Submission #1386366
Source Code Expand
#include<cmath> #include<cstdio> #define ld long double using namespace std; ld getans(int n,ld a1,ld x,ld a2n){ ld b1,b2n,y; if (n==0)return 0; if (n==1)return (a1+x/2); b1=a1/n*(n-1)+(a1+2*x)/(2*n)+(a1+x)*3/(2*n); b2n=a2n/n*(n-1)+(a2n-2*x)/(2*n)+(a2n-x)*3/(2*n); y=(b2n-b1)/(2*n-3); return (a1+n*x-x/2)+getans(n-1,b1,y,b2n); } int main(){ int n; ld a1,x,a2n; scanf("%d%LF%LF",&n,&a1,&x); a2n=a1+x*(2*n-1); printf("%.10LF",getans(n,a1,x,a2n)); }
Submission Info
Submission Time | |
---|---|
Task | C - Pushing Balls |
User | vjudge1 |
Language | C++14 (GCC 5.4.1) |
Score | 1000 |
Code Size | 463 Byte |
Status | AC |
Exec Time | 19 ms |
Memory | 18944 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:20:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%LF%LF",&n,&a1,&x); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1000 / 1000 | ||||
Status |
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|
Set Name | Test Cases |
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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 | 128 KB |
001.txt | AC | 1 ms | 128 KB |
002.txt | AC | 1 ms | 128 KB |
003.txt | AC | 1 ms | 128 KB |
004.txt | AC | 1 ms | 128 KB |
005.txt | AC | 1 ms | 128 KB |
006.txt | AC | 1 ms | 128 KB |
007.txt | AC | 1 ms | 128 KB |
008.txt | AC | 1 ms | 128 KB |
009.txt | AC | 1 ms | 128 KB |
010.txt | AC | 3 ms | 2560 KB |
011.txt | AC | 16 ms | 15616 KB |
012.txt | AC | 9 ms | 8704 KB |
013.txt | AC | 11 ms | 10496 KB |
014.txt | AC | 8 ms | 7296 KB |
015.txt | AC | 17 ms | 17152 KB |
016.txt | AC | 17 ms | 16000 KB |
017.txt | AC | 7 ms | 6912 KB |
018.txt | AC | 17 ms | 16640 KB |
019.txt | AC | 4 ms | 3456 KB |
020.txt | AC | 19 ms | 18944 KB |
021.txt | AC | 19 ms | 18944 KB |
022.txt | AC | 19 ms | 18944 KB |
023.txt | AC | 19 ms | 18944 KB |
024.txt | AC | 19 ms | 18944 KB |
025.txt | AC | 19 ms | 18944 KB |
026.txt | AC | 19 ms | 18944 KB |
027.txt | AC | 19 ms | 18944 KB |
028.txt | AC | 19 ms | 18944 KB |
029.txt | AC | 19 ms | 18944 KB |
030.txt | AC | 18 ms | 18944 KB |
031.txt | AC | 19 ms | 18944 KB |
example0.txt | AC | 1 ms | 128 KB |
example1.txt | AC | 1 ms | 128 KB |
example2.txt | AC | 1 ms | 256 KB |