
}
#define rangeout(j,rangestart,rangeend) {\
	cerr << "outputting" << #j<< ":\n";\
	for (int forrang = rangestart; forrang <= rangeend; forrang++)cerr << j[forrang] << " ";\
	cerr<<"\n";\
}
#define c1 {cerr << "Checkpoint 1! \n\n";cerr.flush();}
#define c2 {cerr << "Checkpoint 2! \n\n";cerr.flush();}
#define c3 {cerr << "Checkpoint 3! \n\n";cerr.flush();}
#define c4 {cerr << "Checkpoint 4! \n\n";cerr.flush();}


signed main()
{
    int t1,t2,t3,t4;
    mt19937_64 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
    //ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	
	int n;cin>>n;
	vector<int>nummys(n+1);
	
	for(int a=1;a<=n;a++)
	{
		cin>>nummys[a];
	}
	
	int ans=LLONG_MAX;
	int currbef=0,curraft=0;
	for(int a=1;a<n;a++)
	{
		curraft+=max(0ll,(nummys[a+1]+1)-nummys[a]);
	}
	
	ans=min(ans,curraft);
	for(int a=2;a<=n;a++)
	{
		curraft-=max(0ll,(nummys[a]+1)-nummys[a-1]);
		currbef+=max(0ll,(nummys[a-1]+1)-nummys[a]);
		ans=min(ans,max(curraft,currbef));
	}
	cout<<ans;
}

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