oj.uz

Submission #742371

# Submission time Handle Problem Language Result Execution time Memory
742371 2023-05-16T07:12:16 Z jamezzz Tortoise (CEOI21_tortoise) C++17
48 / 100
 195 ms 1108 KB 
#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf
#define pb push_back
#define INF 1023456789

#define maxn 305

int n,a[maxn],pv[maxn],nx[maxn];
vector<int> shop,play;
int memo[2*maxn][maxn];

int dp(int t,int i){
	if(i>shop.size()||t>2*n)return 0;
	if(memo[t][i]!=-1)return memo[t][i];
	int num=0;
	int sd=INF;
	if(pv[i]!=-1)sd=min(sd,shop[i]-play[pv[i]]);
	if(nx[i]<play.size())sd=min(sd,play[nx[i]]-shop[i]);
	int cur=t,ans=0;
	for(int x=0;x<=a[shop[i]];++x){
		//back and forth x-1 times, then get 1 and go to another shop
		if(cur>2*shop[i])break;
		for(int y=i;y<shop.size();++y){
			int take=INF;
			if(x==0)take=min(take,abs(shop[y]-shop[i]));
			if(pv[i]!=-1)take=min(take,abs(shop[y]-play[pv[i]])+abs(shop[i]-play[pv[i]]));
			if(nx[i]<play.size())take=min(take,abs(shop[y]-play[nx[i]])+abs(shop[i]-play[nx[i]]));
			if(y!=i)ans=max(ans,dp(cur+take,y)+x);
			else ans=max(ans,x);
		}
		if(x>0)cur+=2*sd;
	}
	//pf("dp %d %d: %d\n",t,i,ans);
	return memo[t][i]=ans;
}

int main(){
	sf("%d",&n);
	int sm=0;
	for(int i=0;i<n;++i){
		sf("%d",&a[i]);
		if(a[i]==-1)play.pb(i);
		else shop.pb(i),sm+=a[i];
	}
	if(shop.size()==0){
		pf("0\n");
		return 0;
	}
	int cur=-1;
	for(int x=0;x<shop.size();++x){
		int i=shop[x];
		while(cur+1<play.size()&&play[cur+1]<i)++cur;
		pv[x]=cur;
		nx[x]=cur+1;
	}
	memset(memo,-1,sizeof memo);
	pf("%d\n",sm-dp(shop[0],0));
}

