//一時保存

#include "bits/stdc++.h"
using namespace std;
#define int long long
#define endl '\n'
int mod=1e9+7;
int mod2=998244353;
const int INF=1e9;

signed main(){
	vector<int> a(5);
	for(int i=0;i<5;i++)cin>>a[i];
	vector<int> A(5);
	for(int i=0;i<5;i++)A[i]=(a[i]+9)/10*10;
	int ans=1e9;
	for(int i=0;i<5;i++){
		int tmp=0;
		for(int j=0;j<5;j++){
			if(i==j)tmp+=a[i];
			else tmp+=A[j];
		}
		ans=min(ans,tmp);
	}
	cout<<ans<<endl;
}

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