oj.uz

Submission #419749

# Submission time Handle Problem Language Result Execution time Memory
419749 2021-06-07T12:14:44 Z Kerim Group Photo (JOI21_ho_t3) C++17
64 / 100
 5000 ms 412628 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=5002;
int n,arr[N],inv[N][N],dp[N][N],odp[N][N];
int F[N][N],AB[N][N],BA[N][N],par[N][N];
int g(int x,int y){
	if(x>=y)return 0;
	if(~odp[x][y])return odp[x][y];
	return odp[x][y] = g(x,y-1) + par[y][y] - par[x-1][y];
}
int cost(int a,int b,int c){
	return g(a+1,b-1)+F[a][b-1]+(BA[b][b-1]-BA[b][a])+AB[c][b];
}
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]]++;
	for(int i=1;i<=n;i++)
		for(int j=1;j<=n;j++)
			par[i][j]=par[i-1][j]+inv[j][i];
	for(int y=1;y<=n;y++)
		for(int z=y+1;z<=n;z++){
			F[y][z]=F[y][z-1];
			for(int x=1;x<=y;x++)
				F[y][z]+=inv[x][z];
		}
	for(int i=1;i<=n;i++)
		for(int j=1;j<=n;j++){
			BA[i][j]=BA[i][j-1]+inv[i][j];
			AB[i][j]=AB[i][j-1]+inv[j][i];
		}
	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:44:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
Main.cpp:45:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |  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 93 ms 196164 KB Output is correct
2 Correct 90 ms 196160 KB Output is correct
3 Correct 92 ms 196244 KB Output is correct
4 Correct 93 ms 196272 KB Output is correct
5 Correct 94 ms 196292 KB Output is correct
6 Correct 90 ms 196204 KB Output is correct
7 Correct 91 ms 196284 KB Output is correct
8 Correct 91 ms 196212 KB Output is correct
9 Correct 104 ms 196292 KB Output is correct
10 Correct 96 ms 196300 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 196164 KB Output is correct
2 Correct 90 ms 196160 KB Output is correct
3 Correct 92 ms 196244 KB Output is correct
4 Correct 93 ms 196272 KB Output is correct
5 Correct 94 ms 196292 KB Output is correct
6 Correct 90 ms 196204 KB Output is correct
7 Correct 91 ms 196284 KB Output is correct
8 Correct 91 ms 196212 KB Output is correct
9 Correct 104 ms 196292 KB Output is correct
10 Correct 96 ms 196300 KB Output is correct
11 Correct 108 ms 196432 KB Output is correct
12 Correct 93 ms 196468 KB Output is correct
13 Correct 94 ms 196492 KB Output is correct
14 Correct 92 ms 196480 KB Output is correct
15 Correct 89 ms 196440 KB Output is correct
16 Correct 99 ms 196496 KB Output is correct
17 Correct 102 ms 196548 KB Output is correct
18 Correct 88 ms 196488 KB Output is correct
19 Correct 86 ms 196540 KB Output is correct
20 Correct 86 ms 196516 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 196164 KB Output is correct
2 Correct 90 ms 196160 KB Output is correct
3 Correct 92 ms 196244 KB Output is correct
4 Correct 93 ms 196272 KB Output is correct
5 Correct 94 ms 196292 KB Output is correct
6 Correct 90 ms 196204 KB Output is correct
7 Correct 91 ms 196284 KB Output is correct
8 Correct 91 ms 196212 KB Output is correct
9 Correct 104 ms 196292 KB Output is correct
10 Correct 96 ms 196300 KB Output is correct
11 Correct 108 ms 196432 KB Output is correct
12 Correct 93 ms 196468 KB Output is correct
13 Correct 94 ms 196492 KB Output is correct
14 Correct 92 ms 196480 KB Output is correct
15 Correct 89 ms 196440 KB Output is correct
16 Correct 99 ms 196496 KB Output is correct
17 Correct 102 ms 196548 KB Output is correct
18 Correct 88 ms 196488 KB Output is correct
19 Correct 86 ms 196540 KB Output is correct
20 Correct 86 ms 196516 KB Output is correct
21 Correct 114 ms 200752 KB Output is correct
22 Correct 104 ms 200804 KB Output is correct
23 Correct 111 ms 200760 KB Output is correct
24 Correct 117 ms 200900 KB Output is correct
25 Correct 112 ms 200856 KB Output is correct
26 Correct 114 ms 200844 KB Output is correct
27 Correct 120 ms 200844 KB Output is correct
28 Correct 111 ms 200892 KB Output is correct
29 Correct 108 ms 200900 KB Output is correct
30 Correct 106 ms 200812 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 196164 KB Output is correct
2 Correct 90 ms 196160 KB Output is correct
3 Correct 92 ms 196244 KB Output is correct
4 Correct 93 ms 196272 KB Output is correct
5 Correct 94 ms 196292 KB Output is correct
6 Correct 90 ms 196204 KB Output is correct
7 Correct 91 ms 196284 KB Output is correct
8 Correct 91 ms 196212 KB Output is correct
9 Correct 104 ms 196292 KB Output is correct
10 Correct 96 ms 196300 KB Output is correct
11 Correct 108 ms 196432 KB Output is correct
12 Correct 93 ms 196468 KB Output is correct
13 Correct 94 ms 196492 KB Output is correct
14 Correct 92 ms 196480 KB Output is correct
15 Correct 89 ms 196440 KB Output is correct
16 Correct 99 ms 196496 KB Output is correct
17 Correct 102 ms 196548 KB Output is correct
18 Correct 88 ms 196488 KB Output is correct
19 Correct 86 ms 196540 KB Output is correct
20 Correct 86 ms 196516 KB Output is correct
21 Correct 114 ms 200752 KB Output is correct
22 Correct 104 ms 200804 KB Output is correct
23 Correct 111 ms 200760 KB Output is correct
24 Correct 117 ms 200900 KB Output is correct
25 Correct 112 ms 200856 KB Output is correct
26 Correct 114 ms 200844 KB Output is correct
27 Correct 120 ms 200844 KB Output is correct
28 Correct 111 ms 200892 KB Output is correct
29 Correct 108 ms 200900 KB Output is correct
30 Correct 106 ms 200812 KB Output is correct
31 Correct 1239 ms 223440 KB Output is correct
32 Correct 1297 ms 223488 KB Output is correct
33 Correct 1286 ms 223496 KB Output is correct
34 Correct 1281 ms 223564 KB Output is correct
35 Correct 1334 ms 223564 KB Output is correct
36 Correct 1307 ms 223636 KB Output is correct
37 Correct 1278 ms 223536 KB Output is correct
38 Correct 1340 ms 223520 KB Output is correct
39 Correct 1266 ms 223552 KB Output is correct
40 Correct 1249 ms 223616 KB Output is correct