Compilation message

tortoise.cpp: In function 'int dp(int, int)':
tortoise.cpp:16:6: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |  if(i>shop.size()||t>2*n)return 0;
      |     ~^~~~~~~~~~~~
tortoise.cpp:21:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  if(nx[i]<play.size())sd=min(sd,play[nx[i]]-shop[i]);
      |     ~~~~~^~~~~~~~~~~~
tortoise.cpp:26:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |   for(int y=i;y<shop.size();++y){
      |               ~^~~~~~~~~~~~
tortoise.cpp:30:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |    if(nx[i]<play.size())take=min(take,abs(shop[y]-play[nx[i]])+abs(shop[i]-play[nx[i]]));
      |       ~~~~~^~~~~~~~~~~~
tortoise.cpp:18:6: warning: unused variable 'num' [-Wunused-variable]
   18 |  int num=0;
      |      ^~~
tortoise.cpp: In function 'int main()':
tortoise.cpp:53:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for(int x=0;x<shop.size();++x){
      |              ~^~~~~~~~~~~~
tortoise.cpp:55:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |   while(cur+1<play.size()&&play[cur+1]<i)++cur;
      |         ~~~~~^~~~~~~~~~~~
tortoise.cpp:41:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |  sf("%d",&n);
      |    ^
tortoise.cpp:44:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |   sf("%d",&a[i]);
      |     ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 952 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 952 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 948 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 956 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 956 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 1 ms 980 KB Output is correct
21 Correct 1 ms 980 KB Output is correct
22 Correct 1 ms 948 KB Output is correct
23 Correct 1 ms 944 KB Output is correct
24 Correct 1 ms 948 KB Output is correct
25 Correct 1 ms 980 KB Output is correct
26 Correct 1 ms 980 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 952 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 952 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 948 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 956 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 956 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 1 ms 980 KB Output is correct
21 Correct 1 ms 980 KB Output is correct
22 Correct 1 ms 948 KB Output is correct
23 Correct 1 ms 944 KB Output is correct
24 Correct 1 ms 948 KB Output is correct
25 Correct 1 ms 980 KB Output is correct
26 Correct 1 ms 980 KB Output is correct
27 Correct 16 ms 1048 KB Output is correct
28 Correct 40 ms 980 KB Output is correct
29 Correct 21 ms 980 KB Output is correct
30 Correct 19 ms 980 KB Output is correct
31 Correct 20 ms 980 KB Output is correct
32 Correct 9 ms 1060 KB Output is correct
33 Correct 23 ms 980 KB Output is correct
34 Correct 16 ms 948 KB Output is correct
35 Correct 24 ms 1036 KB Output is correct
36 Correct 20 ms 952 KB Output is correct
37 Correct 17 ms 980 KB Output is correct
38 Correct 18 ms 1056 KB Output is correct
39 Correct 20 ms 980 KB Output is correct
40 Correct 16 ms 980 KB Output is correct
41 Correct 14 ms 1056 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 952 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 952 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 948 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 956 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 956 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 1 ms 980 KB Output is correct
21 Correct 1 ms 980 KB Output is correct
22 Correct 1 ms 948 KB Output is correct
23 Correct 1 ms 944 KB Output is correct
24 Correct 1 ms 948 KB Output is correct
25 Correct 1 ms 980 KB Output is correct
26 Correct 1 ms 980 KB Output is correct
27 Correct 16 ms 1048 KB Output is correct
28 Correct 40 ms 980 KB Output is correct
29 Correct 21 ms 980 KB Output is correct
30 Correct 19 ms 980 KB Output is correct
31 Correct 20 ms 980 KB Output is correct
32 Correct 9 ms 1060 KB Output is correct
33 Correct 23 ms 980 KB Output is correct
34 Correct 16 ms 948 KB Output is correct
35 Correct 24 ms 1036 KB Output is correct
36 Correct 20 ms 952 KB Output is correct
37 Correct 17 ms 980 KB Output is correct
38 Correct 18 ms 1056 KB Output is correct
39 Correct 20 ms 980 KB Output is correct
40 Correct 16 ms 980 KB Output is correct
41 Correct 14 ms 1056 KB Output is correct
42 Correct 7 ms 948 KB Output is correct
43 Correct 9 ms 1052 KB Output is correct
44 Correct 15 ms 980 KB Output is correct
45 Correct 22 ms 980 KB Output is correct
46 Correct 10 ms 980 KB Output is correct
47 Correct 10 ms 980 KB Output is correct
48 Correct 24 ms 952 KB Output is correct
49 Correct 14 ms 1052 KB Output is correct
50 Correct 80 ms 1040 KB Output is correct
51 Correct 99 ms 1040 KB Output is correct
52 Correct 37 ms 1032 KB Output is correct
53 Correct 115 ms 940 KB Output is correct
54 Correct 195 ms 1036 KB Output is correct
55 Correct 85 ms 1052 KB Output is correct
56 Correct 5 ms 1108 KB Output is correct
57 Correct 16 ms 1056 KB Output is correct
