oj.uz

답안 #391268

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
391268 2021-04-18T10:58:26 Z lukameladze Collecting Stamps 3 (JOI20_ho_t3) C++14
15 / 100
 83 ms 111124 KB 
# include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
using namespace std;
const int N=215;
long long  n,x[N],dp[N][N][N][2],t[N],le,ri,l,ans,ff,ff1,dist;
long long go(long long x, long long xx) {
     if (x<xx) swap(x,xx);
     return min(x-xx,xx-x+l);
}
long long mn(long long a, long long b , long long c) {
     return(min(a,min(b,c)));
}
int check(int le ,int ri) {
     if (le==0) return 1;
     if (le<ri) return 0;
     return 1;
}
int main() {
     cin>>n>>l;
     for (int i=1; i<=n; i++) {
          cin>>x[i];
     }
     for (int i=1; i<=n; i++) {
          cin>>t[i];
     }
     for (int le=0; le<=n+1; le++) {
          for (int ri=0; ri<=n+1; ri++) {
               for (int cnt=0; cnt<=n+1; cnt++) {
                    dp[le][ri][cnt][0]=dp[le][ri][cnt][1]=1e17;
               }
          }
     }
     dp[0][0][0][0]=0;
     dp[0][0][0][1]=0;
     x[0]=l;
     for (int sz=1; sz<=n; sz++) {
          for (int ri=0; ri<=sz; ri++) {
               if (ri==sz) le=0; 
                    else le=n-(sz-ri)+1;
               ff=ff1=0;
                 if (le<ri && le!=0) continue;
               for (int cnt=0; cnt<=sz; cnt++) {
                  if (le && check((le+1)%(n+1),ri))
                  {
                       dist=min(dp[(le+1)%(n+1)][ri][cnt][0]+go(x[(le+1)%(n+1)],x[le]),dp[(le+1)%(n+1)][ri][cnt][1]+go(x[ri], x[le]));
                     //  if (dist<=t[le]) dp[le][ri][cnt+1][0]=min(dp[le][ri][cnt+1][0],dist);
                        dp[le][ri][cnt][0]=mn(dp[le][ri][cnt][0],dp[(le+1)%(n+1)][ri][cnt][0]+go(x[(le+1)%(n+1)],x[le]),dp[(le+1)%(n+1)][ri][cnt][1]+go(x[ri], x[le]));
                  }
                     if (ri) {
                    dist=min(dp[le][ri-1][cnt][1]+go(x[ri-1], x[ri]),dp[le][ri-1][cnt][0]+go(x[le],x[ri]));
                   // if (dist<=t[ri]) dp[le][ri][cnt+1][1]=min(dp[le][ri][cnt+1][1],dist);
                    dp[le][ri][cnt][1]=mn(dp[le][ri][cnt][1],dp[le][ri-1][cnt][1]+go(x[ri-1], x[ri]),dp[le][ri-1][cnt][0]+go(x[le],x[ri]));
                    }
                    if (dp[le][ri][cnt][0]<(long long)1e17 || dp[le][ri][cnt][1]<(long long)1e17) { ans=max(ans,(long long)cnt);}
               }
       //        if (sz==2 && le==6 && ri==1) cout<<dp[6][1][2][1]<<endl;
               for (int cnt=sz; cnt>=1; cnt--) {
                    if (dp[le][ri][cnt-1][1]<=t[ri] && !ff) {
                         ff=1;
                         dp[le][ri][cnt][1]=min(dp[le][ri][cnt][1],dp[le][ri][cnt-1][1]);
                    }
                    if (dp[le][ri][cnt-1][0]<=t[le] && !ff1) {
                         ff1=1;
                         dp[le][ri][cnt][0]=min(dp[le][ri][cnt][0],dp[le][ri][cnt-1][0]);
                    }
                    if (dp[le][ri][cnt][0]<(long long)1e17 || dp[le][ri][cnt][1]<(long long)1e17) { ans=max(ans,(long long)cnt);}
               }
          }
     }
     //cout<<dp[6][1][2][0]<<endl;
     cout<<ans<<endl;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 972 KB Output is correct
13 Correct 1 ms 972 KB Output is correct
14 Correct 1 ms 588 KB Output is correct
15 Correct 1 ms 588 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 1 ms 972 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 972 KB Output is correct
13 Correct 1 ms 972 KB Output is correct
14 Correct 1 ms 588 KB Output is correct
15 Correct 1 ms 588 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 1 ms 972 KB Output is correct
18 Correct 1 ms 1100 KB Output is correct
19 Correct 1 ms 716 KB Output is correct
20 Correct 1 ms 972 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 716 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 972 KB Output is correct
25 Correct 1 ms 1100 KB Output is correct
26 Correct 1 ms 1100 KB Output is correct
27 Correct 1 ms 588 KB Output is correct
28 Correct 1 ms 716 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1228 KB Output is correct
31 Correct 1 ms 1100 KB Output is correct
32 Correct 1 ms 972 KB Output is correct
33 Correct 1 ms 1228 KB Output is correct
34 Correct 1 ms 1228 KB Output is correct
35 Correct 1 ms 1228 KB Output is correct

