#include<bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;
template <typename T> bool chkmin(T &x,T y){return x>y?x=y,1:0;}
template <typename T> bool chkmax(T &x,T y){return x<y?x=y,1:0;}
ll readint(){
ll x=0,f=1; char ch=getchar();
while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
return x*f;
}
int n;
int a[100005],nxt[100005];
ll pref[100005];
ll get(int l,int r){
if(l<=r) return pref[r]-pref[l-1];
else return pref[n]-(pref[l-1]-pref[r]);
}
bool check(ll x){
if(pref[n]<x) return false;
int ptr=1;
for(int i=1;i<=n;i++){
while(get(i,ptr)<x) ptr=(ptr%n)+1;
nxt[i]=ptr;
if(ptr==i) ptr=(ptr%n)+1;
}
for(int i=1;i<=n;i++){
ll a=get(i,nxt[i]);
ll b=get((nxt[i]%n)+1,nxt[(nxt[i]%n)+1]);
ll c=get(nxt[(nxt[i]%n)+1]%n+1,nxt[nxt[(nxt[i]%n)+1]%n+1]);
if(a+b+c<=pref[n]) return true;
}
return false;
}
int main(){
n=readint();
for(int i=1;i<=n;i++) a[i]=readint();
for(int i=1;i<=n;i++) pref[i]=pref[i-1]+a[i];
ll l=0,r=1e17,ans=0;
while(l<=r){
ll mid=(l+r)/2;
if(check(mid)) ans=mid,l=mid+1;
else r=mid-1;
}
printf("%lld\n",ans);
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
500 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
344 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
500 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
344 KB |
Output is correct |
| 11 |
Correct |
1 ms |
344 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
344 KB |
Output is correct |
| 15 |
Correct |
1 ms |
600 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
344 KB |
Output is correct |
| 19 |
Correct |
1 ms |
344 KB |
Output is correct |
| 20 |
Correct |
1 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
500 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
344 KB |
Output is correct |
| 11 |
Correct |
1 ms |
344 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
344 KB |
Output is correct |
| 15 |
Correct |
1 ms |
600 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
344 KB |
Output is correct |
| 19 |
Correct |
1 ms |
344 KB |
Output is correct |
| 20 |
Correct |
1 ms |
348 KB |
Output is correct |
| 21 |
Correct |
4 ms |
604 KB |
Output is correct |
| 22 |
Correct |
4 ms |
604 KB |
Output is correct |
| 23 |
Correct |
4 ms |
604 KB |
Output is correct |
| 24 |
Correct |
4 ms |
604 KB |
Output is correct |
| 25 |
Correct |
4 ms |
612 KB |
Output is correct |
| 26 |
Correct |
6 ms |
604 KB |
Output is correct |
| 27 |
Correct |
7 ms |
604 KB |
Output is correct |
| 28 |
Correct |
7 ms |
604 KB |
Output is correct |
| 29 |
Correct |
6 ms |
528 KB |
Output is correct |
| 30 |
Correct |
7 ms |
604 KB |
Output is correct |
| 31 |
Correct |
4 ms |
348 KB |
Output is correct |
| 32 |
Correct |
4 ms |
348 KB |
Output is correct |
| 33 |
Correct |
4 ms |
348 KB |
Output is correct |
| 34 |
Correct |
4 ms |
588 KB |
Output is correct |
| 35 |
Correct |
4 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
344 KB |
Output is correct |
| 4 |
Correct |
0 ms |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
1 ms |
344 KB |
Output is correct |
| 7 |
Correct |
0 ms |
500 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
1 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
344 KB |
Output is correct |
| 11 |
Correct |
1 ms |
344 KB |
Output is correct |
| 12 |
Correct |
1 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
348 KB |
Output is correct |
| 14 |
Correct |
1 ms |
344 KB |
Output is correct |
| 15 |
Correct |
1 ms |
600 KB |
Output is correct |
| 16 |
Correct |
1 ms |
348 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
344 KB |
Output is correct |
| 19 |
Correct |
1 ms |
344 KB |
Output is correct |
| 20 |
Correct |
1 ms |
348 KB |
Output is correct |
| 21 |
Correct |
4 ms |
604 KB |
Output is correct |
| 22 |
Correct |
4 ms |
604 KB |
Output is correct |
| 23 |
Correct |
4 ms |
604 KB |
Output is correct |
| 24 |
Correct |
4 ms |
604 KB |
Output is correct |
| 25 |
Correct |
4 ms |
612 KB |
Output is correct |
| 26 |
Correct |
6 ms |
604 KB |
Output is correct |
| 27 |
Correct |
7 ms |
604 KB |
Output is correct |
| 28 |
Correct |
7 ms |
604 KB |
Output is correct |
| 29 |
Correct |
6 ms |
528 KB |
Output is correct |
| 30 |
Correct |
7 ms |
604 KB |
Output is correct |
| 31 |
Correct |
4 ms |
348 KB |
Output is correct |
| 32 |
Correct |
4 ms |
348 KB |
Output is correct |
| 33 |
Correct |
4 ms |
348 KB |
Output is correct |
| 34 |
Correct |
4 ms |
588 KB |
Output is correct |
| 35 |
Correct |
4 ms |
348 KB |
Output is correct |
| 36 |
Correct |
91 ms |
3156 KB |
Output is correct |
| 37 |
Correct |
85 ms |
2948 KB |
Output is correct |
| 38 |
Correct |
83 ms |
2944 KB |
Output is correct |
| 39 |
Correct |
86 ms |
2948 KB |
Output is correct |
| 40 |
Correct |
86 ms |
2904 KB |
Output is correct |
| 41 |
Correct |
88 ms |
2920 KB |
Output is correct |
| 42 |
Correct |
86 ms |
2908 KB |
Output is correct |
| 43 |
Correct |
89 ms |
2908 KB |
Output is correct |
| 44 |
Correct |
84 ms |
2940 KB |
Output is correct |
| 45 |
Correct |
93 ms |
2908 KB |
Output is correct |
| 46 |
Correct |
39 ms |
2140 KB |
Output is correct |
| 47 |
Correct |
39 ms |
2136 KB |
Output is correct |
| 48 |
Correct |
39 ms |
2136 KB |
Output is correct |