58 Correct 39 ms 1044 KB Output is correct
59 Correct 22 ms 980 KB Output is correct
60 Correct 67 ms 1040 KB Output is correct
61 Correct 27 ms 1040 KB Output is correct
62 Correct 53 ms 1040 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 952 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 952 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 948 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 956 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 956 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 1 ms 980 KB Output is correct
21 Correct 1 ms 980 KB Output is correct
22 Correct 1 ms 948 KB Output is correct
23 Correct 1 ms 944 KB Output is correct
24 Correct 1 ms 948 KB Output is correct
25 Correct 1 ms 980 KB Output is correct
26 Correct 1 ms 980 KB Output is correct
27 Correct 16 ms 1048 KB Output is correct
28 Correct 40 ms 980 KB Output is correct
29 Correct 21 ms 980 KB Output is correct
30 Correct 19 ms 980 KB Output is correct
31 Correct 20 ms 980 KB Output is correct
32 Correct 9 ms 1060 KB Output is correct
33 Correct 23 ms 980 KB Output is correct
34 Correct 16 ms 948 KB Output is correct
35 Correct 24 ms 1036 KB Output is correct
36 Correct 20 ms 952 KB Output is correct
37 Correct 17 ms 980 KB Output is correct
38 Correct 18 ms 1056 KB Output is correct
39 Correct 20 ms 980 KB Output is correct
40 Correct 16 ms 980 KB Output is correct
41 Correct 14 ms 1056 KB Output is correct
42 Correct 7 ms 948 KB Output is correct
43 Correct 9 ms 1052 KB Output is correct
44 Correct 15 ms 980 KB Output is correct
45 Correct 22 ms 980 KB Output is correct
46 Correct 10 ms 980 KB Output is correct
47 Correct 10 ms 980 KB Output is correct
48 Correct 24 ms 952 KB Output is correct
49 Correct 14 ms 1052 KB Output is correct
50 Correct 80 ms 1040 KB Output is correct
51 Correct 99 ms 1040 KB Output is correct
52 Correct 37 ms 1032 KB Output is correct
53 Correct 115 ms 940 KB Output is correct
54 Correct 195 ms 1036 KB Output is correct
55 Correct 85 ms 1052 KB Output is correct
56 Correct 5 ms 1108 KB Output is correct
57 Correct 16 ms 1056 KB Output is correct
58 Correct 39 ms 1044 KB Output is correct
59 Correct 22 ms 980 KB Output is correct
60 Correct 67 ms 1040 KB Output is correct
61 Correct 27 ms 1040 KB Output is correct
62 Correct 53 ms 1040 KB Output is correct
63 Incorrect 1 ms 980 KB Output isn't correct
64 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 952 KB Output is correct
2 Correct 1 ms 980 KB Output is correct
3 Correct 1 ms 952 KB Output is correct
4 Correct 1 ms 980 KB Output is correct
5 Correct 1 ms 948 KB Output is correct
6 Correct 1 ms 980 KB Output is correct
7 Correct 1 ms 980 KB Output is correct
8 Correct 1 ms 956 KB Output is correct
9 Correct 1 ms 980 KB Output is correct
10 Correct 1 ms 980 KB Output is correct
11 Correct 1 ms 980 KB Output is correct
12 Correct 1 ms 980 KB Output is correct
13 Correct 1 ms 980 KB Output is correct
14 Correct 1 ms 956 KB Output is correct
15 Correct 1 ms 980 KB Output is correct
16 Correct 1 ms 980 KB Output is correct
17 Correct 1 ms 980 KB Output is correct
18 Correct 1 ms 980 KB Output is correct
19 Correct 1 ms 980 KB Output is correct
20 Correct 1 ms 980 KB Output is correct
21 Correct 1 ms 980 KB Output is correct
22 Correct 1 ms 948 KB Output is correct
23 Correct 1 ms 944 KB Output is correct
24 Correct 1 ms 948 KB Output is correct
25 Correct 1 ms 980 KB Output is correct
26 Correct 1 ms 980 KB Output is correct
27 Correct 16 ms 1048 KB Output is correct
28 Correct 40 ms 980 KB Output is correct
29 Correct 21 ms 980 KB Output is correct
30 Correct 19 ms 980 KB Output is correct
31 Correct 20 ms 980 KB Output is correct
32 Correct 9 ms 1060 KB Output is correct
33 Correct 23 ms 980 KB Output is correct
34 Correct 16 ms 948 KB Output is correct
35 Correct 24 ms 1036 KB Output is correct
36 Correct 20 ms 952 KB Output is correct
37 Correct 17 ms 980 KB Output is correct
38 Correct 18 ms 1056 KB Output is correct
39 Correct 20 ms 980 KB Output is correct
40 Correct 16 ms 980 KB Output is correct
41 Correct 14 ms 1056 KB Output is correct
42 Correct 7 ms 948 KB Output is correct
43 Correct 9 ms 1052 KB Output is correct
44 Correct 15 ms 980 KB Output is correct
45 Correct 22 ms 980 KB Output is correct
46 Correct 10 ms 980 KB Output is correct
47 Correct 10 ms 980 KB Output is correct
48 Correct 24 ms 952 KB Output is correct
49 Correct 14 ms 1052 KB Output is correct
50 Correct 80 ms 1040 KB Output is correct
51 Correct 99 ms 1040 KB Output is correct
52 Correct 37 ms 1032 KB Output is correct
53 Correct 115 ms 940 KB Output is correct
54 Correct 195 ms 1036 KB Output is correct
55 Correct 85 ms 1052 KB Output is correct
56 Correct 5 ms 1108 KB Output is correct
57 Correct 16 ms 1056 KB Output is correct
58 Correct 39 ms 1044 KB Output is correct
59 Correct 22 ms 980 KB Output is correct
60 Correct 67 ms 1040 KB Output is correct
61 Correct 27 ms 1040 KB Output is correct
62 Correct 53 ms 1040 KB Output is correct
63 Incorrect 1 ms 980 KB Output isn't correct
64 Halted 0 ms 0 KB -