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답안 #631024

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
631024 2022-08-17T14:44:20 Z Iwanttobreakfree Toll (BOI17_toll) C++17
100 / 100
 225 ms 36300 KB 
#include <iostream>
#include <vector>
using namespace std;
#define int long long
const int max_n=5e4+3,max_k=5,logn=17,INF=1e18;
int up[max_n][logn][max_k];
int num(int n,int j,int mod,int k){
    int ans=0;
    n-=(n%k);
    n-=k*(1<<j);
    n+=mod;
    return max(ans,n);
}
int kth(int x,int y,int k){
    int ans=INF,dif=x/k-y/k;
    vector<int> sol(k,INF);
    sol[x%k]=0;
    x=x/k*k;
    //cout<<x<<' ';
    if(dif<1)return INF;
    for(int j=logn-1;j>=0;j--){
        if(dif&(1<<j)){
            vector<int> sol2(k,INF);
            for(int to=0;to<k;to++){
                for(int cur=0;cur<k;cur++){
                    sol2[to]=min(sol2[to],sol[cur]+up[x+cur][j][to]);
                }
            }
            x-=k*(1<<j);
            sol=sol2;
        }
    }
    return sol[y%k];
}
signed main(){
    int k,n,m,o,x,y,w;
    cin>>k>>n>>m>>o;
    for(int i=0;i<n;i++)for(int j=0;j<logn;j++)for(int q=0;q<k;q++)up[i][j][q]=INF;
    while(m--){
        cin>>x>>y>>w;
        up[y][0][x%k]=w;
    }
    for(int i=0;i<n;i++){
        for(int j=1;j<logn;j++){
            for(int to=0;to<k;to++){
                for(int mid=0;mid<k;mid++){
                    up[i][j][to]=min(up[i][j-1][mid]+up[num(i,j-1,mid,k)][j-1][to],up[i][j][to]);
                }
            }
        }
    }
    /*for(int i=0;i<n;i++){
        for(int j=0;j<1;j++){
            for(int to=0;to<k;to++)cout<<up[i][j][to]<<' ';
            cout<<'\n';
        }
    }*/
    while(o--){
        cin>>x>>y;
        int ans=kth(y,x,k);
        if(ans==1e18)cout<<-1<<'\n';
        else cout<<ans<<'\n';
    }
}

Compilation message

toll.cpp: In function 'long long int kth(long long int, long long int, long long int)':
toll.cpp:15:9: warning: unused variable 'ans' [-Wunused-variable]
   15 |     int ans=INF,dif=x/k-y/k;
      |         ^~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 86 ms 33568 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 3 ms 852 KB Output is correct
6 Correct 3 ms 896 KB Output is correct
7 Correct 3 ms 852 KB Output is correct
8 Correct 91 ms 33548 KB Output is correct
9 Correct 90 ms 33560 KB Output is correct
10 Correct 49 ms 33580 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 121 ms 33560 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 19 ms 980 KB Output is correct
8 Correct 20 ms 1108 KB Output is correct
9 Correct 83 ms 33904 KB Output is correct
10 Correct 198 ms 35320 KB Output is correct
11 Correct 133 ms 34716 KB Output is correct
12 Correct 135 ms 34244 KB Output is correct
13 Correct 159 ms 22116 KB Output is correct
14 Correct 95 ms 21292 KB Output is correct
15 Correct 106 ms 20964 KB Output is correct
16 Correct 104 ms 20960 KB Output is correct

Subtask #3
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 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 980 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 4 ms 980 KB Output is correct
9 Correct 4 ms 980 KB Output is correct
10 Correct 63 ms 33776 KB Output is correct
11 Correct 100 ms 33968 KB Output is correct
12 Correct 142 ms 34048 KB Output is correct
13 Correct 157 ms 34104 KB Output is correct
14 Correct 124 ms 34140 KB Output is correct
15 Correct 92 ms 20756 KB Output is correct
16 Correct 86 ms 20756 KB Output is correct

Subtask #4
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 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 980 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 4 ms 980 KB Output is correct
9 Correct 4 ms 980 KB Output is correct
10 Correct 63 ms 33776 KB Output is correct
11 Correct 100 ms 33968 KB Output is correct
12 Correct 142 ms 34048 KB Output is correct
13 Correct 157 ms 34104 KB Output is correct
14 Correct 124 ms 34140 KB Output is correct
15 Correct 92 ms 20756 KB Output is correct
16 Correct 86 ms 20756 KB Output is correct
17 Correct 117 ms 34124 KB Output is correct
18 Correct 1 ms 212 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 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 7 ms 1000 KB Output is correct
24 Correct 8 ms 980 KB Output is correct
25 Correct 10 ms 1040 KB Output is correct
26 Correct 9 ms 980 KB Output is correct
27 Correct 74 ms 33872 KB Output is correct
28 Correct 151 ms 35164 KB Output is correct
29 Correct 173 ms 35460 KB Output is correct
30 Correct 132 ms 34892 KB Output is correct

Subtask #5
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 86 ms 33568 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 3 ms 852 KB Output is correct
6 Correct 3 ms 896 KB Output is correct
7 Correct 3 ms 852 KB Output is correct
8 Correct 91 ms 33548 KB Output is correct
9 Correct 90 ms 33560 KB Output is correct
10 Correct 49 ms 33580 KB Output is correct
11 Correct 121 ms 33560 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 19 ms 980 KB Output is correct
18 Correct 20 ms 1108 KB Output is correct
19 Correct 83 ms 33904 KB Output is correct
20 Correct 198 ms 35320 KB Output is correct
21 Correct 133 ms 34716 KB Output is correct
22 Correct 135 ms 34244 KB Output is correct
23 Correct 159 ms 22116 KB Output is correct
24 Correct 95 ms 21292 KB Output is correct
25 Correct 106 ms 20964 KB Output is correct
26 Correct 104 ms 20960 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 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 980 KB Output is correct
33 Correct 2 ms 980 KB Output is correct
34 Correct 4 ms 980 KB Output is correct
35 Correct 4 ms 980 KB Output is correct
36 Correct 63 ms 33776 KB Output is correct
37 Correct 100 ms 33968 KB Output is correct
38 Correct 142 ms 34048 KB Output is correct
39 Correct 157 ms 34104 KB Output is correct
40 Correct 124 ms 34140 KB Output is correct
41 Correct 92 ms 20756 KB Output is correct
42 Correct 86 ms 20756 KB Output is correct
43 Correct 117 ms 34124 KB Output is correct
44 Correct 1 ms 212 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 340 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 7 ms 1000 KB Output is correct
50 Correct 8 ms 980 KB Output is correct
51 Correct 10 ms 1040 KB Output is correct
52 Correct 9 ms 980 KB Output is correct
53 Correct 74 ms 33872 KB Output is correct
54 Correct 151 ms 35164 KB Output is correct
55 Correct 173 ms 35460 KB Output is correct
56 Correct 132 ms 34892 KB Output is correct
57 Correct 225 ms 36300 KB Output is correct
58 Correct 94 ms 33916 KB Output is correct
59 Correct 134 ms 34764 KB Output is correct