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Submission #992687

# Submission time Handle Problem Language Result Execution time Memory
992687 2024-06-05T01:07:46 Z ezzzay Miners (IOI07_miners) C++14
100 / 100
 185 ms 100836 KB 
#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
const int N=1e5+5;
int dp[4][4][4][4][N];
int mp[500];
int fun(int x,int y, int k){
	if(x==0 and y==0)return 1;
	if(x==0){
		if(y==k)return 1;
		return 2;
	}
	if(x==y and x==k)return 1;
	if(x!=y and y!=k and k!=x)return 3;
	return 2;
}
signed main(){
	mp['M'-'A']=1;
	mp['F'-'A']=2;
	mp['B'-'A']=3;
    int n;
    string s;
    cin>>n>>s;
    int h=mp[s[0]-'A'];
    
    for(int i=0;i<n;i++){
    	for(int x1=0;x1<4;x1++){
    		for(int y1=0;y1<4;y1++){
    			for(int x2=0;x2<4;x2++){
    				for(int y2=0;y2<4;y2++){
    					dp[x1][y1][x2][y2][i]=-1e9;
					}
				}
			}
		}
	}
    dp[0][h][0][0][0]=1;
    dp[0][0][0][h][0]=1;
    for(int i=1;i<n;i++){
    	int k=mp[s[i]-'A'];
    	for(int x1=0;x1<4;x1++){
    		for(int y1=0;y1<4;y1++){
    			for(int x2=0;x2<4;x2++){
    				for(int y2=0;y2<4;y2++){
    					int h=fun(x1,y1,k);
    					dp[y1][k][x2][y2][i]=max(dp[y1][k][x2][y2][i],dp[x1][y1][x2][y2][i-1]+h);
    					
    					h=fun(x2,y2,k);
    					dp[x1][y1][y2][k][i]=max(dp[x1][y1][y2][k][i],dp[x1][y1][x2][y2][i-1]+h);
    					
					}
				}
			}
		}
	}
	int mx=0;
	for(int i=0;i<4;i++){
		for(int j=0;j<4;j++){
			for(int k=0;k<4;k++){
				for(int l=0;l<4;l++){
					mx=max(mx,dp[i][j][k][l][n-1]);
				}
			}
		}
	}
	cout<<mx;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 98904 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 98904 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 98904 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 98908 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 98908 KB Output is correct

Subtask #6
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 98904 KB Output is correct

Subtask #7
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 98908 KB Output is correct

Subtask #8
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 98904 KB Output is correct

Subtask #9
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 98904 KB Output is correct

Subtask #10
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 99420 KB Output is correct

Subtask #11
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 100436 KB Output is correct

Subtask #12
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 185 ms 100836 KB Output is correct