Submission #1076809
Source Code Expand
#define DEB
#include<bits/stdc++.h>
#define REP(i,m) for(int i=0;i<(m);++i)
#define REPN(i,m,in) for(int i=(in);i<(m);++i)
#define ALL(t) (t).begin(),(t).end()
#define CLR(a) memset((a),0,sizeof(a))
#define pb push_back
#define mp make_pair
#define fr first
#define sc second
using namespace std;
#ifdef DEB
#define dump(x) cerr << #x << " = " << (x) << endl
#define prl cerr<<"called:"<< __LINE__<<endl
#define dumpR(x) cerr<<"\x1b[31m"<<#x<<" = " <<(x)<<"\x1b[39m"<<endl
#define dumpY(x) cerr<<"\x1b[33m"<<#x<<" = " <<(x)<<"\x1b[39m"<<endl
#define dumpG(x) cerr<<"\x1b[32m"<<#x<<" = " <<(x)<<"\x1b[39m"<<endl
template<class T> void debug(T a,T b){ for(;a!=b;++a) cerr<<*a<<' ';cerr<<endl;}
#else
#define dump(x) ;
#define dumpR(x) ;
#define dumpY(x) ;
#define dumpG(x) ;
#define prl ;
template<class T> void debug(T a,T b){ ;}
#endif
template<class T> void chmin(T& a,const T& b) { if(a>b) a=b; }
template<class T> void chmax(T& a,const T& b) { if(a<b) a=b; }
typedef long long int lint;
typedef pair<int,int> pi;
namespace std{
template<class S,class T>
ostream &operator <<(ostream& out,const pair<S,T>& a){
out<<'('<<a.fr<<','<<a.sc<<')';
return out;
}
}
//const int INF=5e8;
int dp[2005][2005];
int n,m,K;
const int mod=1000000007;
void chadd(int& a,int b){
a+=b;
if(a>=mod) a-=mod;
}
int rec(int zero,int one){
if(zero<0 || one<0) return 0;
if(zero+one==1) return 1;
if(zero==0 || one==0) return 0;
if(zero+one==K) return 1;
int& res=dp[zero][one];
if(~res) return res;
res=0;
REP(i,K){//n.o. zero
chadd(res,rec(zero-i,one-(K-1-i)));
}
return res;
}
int main(){
cin>>n>>m>>K;
memset(dp,-1,sizeof(dp));
int res=0;
for(int i=n;i>0;i-=K-1) for(int j=m;j>0;j-=K-1){
chadd(res,rec(i,j));
}
cout<<res<<endl;
return 0;
}
Submission Info
Submission Time |
|
Task |
E - Eternal Average |
User |
hogloid |
Language |
C++14 (GCC 5.4.1) |
Score |
1600 |
Code Size |
1872 Byte |
Status |
AC |
Exec Time |
143 ms |
Memory |
16128 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
1600 / 1600 |
Status |
|
|
Set Name |
Test Cases |
Sample |
s1.txt, s2.txt, s3.txt |
All |
01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, s1.txt, s2.txt, s3.txt |
Case Name |
Status |
Exec Time |
Memory |
01.txt |
AC |
22 ms |
16000 KB |
02.txt |
AC |
143 ms |
16128 KB |
03.txt |
AC |
22 ms |
16000 KB |
04.txt |
AC |
22 ms |
16000 KB |
05.txt |
AC |
108 ms |
16128 KB |
06.txt |
AC |
22 ms |
16000 KB |
07.txt |
AC |
22 ms |
16000 KB |
08.txt |
AC |
23 ms |
16000 KB |
09.txt |
AC |
85 ms |
16000 KB |
10.txt |
AC |
81 ms |
16000 KB |
11.txt |
AC |
29 ms |
16000 KB |
12.txt |
AC |
22 ms |
16000 KB |
13.txt |
AC |
67 ms |
16000 KB |
14.txt |
AC |
41 ms |
16000 KB |
15.txt |
AC |
63 ms |
16000 KB |
16.txt |
AC |
22 ms |
16000 KB |
17.txt |
AC |
39 ms |
16000 KB |
18.txt |
AC |
33 ms |
16000 KB |
19.txt |
AC |
28 ms |
16128 KB |
20.txt |
AC |
72 ms |
16000 KB |
21.txt |
AC |
22 ms |
16000 KB |
22.txt |
AC |
83 ms |
16000 KB |
23.txt |
AC |
67 ms |
16000 KB |
24.txt |
AC |
62 ms |
16000 KB |
s1.txt |
AC |
22 ms |
16000 KB |
s2.txt |
AC |
22 ms |
16000 KB |
s3.txt |
AC |
22 ms |
16000 KB |