#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
using namespace std;
//------------------------------DEFINE------------------------------
//******************************************************************
#define IOS ios_base::sync_with_stdio(false); cin.tie(0),cout.tie(0)
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define endl "\n"
//******************************************************************
//----------------------------FUNCTION------------------------------
//******************************************************************
ll gcd(ll a,ll b){
if(a>b) swap(a,b);
if(a==0) return a+b;
return gcd(b%a,a);
}
ll lcm(ll a,ll b){
return a/gcd(a,b)*b;
}
bool is_prime(ll n){
ll k=sqrt(n);
if(n==2) return true;
if(n<2||n%2==0||k*k==n) return false;
for(int i=3;i<=k;i+=2){
if(n%i==0){
return false;
}
}
return true;
}
//*****************************************************************
//--------------------------MAIN-CODE------------------------------
const int mxn=1e6+5,N=1e6+2;
int t=1,n,m,a[mxn],b[mxn],c[mxn],d[mxn],tree[mxn],MOD=1e9+7;
int add(int ind,int val){
while(ind<=N){
tree[ind]+=val;
ind+=(ind&(-ind));
}
}
int update(int l,int r,int val){
add(l,val);
add(r+1,-val);
}
int query(int ind){
int ans=0;
while(ind>0){
ans+=tree[ind];
ind-=(ind&(-ind));
}
return ans;
}
bool f(pair<int,pii>a,pair<int,pii>b){
if(a.F==b.F){
return a.S>b.S;
}
return a.F<b.F;
}
void solve(){
string s;
cin>>s;
if(s.size()-1<3){
cout<<setprecision(8)<<fixed<<0<<endl;
return;
}
long double k=s.size()-1;
long double ans=1.0*k*k/8;
if(s.size()==4){
cout<<setprecision(8)<<fixed<<1<<endl;
return;
}
else{
cout<<setprecision(8)<<fixed<<ans<<endl;
return;
}
}
int main(){
//IOS;
//cin>>t;
while(t--){
solve();
}
return 0;
}
Compilation message
passes.cpp: In function 'int add(int, int)':
passes.cpp:50:1: warning: no return statement in function returning non-void [-Wreturn-type]
50 | }
| ^
passes.cpp: In function 'int update(int, int, int)':
passes.cpp:54:1: warning: no return statement in function returning non-void [-Wreturn-type]
54 | }
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
found '100800.5000000000', expected '100800.5000000000', error '0.0000000000' |
2 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
3 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
4 |
Correct |
1 ms |
212 KB |
found '1.0000000000', expected '1.0000000000', error '0.0000000000' |
5 |
Correct |
1 ms |
212 KB |
found '124002.0000000000', expected '124002.0000000000', error '0.0000000000' |
6 |
Incorrect |
3 ms |
468 KB |
1st numbers differ - expected: '772893586.0000000000', found: '772893586.1250000000', error = '0.0000000002' |
7 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
1st numbers differ - expected: '1.0000000000', found: '3.1250000000', error = '2.1250000000' |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
212 KB |
1st numbers differ - expected: '1.0000000000', found: '3.1250000000', error = '2.1250000000' |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
found '100800.5000000000', expected '100800.5000000000', error '0.0000000000' |
2 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
3 |
Correct |
0 ms |
212 KB |
found '0.0000000000', expected '0.0000000000', error '-0.0000000000' |
4 |
Correct |
1 ms |
212 KB |
found '1.0000000000', expected '1.0000000000', error '0.0000000000' |
5 |
Correct |
1 ms |
212 KB |
found '124002.0000000000', expected '124002.0000000000', error '0.0000000000' |
6 |
Incorrect |
3 ms |
468 KB |
1st numbers differ - expected: '772893586.0000000000', found: '772893586.1250000000', error = '0.0000000002' |
7 |
Halted |
0 ms |
0 KB |
- |