oj.uz

Submission #92882

# Submission time Handle Problem Language Result Execution time Memory
92882 2019-01-05T12:13:18 Z LittleFlowers__ Skyscraper (JOI16_skyscraper) C++14
15 / 100
 352 ms 187256 KB 
#include <bits/stdc++.h>
#define bit(x,i) (1&(x>>(i-1)))
#define on(x,i)  (x|(1<<(i-1)))
using namespace std;
const int M=1e9+7;
int n,l,kq;
int a[15];
int f[1<<15][15][200];
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cin>>n>>l;
  for(int i=1;i<=n;++i) cin>>a[i];
  f[0][0][0]=1;
  for(int tt=0;tt<(1<<n)-1;++tt) for(int i=0;i<=n;++i) for(int t=0;t<=l;++t) if(f[tt][i][t])
    for(int j=1;j<=n;++j) if(!bit(tt,j))
    {
      int tt2=on(tt,j);
      int c=(tt==0 ? 0 : t + abs(a[i]-a[j]));
      f[tt2][j][c]=(f[tt2][j][c] + f[tt][i][t])%M;
    }
  for(int i=1;i<=n;++i) for(int t=0;t<=l;++t) kq=(kq+f[(1<<n)-1][i][t])%M;
  cout<<kq;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 508 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 760 KB Output is correct
5 Incorrect 27 ms 3320 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 44540 KB Output is correct
2 Correct 244 ms 187152 KB Output is correct
3 Correct 318 ms 185912 KB Output is correct
4 Correct 225 ms 187256 KB Output is correct
5 Correct 209 ms 187144 KB Output is correct
6 Correct 324 ms 187256 KB Output is correct
7 Correct 200 ms 185848 KB Output is correct
8 Correct 284 ms 185768 KB Output is correct
9 Correct 352 ms 185976 KB Output is correct
10 Correct 222 ms 186700 KB Output is correct

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 508 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 760 KB Output is correct
5 Incorrect 27 ms 3320 KB Output isn't correct
6 Halted 0 ms 0 KB -