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Submission #145207

# Submission time Handle Problem Language Result Execution time Memory
145207 2019-08-19T09:28:31 Z TadijaSebez Growing Vegetable is Fun 3 (JOI19_ho_t3) C++11
100 / 100
 303 ms 120860 KB 
#include <bits/stdc++.h>
using namespace std;
const int N=405;
const int inf=1e9+7;
//int dp[3][N][N],tmp[3][N][N];
int pos[3][N],cnt[3];
char s[N];
void Clear(int a[3][N][N]){ for(int i=0;i<3;i++) for(int j=0;j<N;j++) for(int k=0;k<N;k++) a[i][j][k]=inf;}
void ckmn(int &a, int b){ a=min(a,b);}
int dp[3][N][N][N],val[3][N][N][N];
bool was[3][N][N][N];
int go[3][3][N][N];
int Get(int r, int g, int y, int f)
{
	int ans=0;
	if(f==0) ans=go[0][1][r][g]+go[0][2][r][y];
	if(f==1) ans=go[1][0][g][r]+go[1][2][g][y];
	if(f==2) ans=go[2][0][y][r]+go[2][1][y][g];
	return ans;
	/*int z;
	if(f==0) z=pos[0][r];
	if(f==1) z=pos[1][g];
	if(f==2) z=pos[2][y];
	int ans=0;
	for(int i=0;i<3;i++) if(i!=f)
	{
		int p=i==0?r:i==1?g:y;
		for(int j=cnt[i];j>p;j--) if(pos[i][j]<z) ans++;
	}
	return ans;*/
	/*if(f==0)
	{
		if(g!=cnt[1]) val[f][r][g][y]=val[f][r][g+1][y]+(pos[0][r]>pos[1][g+1]);
		else if(y!=cnt[2]) val[f][r][g][y]=val[f][r][g][y+1]+(pos[0][r]>pos[2][y+1]);
		else val[f][r][g][y]=0;
	}
	if(f==1)
	{
		if(r!=cnt[0]) val[f][r][g][y]=val[f][r+1][g][y]+(pos[1][g]>pos[0][r+1]);
		else if(y!=cnt[2]) val[f][r][g][y]=val[f][r][g][y+1]+(pos[1][g]>pos[2][y+1]);
		else val[f][r][g][y]=0;
	}
	if(f==2)
	{
		if(g!=cnt[1]) val[f][r][g][y]=val[f][r][g+1][y]+(pos[2][y]>pos[1][g+1]);
		else if(r!=cnt[0]) val[f][r][g][y]=val[f][r+1][g][y]+(pos[2][y]>pos[0][r+1]);
		else val[f][r][g][y]=0;
	}
	return val[f][r][g][y];*/
}
int Solve(int r, int g, int y, int f)
{
	if(was[f][r][g][y]) return dp[f][r][g][y];
	was[f][r][g][y]=1;
	dp[f][r][g][y]=inf;
	int i=r+g+y;
	if(i==0) return dp[f][r][g][y]=0;
	if(f!=0 && r) ckmn(dp[f][r][g][y],Solve(r-1,g,y,0)+Get(r,g,y,0));
	if(f!=1 && g) ckmn(dp[f][r][g][y],Solve(r,g-1,y,1)+Get(r,g,y,1));
	if(f!=2 && y) ckmn(dp[f][r][g][y],Solve(r,g,y-1,2)+Get(r,g,y,2));
	return dp[f][r][g][y];
}
int main()
{
	int n;
	scanf("%i",&n);
	scanf("%s",s+1);
	for(int i=1;i<=n;i++)
	{
		if(s[i]=='R') pos[0][++cnt[0]]=i;
		if(s[i]=='G') pos[1][++cnt[1]]=i;
		if(s[i]=='Y') pos[2][++cnt[2]]=i;
	}
	for(int q=0;q<3;q++) for(int w=0;w<3;w++) if(q!=w)
	{
		for(int i=1;i<=cnt[q];i++)
		{
			int now=0;
			for(int j=cnt[w];j>=1;j--)
			{
				go[q][w][i][j]=now;
				now+=pos[q][i]>pos[w][j];
			}
			go[q][w][i][0]=now;
		}
	}
 	//for(int i=0;i<3;i++) reverse(pos[i]+1,pos[i]+1+cnt[i]);
	int ans=min(Solve(cnt[0],cnt[1],cnt[2],0),Solve(cnt[0],cnt[1],cnt[2],1));
	printf("%i\n",ans==inf?-1:ans);
	/*Clear(dp);
	//printf("%i %i %i\n",cnt[0],cnt[1],cnt[2]);
	if(cnt[0]) dp[0][cnt[0]-1][cnt[1]]=pos[0][cnt[0]]-1;
	if(cnt[1]) dp[1][cnt[0]][cnt[1]-1]=pos[1][cnt[1]]-1;
	if(cnt[2]) dp[2][cnt[0]][cnt[1]]=pos[2][cnt[2]]-1;
	for(int i=2;i<=n;i++)
	{
		Clear(tmp);
		for(int f=0;f<3;f++)
			for(int r=0;r<=cnt[0];r++)
				for(int g=0;g<=cnt[1];g++) if(dp[f][r][g]!=inf)
				{
					int y=n-i-r-g+1;
					//printf("%i %i %i %i: %i\n",f,r,g,y,dp[f][r][g]);
