oj.uz

Submission #138145

# Submission time Handle Problem Language Result Execution time Memory
138145 2019-07-29T12:32:58 Z Bodo171 Lamps (JOI19_lamps) C++14
0 / 100
 2 ms 376 KB 
#include <iostream>
#include <fstream>
using namespace std;
int dp[2][10];
int cst,i,j,k,n,use,x,y,ans;
string a,b;
bool valid(int x,int y,int mov)
{
    if(mov/3)
    {
        mov-=3;
        if(mov)return ((mov-1)^y);
        return (x^y);
    }
    return ((mov%3)-1==y);
}
int main()
{
    //freopen("data.in","r",stdin);
    ios_base::sync_with_stdio(false);
    cin>>n;
    cin>>a>>b;
    for(i=1;i<6;i++)
        dp[0][i]=(1<<30);
    for(i=0;i<n;i++)
    {
        use=1-use;
        x=a[i]-'0';y=b[i]-'0';
        for(j=0;j<6;j++)
            dp[use][j]=(1<<30);
        for(j=0;j<6;j++)
            if(valid(x,y,j))
             for(k=0;k<6;k++)
        {
            cst=(((j%3)!=(k%3)&&(j%3!=0))+((j/3)>(k/3)));
            dp[use][j]=min(dp[use][j],dp[1-use][k]+cst);
        }
    }
    ans=(1<<30);
    for(j=0;j<6;j++)
        ans=min(ans,dp[use][j]);
    cout<<ans;
    return 0;
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -