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Submission #683385

# Submission time Handle Problem Language Result Execution time Memory
683385 2023-01-18T10:03:08 Z MtSaka Toll (BOI17_toll) C++17
100 / 100
 251 ms 14184 KB 
#include<bits/stdc++.h>
using namespace std;
int k,n,m,o;
constexpr int inf=1000000000;
struct Mat{
  vector<vector<int>>a;
  Mat(){
    a.assign(k,vector<int>(k,inf));
  }
  Mat(const vector<vector<int>>&b):a(b){}
  friend Mat operator*(const Mat&a,const Mat&b){
    Mat c=Mat();
    for(int i=0;i<k;i++)for(int j=0;j<k;j++)for(int l=0;l<k;l++)c.a[i][j]=min(c.a[i][j],a.a[i][l]+b.a[l][j]);
    return c;
  }
  static const Mat e(){
    Mat c=Mat();
    for(int i=0;i<k;i++)c.a[i][i]=0;
    return c;
  }
};
struct segtree{
  private:
  int n;
  vector<Mat>seg;
  public:
  segtree(int n):n(n){seg.assign(2*n,Mat::e());}
  segtree(const vector<Mat>&v){
    n=v.size();
    seg.assign(2*n,Mat::e());
    for(int i=0;i<n;i++)seg[i+n]=v[i];
    for(int i=n-1;i>0;i--)seg[i]=seg[i<<1]*seg[i<<1|1];
  }
  Mat prod(int l,int r)const{
    Mat sml=Mat::e(),smr=Mat::e();
    for(l+=n,r+=n;l<r;l>>=1,r>>=1){
      if(l&1)sml=sml*seg[l++];
      if(r&1)smr=seg[--r]*smr;
    }
    return sml*smr;
  }
};
int main(){
  cin>>k>>n>>m>>o;
  vector<Mat>mat(n/k);
  for(int i=0;i<m;i++){
    int a,b,c;cin>>a>>b>>c;
    mat[a/k].a[a%k][b%k]=min(mat[a/k].a[a%k][b%k],c);
  }
  segtree seg(mat);
  while(o--){
    int a,b;cin>>a>>b;
    auto res=seg.prod(a/k,b/k);
    //for(int i=0;i<k;i++)for(int j=0;j<k;j++)cout<<res.a[i][j]<<" \n"[j==k-1];
    int ans=res.a[a%k][b%k];
    if(ans==inf)ans=-1;
    cout<<ans<<endl;
  }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 106 ms 14184 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 4 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 7 ms 468 KB Output is correct
8 Correct 96 ms 14164 KB Output is correct
9 Correct 98 ms 14108 KB Output is correct
10 Correct 71 ms 13360 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 132 ms 13076 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 27 ms 724 KB Output is correct
8 Correct 30 ms 596 KB Output is correct
9 Correct 115 ms 14108 KB Output is correct
10 Correct 162 ms 12336 KB Output is correct
11 Correct 138 ms 13220 KB Output is correct
12 Correct 152 ms 11388 KB Output is correct
13 Correct 173 ms 8208 KB Output is correct
14 Correct 87 ms 7524 KB Output is correct
15 Correct 91 ms 6988 KB Output is correct
16 Correct 100 ms 7016 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 66 ms 13936 KB Output is correct
11 Correct 106 ms 12948 KB Output is correct
12 Correct 132 ms 12236 KB Output is correct
13 Correct 138 ms 12488 KB Output is correct
14 Correct 112 ms 11788 KB Output is correct
15 Correct 86 ms 6860 KB Output is correct
16 Correct 76 ms 6972 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 2 ms 468 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 66 ms 13936 KB Output is correct
11 Correct 106 ms 12948 KB Output is correct
12 Correct 132 ms 12236 KB Output is correct
13 Correct 138 ms 12488 KB Output is correct
14 Correct 112 ms 11788 KB Output is correct
15 Correct 86 ms 6860 KB Output is correct
16 Correct 76 ms 6972 KB Output is correct
17 Correct 103 ms 12948 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 296 KB Output is correct
23 Correct 10 ms 612 KB Output is correct
24 Correct 10 ms 564 KB Output is correct
25 Correct 17 ms 568 KB Output is correct
26 Correct 15 ms 572 KB Output is correct
27 Correct 71 ms 14056 KB Output is correct
28 Correct 148 ms 12244 KB Output is correct
29 Correct 154 ms 12500 KB Output is correct
30 Correct 138 ms 11932 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 106 ms 14184 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 4 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 7 ms 468 KB Output is correct
8 Correct 96 ms 14164 KB Output is correct
9 Correct 98 ms 14108 KB Output is correct
10 Correct 71 ms 13360 KB Output is correct
11 Correct 132 ms 13076 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 27 ms 724 KB Output is correct
18 Correct 30 ms 596 KB Output is correct
19 Correct 115 ms 14108 KB Output is correct
20 Correct 162 ms 12336 KB Output is correct
21 Correct 138 ms 13220 KB Output is correct
22 Correct 152 ms 11388 KB Output is correct
23 Correct 173 ms 8208 KB Output is correct
24 Correct 87 ms 7524 KB Output is correct
25 Correct 91 ms 6988 KB Output is correct
26 Correct 100 ms 7016 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 300 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 2 ms 468 KB Output is correct
33 Correct 2 ms 468 KB Output is correct
34 Correct 4 ms 468 KB Output is correct
35 Correct 3 ms 468 KB Output is correct
36 Correct 66 ms 13936 KB Output is correct
37 Correct 106 ms 12948 KB Output is correct
38 Correct 132 ms 12236 KB Output is correct
39 Correct 138 ms 12488 KB Output is correct
40 Correct 112 ms 11788 KB Output is correct
41 Correct 86 ms 6860 KB Output is correct
42 Correct 76 ms 6972 KB Output is correct
43 Correct 103 ms 12948 KB Output is correct
44 Correct 1 ms 304 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 296 KB Output is correct
49 Correct 10 ms 612 KB Output is correct
50 Correct 10 ms 564 KB Output is correct
51 Correct 17 ms 568 KB Output is correct
52 Correct 15 ms 572 KB Output is correct
53 Correct 71 ms 14056 KB Output is correct
54 Correct 148 ms 12244 KB Output is correct
55 Correct 154 ms 12500 KB Output is correct
56 Correct 138 ms 11932 KB Output is correct
57 Correct 251 ms 13240 KB Output is correct
58 Correct 98 ms 14140 KB Output is correct
59 Correct 138 ms 13132 KB Output is correct