					if(f!=0 && r) ckmn(tmp[0][r-1][g],dp[f][r][g]+max(0,pos[0][r]-i));
					if(f!=1 && g) ckmn(tmp[1][r][g-1],dp[f][r][g]+max(0,pos[1][g]-i));
					if(f!=2 && y) ckmn(tmp[2][r][g],dp[f][r][g]+max(0,pos[2][y]-i));
				}
		for(int f=0;f<3;f++)
			for(int r=0;r<=cnt[0];r++)
				for(int g=0;g<=cnt[1];g++)
					dp[f][r][g]=tmp[f][r][g];
	}
	int ans=inf;
	for(int f=0;f<3;f++) ckmn(ans,dp[f][0][0]);
	printf("%i\n",ans==inf?-1:ans);*/
	return 0;
}

Compilation message

joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:66:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i",&n);
  ~~~~~^~~~~~~~~
joi2019_ho_t3.cpp:67:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s+1);
  ~~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 632 KB Output is correct
6 Correct 2 ms 760 KB Output is correct
7 Correct 2 ms 760 KB Output is correct
8 Correct 2 ms 760 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 2 ms 760 KB Output is correct
12 Correct 2 ms 760 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 764 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 2 ms 632 KB Output is correct
17 Correct 2 ms 376 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 632 KB Output is correct
6 Correct 2 ms 760 KB Output is correct
7 Correct 2 ms 760 KB Output is correct
8 Correct 2 ms 760 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 2 ms 760 KB Output is correct
12 Correct 2 ms 760 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 764 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 2 ms 632 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 5 ms 3704 KB Output is correct
19 Correct 5 ms 3064 KB Output is correct
20 Correct 5 ms 3576 KB Output is correct
21 Correct 6 ms 3836 KB Output is correct
22 Correct 4 ms 2808 KB Output is correct
23 Correct 5 ms 3320 KB Output is correct
24 Correct 4 ms 2424 KB Output is correct
25 Correct 3 ms 1656 KB Output is correct
26 Correct 3 ms 1912 KB Output is correct
27 Correct 5 ms 3856 KB Output is correct
28 Correct 5 ms 3704 KB Output is correct
29 Correct 5 ms 3576 KB Output is correct
30 Correct 5 ms 3448 KB Output is correct
31 Correct 5 ms 3192 KB Output is correct
32 Correct 5 ms 3576 KB Output is correct
33 Correct 3 ms 2040 KB Output is correct
34 Correct 4 ms 2296 KB Output is correct
35 Correct 5 ms 3704 KB Output is correct
36 Correct 5 ms 3092 KB Output is correct
37 Correct 4 ms 2680 KB Output is correct
38 Correct 5 ms 3064 KB Output is correct
39 Correct 5 ms 3704 KB Output is correct
40 Correct 2 ms 632 KB Output is correct
41 Correct 3 ms 1400 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 8 ms 6264 KB Output is correct
3 Correct 7 ms 6264 KB Output is correct
4 Correct 7 ms 6292 KB Output is correct
5 Correct 7 ms 6264 KB Output is correct
6 Correct 7 ms 6264 KB Output is correct
7 Correct 7 ms 6264 KB Output is correct
8 Correct 7 ms 6264 KB Output is correct
9 Correct 7 ms 6264 KB Output is correct
10 Correct 9 ms 6264 KB Output is correct
11 Correct 8 ms 6264 KB Output is correct
12 Correct 5 ms 3448 KB Output is correct
