Submission #1014495
Source Code Expand
#include <cstdio> #include <cstring> #include <vector> #include<queue> #include <algorithm> #define pb push_back using namespace std; const int P = 1000000007; const int N = 101010; int n,a,b,c,i; long long jc[N],ans; long long ksm(long long a,long long b){ if (b==0){ return 1; } long long ans=ksm(a,b/2); ans=ans*ans%P; if (b%2==1) ans=ans*a%P; return ans; } long long cc(int a,int b){ return jc[b]*ksm(jc[a]*jc[b-a]%P,P-2)%P; } int main(){ jc[0]=1; for (i=1;i<=20000;i++) jc[i]=(jc[i-1]*i)%P; scanf("%d%d%d%d",&n,&a,&b,&c); if (b%2==1){ printf("0\n"); return 0; } //printf("%lld\n",cc(2,5)); int ds=a+b/2; for (i=0;i<=a;i++){ int t=a-i; if (t>c) continue; int tt=c-t; for (int j=0;j*3<=tt;j++){ long long tmp=cc(j,ds+j)*cc(i,ds)%P*cc(a-i,ds-i)%P; int ttt=tt-3*j; if ((b==0)&&(ttt)) continue; tmp=tmp*cc(b/2-1,b/2+ttt-1)%P; ans=(ans+tmp)%P; } } printf("%lld\n",ans); }
Submission Info
Submission Time | |
---|---|
Task | J - 123 Pairs |
User | gxgod |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 969 Byte |
Status | WA |
Exec Time | 970 ms |
Memory | 384 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:28:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&a,&b,&c); ^
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 1500 | ||||||
Status |
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|
Set Name | Test Cases |
---|---|
Sample | example0.txt, example1.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, 032.txt, 033.txt, 034.txt, 035.txt, 036.txt, 037.txt, 038.txt, 039.txt, 040.txt, 041.txt, 042.txt, 043.txt, 044.txt, 045.txt, 046.txt, 047.txt, 048.txt, 049.txt, example0.txt, example1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | AC | 463 ms | 256 KB |
001.txt | AC | 5 ms | 384 KB |
002.txt | AC | 2 ms | 256 KB |
003.txt | AC | 2 ms | 256 KB |
004.txt | AC | 7 ms | 384 KB |
005.txt | AC | 2 ms | 256 KB |
006.txt | AC | 2 ms | 384 KB |
007.txt | WA | 7 ms | 256 KB |
008.txt | AC | 2 ms | 256 KB |
009.txt | AC | 2 ms | 384 KB |
010.txt | WA | 2 ms | 256 KB |
011.txt | AC | 2 ms | 256 KB |
012.txt | WA | 3 ms | 256 KB |
013.txt | AC | 2 ms | 384 KB |
014.txt | AC | 6 ms | 384 KB |
015.txt | AC | 758 ms | 256 KB |
016.txt | AC | 51 ms | 256 KB |
017.txt | AC | 209 ms | 384 KB |
018.txt | AC | 47 ms | 256 KB |
019.txt | AC | 247 ms | 256 KB |
020.txt | AC | 78 ms | 256 KB |
021.txt | AC | 653 ms | 256 KB |
022.txt | AC | 65 ms | 384 KB |
023.txt | AC | 138 ms | 256 KB |
024.txt | AC | 669 ms | 256 KB |
025.txt | AC | 106 ms | 256 KB |
026.txt | AC | 390 ms | 384 KB |
027.txt | AC | 620 ms | 256 KB |
028.txt | AC | 226 ms | 384 KB |
029.txt | AC | 297 ms | 384 KB |
030.txt | AC | 616 ms | 256 KB |
031.txt | AC | 674 ms | 384 KB |
032.txt | AC | 54 ms | 256 KB |
033.txt | AC | 2 ms | 256 KB |
034.txt | AC | 251 ms | 384 KB |
035.txt | AC | 332 ms | 384 KB |
036.txt | AC | 61 ms | 256 KB |
037.txt | AC | 2 ms | 256 KB |
038.txt | AC | 970 ms | 384 KB |
039.txt | AC | 2 ms | 256 KB |
040.txt | AC | 2 ms | 256 KB |
041.txt | AC | 163 ms | 256 KB |
042.txt | AC | 7 ms | 384 KB |
043.txt | AC | 2 ms | 384 KB |
044.txt | AC | 2 ms | 256 KB |
045.txt | AC | 2 ms | 384 KB |
046.txt | WA | 2 ms | 256 KB |
047.txt | WA | 2 ms | 256 KB |
048.txt | AC | 2 ms | 256 KB |
049.txt | AC | 2 ms | 256 KB |
example0.txt | AC | 2 ms | 384 KB |
example1.txt | AC | 10 ms | 256 KB |