oj.uz

Submission #419667

# Submission time Handle Problem Language Result Execution time Memory
419667 2021-06-07T11:11:35 Z Kerim Group Photo (JOI21_ho_t3) C++17
12 / 100
 5000 ms 32864 KB 
#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;
 
typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N=202;
int n,arr[N],inv[N][N],dp[N][N];
int odp[N][N][N];
int cost(int a,int b,int c){
	if(~odp[a][b][c])return odp[a][b][c];
	vector<int>v,g;
	for(int i=b-1;i>a;i--)v.pb(i);
	if(c)v.pb(c);
	for(int i=1;i<=a;i++)g.pb(i);
	g.pb(b);
	int res=0;
	for(int i=0;i<int(g.size());i++)
		for(int j=0;j<int(v.size());j++)
			res+=inv[g[i]][v[j]];
	for(int i=0;i<int(v.size());i++)
		for(int j=i+1;j<int(v.size());j++)
			res+=inv[v[i]][v[j]];
	return odp[a][b][c]=res;
}
int rec(int a,int b){
	if(b==n)return cost(a,b,0);
	int &ret=dp[a][b];
	if(~ret)return ret;
	ret=INF;
	for(int i=b+1;i<=n;i++)
		umin(ret,rec(b,i)+cost(a,b,i));
	return ret;
}
int main(){
	//freopen("file.in", "r", stdin);
	memset(dp,-1,sizeof dp);
	memset(odp,-1,sizeof odp);
	scanf("%d",&n);
	for(int i=1;i<=n;i++)scanf("%d",arr+i);
	for(int i=2;i<=n;i++)
		for(int j=1;j<i;j++)
			inv[arr[i]][arr[j]]++;
	int ans=INF;
	for(int i=1;i<=n;i++)
		umin(ans,rec(0,i));
	printf("%d\n",ans);
	return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:52:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
Main.cpp:53:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |  for(int i=1;i<=n;i++)scanf("%d",arr+i);
      |                       ~~~~~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 32716 KB Output is correct
2 Correct 15 ms 32708 KB Output is correct
3 Correct 15 ms 32712 KB Output is correct
4 Correct 14 ms 32676 KB Output is correct
5 Correct 15 ms 32716 KB Output is correct
6 Correct 15 ms 32660 KB Output is correct
7 Correct 15 ms 32712 KB Output is correct
8 Correct 15 ms 32712 KB Output is correct
9 Correct 15 ms 32716 KB Output is correct
10 Correct 14 ms 32716 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 32716 KB Output is correct
2 Correct 15 ms 32708 KB Output is correct
3 Correct 15 ms 32712 KB Output is correct
4 Correct 14 ms 32676 KB Output is correct
5 Correct 15 ms 32716 KB Output is correct
6 Correct 15 ms 32660 KB Output is correct
7 Correct 15 ms 32712 KB Output is correct
8 Correct 15 ms 32712 KB Output is correct
9 Correct 15 ms 32716 KB Output is correct
10 Correct 14 ms 32716 KB Output is correct
11 Correct 15 ms 32716 KB Output is correct
12 Correct 18 ms 32628 KB Output is correct
13 Correct 16 ms 32700 KB Output is correct
14 Correct 18 ms 32716 KB Output is correct
15 Correct 15 ms 32716 KB Output is correct
16 Correct 15 ms 32708 KB Output is correct
17 Correct 15 ms 32720 KB Output is correct
18 Correct 16 ms 32716 KB Output is correct
19 Correct 15 ms 32716 KB Output is correct
20 Correct 15 ms 32656 KB Output is correct

Subtask #3
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 32716 KB Output is correct
2 Correct 15 ms 32708 KB Output is correct
3 Correct 15 ms 32712 KB Output is correct
4 Correct 14 ms 32676 KB Output is correct
5 Correct 15 ms 32716 KB Output is correct
6 Correct 15 ms 32660 KB Output is correct
7 Correct 15 ms 32712 KB Output is correct
8 Correct 15 ms 32712 KB Output is correct
9 Correct 15 ms 32716 KB Output is correct
10 Correct 14 ms 32716 KB Output is correct
11 Correct 15 ms 32716 KB Output is correct
12 Correct 18 ms 32628 KB Output is correct
13 Correct 16 ms 32700 KB Output is correct
14 Correct 18 ms 32716 KB Output is correct
15 Correct 15 ms 32716 KB Output is correct
16 Correct 15 ms 32708 KB Output is correct
17 Correct 15 ms 32720 KB Output is correct
18 Correct 16 ms 32716 KB Output is correct
19 Correct 15 ms 32716 KB Output is correct
20 Correct 15 ms 32656 KB Output is correct
21 Execution timed out 5065 ms 32864 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 32716 KB Output is correct
2 Correct 15 ms 32708 KB Output is correct
3 Correct 15 ms 32712 KB Output is correct
4 Correct 14 ms 32676 KB Output is correct
5 Correct 15 ms 32716 KB Output is correct
6 Correct 15 ms 32660 KB Output is correct
7 Correct 15 ms 32712 KB Output is correct
8 Correct 15 ms 32712 KB Output is correct
9 Correct 15 ms 32716 KB Output is correct
10 Correct 14 ms 32716 KB Output is correct
11 Correct 15 ms 32716 KB Output is correct
12 Correct 18 ms 32628 KB Output is correct
13 Correct 16 ms 32700 KB Output is correct
14 Correct 18 ms 32716 KB Output is correct
15 Correct 15 ms 32716 KB Output is correct
16 Correct 15 ms 32708 KB Output is correct
17 Correct 15 ms 32720 KB Output is correct
18 Correct 16 ms 32716 KB Output is correct
19 Correct 15 ms 32716 KB Output is correct
20 Correct 15 ms 32656 KB Output is correct
21 Execution timed out 5065 ms 32864 KB Time limit exceeded
22 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 32716 KB Output is correct
2 Correct 15 ms 32708 KB Output is correct
3 Correct 15 ms 32712 KB Output is correct
4 Correct 14 ms 32676 KB Output is correct
5 Correct 15 ms 32716 KB Output is correct
6 Correct 15 ms 32660 KB Output is correct
7 Correct 15 ms 32712 KB Output is correct
8 Correct 15 ms 32712 KB Output is correct
9 Correct 15 ms 32716 KB Output is correct
10 Correct 14 ms 32716 KB Output is correct
11 Correct 15 ms 32716 KB Output is correct
12 Correct 18 ms 32628 KB Output is correct
13 Correct 16 ms 32700 KB Output is correct
14 Correct 18 ms 32716 KB Output is correct
15 Correct 15 ms 32716 KB Output is correct
16 Correct 15 ms 32708 KB Output is correct
17 Correct 15 ms 32720 KB Output is correct
18 Correct 16 ms 32716 KB Output is correct
19 Correct 15 ms 32716 KB Output is correct
20 Correct 15 ms 32656 KB Output is correct
21 Execution timed out 5065 ms 32864 KB Time limit exceeded
22 Halted 0 ms 0 KB -