13 Correct 5 ms 4344 KB Output is correct
14 Correct 6 ms 5240 KB Output is correct
15 Correct 7 ms 6264 KB Output is correct
16 Correct 7 ms 6264 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 508 KB Output is correct
5 Correct 2 ms 632 KB Output is correct
6 Correct 2 ms 760 KB Output is correct
7 Correct 2 ms 760 KB Output is correct
8 Correct 2 ms 760 KB Output is correct
9 Correct 2 ms 632 KB Output is correct
10 Correct 2 ms 508 KB Output is correct
11 Correct 2 ms 760 KB Output is correct
12 Correct 2 ms 760 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 764 KB Output is correct
15 Correct 2 ms 632 KB Output is correct
16 Correct 2 ms 632 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 5 ms 3704 KB Output is correct
19 Correct 5 ms 3064 KB Output is correct
20 Correct 5 ms 3576 KB Output is correct
21 Correct 6 ms 3836 KB Output is correct
22 Correct 4 ms 2808 KB Output is correct
23 Correct 5 ms 3320 KB Output is correct
24 Correct 4 ms 2424 KB Output is correct
25 Correct 3 ms 1656 KB Output is correct
26 Correct 3 ms 1912 KB Output is correct
27 Correct 5 ms 3856 KB Output is correct
28 Correct 5 ms 3704 KB Output is correct
29 Correct 5 ms 3576 KB Output is correct
30 Correct 5 ms 3448 KB Output is correct
31 Correct 5 ms 3192 KB Output is correct
32 Correct 5 ms 3576 KB Output is correct
33 Correct 3 ms 2040 KB Output is correct
34 Correct 4 ms 2296 KB Output is correct
35 Correct 5 ms 3704 KB Output is correct
36 Correct 5 ms 3092 KB Output is correct
37 Correct 4 ms 2680 KB Output is correct
38 Correct 5 ms 3064 KB Output is correct
39 Correct 5 ms 3704 KB Output is correct
40 Correct 2 ms 632 KB Output is correct
41 Correct 3 ms 1400 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 8 ms 6264 KB Output is correct
44 Correct 7 ms 6264 KB Output is correct
45 Correct 7 ms 6292 KB Output is correct
46 Correct 7 ms 6264 KB Output is correct
47 Correct 7 ms 6264 KB Output is correct
48 Correct 7 ms 6264 KB Output is correct
49 Correct 7 ms 6264 KB Output is correct
50 Correct 7 ms 6264 KB Output is correct
51 Correct 9 ms 6264 KB Output is correct
52 Correct 8 ms 6264 KB Output is correct
53 Correct 5 ms 3448 KB Output is correct
54 Correct 5 ms 4344 KB Output is correct
55 Correct 6 ms 5240 KB Output is correct
56 Correct 7 ms 6264 KB Output is correct
57 Correct 7 ms 6264 KB Output is correct
58 Correct 244 ms 98324 KB Output is correct
59 Correct 261 ms 120860 KB Output is correct
60 Correct 263 ms 112664 KB Output is correct
61 Correct 257 ms 109264 KB Output is correct
62 Correct 17 ms 16376 KB Output is correct
63 Correct 26 ms 26232 KB Output is correct
64 Correct 88 ms 74488 KB Output is correct
65 Correct 151 ms 101532 KB Output is correct
66 Correct 254 ms 110712 KB Output is correct
67 Correct 303 ms 105704 KB Output is correct
68 Correct 283 ms 113912 KB Output is correct
69 Correct 269 ms 110200 KB Output is correct
70 Correct 285 ms 117880 KB Output is correct
71 Correct 250 ms 107640 KB Output is correct
72 Correct 24 ms 18040 KB Output is correct
73 Correct 6 ms 4728 KB Output is correct