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 196164 KB Output is correct
2 Correct 90 ms 196160 KB Output is correct
3 Correct 92 ms 196244 KB Output is correct
4 Correct 93 ms 196272 KB Output is correct
5 Correct 94 ms 196292 KB Output is correct
6 Correct 90 ms 196204 KB Output is correct
7 Correct 91 ms 196284 KB Output is correct
8 Correct 91 ms 196212 KB Output is correct
9 Correct 104 ms 196292 KB Output is correct
10 Correct 96 ms 196300 KB Output is correct
11 Correct 108 ms 196432 KB Output is correct
12 Correct 93 ms 196468 KB Output is correct
13 Correct 94 ms 196492 KB Output is correct
14 Correct 92 ms 196480 KB Output is correct
15 Correct 89 ms 196440 KB Output is correct
16 Correct 99 ms 196496 KB Output is correct
17 Correct 102 ms 196548 KB Output is correct
18 Correct 88 ms 196488 KB Output is correct
19 Correct 86 ms 196540 KB Output is correct
20 Correct 86 ms 196516 KB Output is correct
21 Correct 114 ms 200752 KB Output is correct
22 Correct 104 ms 200804 KB Output is correct
23 Correct 111 ms 200760 KB Output is correct
24 Correct 117 ms 200900 KB Output is correct
25 Correct 112 ms 200856 KB Output is correct
26 Correct 114 ms 200844 KB Output is correct
27 Correct 120 ms 200844 KB Output is correct
28 Correct 111 ms 200892 KB Output is correct
29 Correct 108 ms 200900 KB Output is correct
30 Correct 106 ms 200812 KB Output is correct
31 Correct 1239 ms 223440 KB Output is correct
32 Correct 1297 ms 223488 KB Output is correct
33 Correct 1286 ms 223496 KB Output is correct
34 Correct 1281 ms 223564 KB Output is correct
35 Correct 1334 ms 223564 KB Output is correct
36 Correct 1307 ms 223636 KB Output is correct
37 Correct 1278 ms 223536 KB Output is correct
38 Correct 1340 ms 223520 KB Output is correct
39 Correct 1266 ms 223552 KB Output is correct
40 Correct 1249 ms 223616 KB Output is correct
41 Execution timed out 5062 ms 412628 KB Time limit exceeded
42 Halted 0 ms 0 KB -