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 972 KB Output is correct
13 Correct 1 ms 972 KB Output is correct
14 Correct 1 ms 588 KB Output is correct
15 Correct 1 ms 588 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 1 ms 972 KB Output is correct
18 Correct 83 ms 111124 KB Output is correct
19 Correct 48 ms 67620 KB Output is correct
20 Correct 25 ms 36316 KB Output is correct
21 Correct 45 ms 63908 KB Output is correct
22 Correct 61 ms 82688 KB Output is correct
23 Correct 19 ms 30864 KB Output is correct
24 Correct 16 ms 24268 KB Output is correct
25 Correct 19 ms 30308 KB Output is correct
26 Correct 7 ms 11724 KB Output is correct
27 Correct 20 ms 31564 KB Output is correct
28 Correct 14 ms 22544 KB Output is correct
29 Incorrect 21 ms 32204 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 460 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 716 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 588 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 716 KB Output is correct
9 Correct 1 ms 972 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 972 KB Output is correct
13 Correct 1 ms 972 KB Output is correct
14 Correct 1 ms 588 KB Output is correct
15 Correct 1 ms 588 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 1 ms 972 KB Output is correct
18 Correct 1 ms 1100 KB Output is correct
19 Correct 1 ms 716 KB Output is correct
20 Correct 1 ms 972 KB Output is correct
21 Correct 1 ms 1100 KB Output is correct
22 Correct 1 ms 716 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 972 KB Output is correct
25 Correct 1 ms 1100 KB Output is correct
26 Correct 1 ms 1100 KB Output is correct
27 Correct 1 ms 588 KB Output is correct
28 Correct 1 ms 716 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1228 KB Output is correct
31 Correct 1 ms 1100 KB Output is correct
32 Correct 1 ms 972 KB Output is correct
33 Correct 1 ms 1228 KB Output is correct
34 Correct 1 ms 1228 KB Output is correct
35 Correct 1 ms 1228 KB Output is correct
36 Correct 83 ms 111124 KB Output is correct
37 Correct 48 ms 67620 KB Output is correct
38 Correct 25 ms 36316 KB Output is correct
39 Correct 45 ms 63908 KB Output is correct
40 Correct 61 ms 82688 KB Output is correct
41 Correct 19 ms 30864 KB Output is correct
42 Correct 16 ms 24268 KB Output is correct
43 Correct 19 ms 30308 KB Output is correct
44 Correct 7 ms 11724 KB Output is correct
45 Correct 20 ms 31564 KB Output is correct
46 Correct 14 ms 22544 KB Output is correct
47 Incorrect 21 ms 32204 KB Output isn't correct
48 Halted 0 ms 0 KB -