Submission #1444555
Source Code Expand
// This amazing code is by Eric Sunli Chen. #include <algorithm> #include <bitset> #include <cmath> #include <cstring> #include <cstdio> #include <cstdlib> #include <ctime> #include <iomanip> #include <iostream> #include <map> #include <queue> #include <set> #include <string> #include <utility> #include <vector> using namespace std; template<typename T> void get_int(T &x) { char t=getchar(); bool neg=false; x=0; for(; (t>'9'||t<'0')&&t!='-'; t=getchar()); if(t=='-')neg=true,t=getchar(); for(; t<='9'&&t>='0'; t=getchar())x=x*10+t-'0'; if(neg)x=-x; } template<typename T> void print_int(T x) { if(x<0)putchar('-'),x=-x; short a[20]= {},sz=0; while(x>0)a[sz++]=x%10,x/=10; if(sz==0)putchar('0'); for(int i=sz-1; i>=0; i--)putchar('0'+a[i]); } #define ff first #define ss second #define pb push_back #define mp make_pair #define get1(a) get_int(a) #define get2(a,b) get1(a),get1(b) #define get3(a,b,c) get1(a),get2(b,c) #define printendl(a) print_int(a),puts("") typedef long long LL; typedef unsigned long long uLL; typedef pair<int,int> pii; const int inf=0x3f3f3f3f; const LL Linf=1ll<<61; const double pi=acos(-1.0); int n,d,x; long double st,ed,ans; int main() { cin>>n>>d>>x; st=d;ed=d+(n+n-1)*x; for(int i=n;i>=1;i--) { ans+=(st+ed)/2; long double t=(ed-st)/(i+i-1); st+=(2*st+5*t)/2/i; ed+=(2*ed-5*t)/2/i; } cout<<fixed<<setprecision(10)<<ans<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Pushing Balls |
User | OhWeOnFire |
Language | C++14 (GCC 5.4.1) |
Score | 1000 |
Code Size | 1462 Byte |
Status | AC |
Exec Time | 7 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1000 / 1000 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | example0.txt, example1.txt, example2.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, 024.txt, 025.txt, 026.txt, 027.txt, 028.txt, 029.txt, 030.txt, 031.txt, example0.txt, example1.txt, example2.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 1 ms | 256 KB |
001.txt | AC | 1 ms | 256 KB |
002.txt | AC | 1 ms | 256 KB |
003.txt | AC | 1 ms | 256 KB |
004.txt | AC | 1 ms | 256 KB |
005.txt | AC | 1 ms | 256 KB |
006.txt | AC | 1 ms | 256 KB |
007.txt | AC | 1 ms | 256 KB |
008.txt | AC | 1 ms | 256 KB |
009.txt | AC | 1 ms | 256 KB |
010.txt | AC | 2 ms | 256 KB |
011.txt | AC | 6 ms | 256 KB |
012.txt | AC | 4 ms | 256 KB |
013.txt | AC | 4 ms | 256 KB |
014.txt | AC | 3 ms | 256 KB |
015.txt | AC | 6 ms | 256 KB |
016.txt | AC | 6 ms | 256 KB |
017.txt | AC | 3 ms | 256 KB |
018.txt | AC | 6 ms | 256 KB |
019.txt | AC | 2 ms | 256 KB |
020.txt | AC | 7 ms | 256 KB |
021.txt | AC | 7 ms | 256 KB |
022.txt | AC | 7 ms | 256 KB |
023.txt | AC | 7 ms | 256 KB |
024.txt | AC | 7 ms | 256 KB |
025.txt | AC | 7 ms | 256 KB |
026.txt | AC | 7 ms | 256 KB |
027.txt | AC | 7 ms | 256 KB |
028.txt | AC | 7 ms | 256 KB |
029.txt | AC | 7 ms | 256 KB |
030.txt | AC | 6 ms | 256 KB |
031.txt | AC | 7 ms | 256 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |
example2.txt | AC | 1 ms | 256 KB |