# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
44194 |
2018-03-30T13:05:57 Z |
igzi |
Kangaroo (CEOI16_kangaroo) |
C++17 |
|
371 ms |
259104 KB |
#include <bits/stdc++.h>
#define mod 1000000007
#define maxN 202
using namespace std;
long long dp[2][maxN][maxN][maxN],a[2][maxN][maxN],n,i,j,k,s,e,x;
int main()
{
cin>>n>>s>>e;
dp[0][1][1][1]=dp[1][1][1][1]=1;
a[0][1][1]=a[1][1][1]=1;
for(i=2;i<=n;i++){
for(j=1;j<=i;j++){
for(k=1;k<=i;k++){
if(j==k) {dp[0][j][k][i]=dp[1][j][k][i]=0; continue;}
if(j<k) x=k-1;
else x=k;
dp[0][j][k][i]=a[1][j][x];
dp[0][j][k][i]%=mod;
dp[1][j][k][i]=a[0][j-1][x];
dp[1][j][k][i]%=mod;
//if(i==2 && j==2 && k==1) cout<<dp[1][j][k][i]<<endl;
//if(i==3) cout<<a[1][1][1]<<" "<<dp[1][1][2][2]<<" "<<dp[1][2][1][2]<<endl;
}
}
for(j=1;j<=i;j++){
a[0][0][j]=a[1][i+1][j]=0;
for(k=1;k<=i;k++){
a[0][k][j]=a[0][k-1][j]+dp[0][k][j][i];
a[0][k][j]%=mod;
}
for(k=i;k>0;k--){
a[1][k][j]=a[1][k+1][j]+dp[1][k][j][i];
a[1][k][j]%=mod;
}
}
}
cout<<(dp[0][s][e][n]+dp[1][s][e][n])%mod<<endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
616 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
616 KB |
Output is correct |
3 |
Correct |
3 ms |
2904 KB |
Output is correct |
4 |
Correct |
5 ms |
6092 KB |
Output is correct |
5 |
Correct |
6 ms |
6092 KB |
Output is correct |
6 |
Correct |
6 ms |
6092 KB |
Output is correct |
7 |
Correct |
5 ms |
6092 KB |
Output is correct |
8 |
Correct |
5 ms |
6092 KB |
Output is correct |
9 |
Correct |
6 ms |
6092 KB |
Output is correct |
10 |
Correct |
6 ms |
6092 KB |
Output is correct |
11 |
Correct |
6 ms |
6092 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
616 KB |
Output is correct |
3 |
Correct |
3 ms |
2904 KB |
Output is correct |
4 |
Correct |
5 ms |
6092 KB |
Output is correct |
5 |
Correct |
6 ms |
6092 KB |
Output is correct |
6 |
Correct |
6 ms |
6092 KB |
Output is correct |
7 |
Correct |
5 ms |
6092 KB |
Output is correct |
8 |
Correct |
5 ms |
6092 KB |
Output is correct |
9 |
Correct |
6 ms |
6092 KB |
Output is correct |
10 |
Correct |
6 ms |
6092 KB |
Output is correct |
11 |
Correct |
6 ms |
6092 KB |
Output is correct |
12 |
Correct |
205 ms |
127848 KB |
Output is correct |
13 |
Correct |
180 ms |
127848 KB |
Output is correct |
14 |
Correct |
202 ms |
127888 KB |
Output is correct |
15 |
Correct |
226 ms |
129124 KB |
Output is correct |
16 |
Correct |
250 ms |
129124 KB |
Output is correct |
17 |
Correct |
309 ms |
129124 KB |
Output is correct |
18 |
Correct |
187 ms |
129124 KB |
Output is correct |
19 |
Correct |
244 ms |
129124 KB |
Output is correct |
20 |
Correct |
245 ms |
129124 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
616 KB |
Output is correct |
3 |
Correct |
3 ms |
2904 KB |
Output is correct |
4 |
Correct |
5 ms |
6092 KB |
Output is correct |
5 |
Correct |
6 ms |
6092 KB |
Output is correct |
6 |
Correct |
6 ms |
6092 KB |
Output is correct |
7 |
Correct |
5 ms |
6092 KB |
Output is correct |
8 |
Correct |
5 ms |
6092 KB |
Output is correct |
9 |
Correct |
6 ms |
6092 KB |
Output is correct |
10 |
Correct |
6 ms |
6092 KB |
Output is correct |
11 |
Correct |
6 ms |
6092 KB |
Output is correct |
12 |
Correct |
205 ms |
127848 KB |
Output is correct |
13 |
Correct |
180 ms |
127848 KB |
Output is correct |
14 |
Correct |
202 ms |
127888 KB |
Output is correct |
15 |
Correct |
226 ms |
129124 KB |
Output is correct |
16 |
Correct |
250 ms |
129124 KB |
Output is correct |
17 |
Correct |
309 ms |
129124 KB |
Output is correct |
18 |
Correct |
187 ms |
129124 KB |
Output is correct |
19 |
Correct |
244 ms |
129124 KB |
Output is correct |
20 |
Correct |
245 ms |
129124 KB |
Output is correct |
21 |
Runtime error |
371 ms |
259104 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
22 |
Halted |
0 ms |
0 KB |
- |