Submission #377130

#	Time	Username	Problem	Language	Result	Execution time	Memory
377130		kevinxiehk	Miners (IOI07_miners)	C++17	100 / 100	54 ms	620 KiB

miners

#include <bits/stdc++.h>
#define mp make_pair
#define pb emplace_back
#define fi first
#define se second
#define ick cout<<"ickbmi32.9\n"
using namespace std;
int val(int a,int b){
    if(a==9)return 1;
    if(a/3==b&&a%3==b)return 1;
    if(a/3==a%3||a/3==b||a%3==b)return 2;
    return 3;
}
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    unordered_map<char,int>dis;
    dis['M']=0;dis['F']=1;dis['B']=2;
    int n;cin>>n;
    int dp[2][10][10];
    memset(dp,0,sizeof dp);
    string s;cin>>s;
    for(int i=n-1;i>=0;i--){
        int t=i%2,b=dis[s[i]];
        for(int j=0;j<10;j++){
            for(int k=0;k<10;k++){
                int n1,n2;
                if(j==9)n1=b*4;
                else n1=(j%3)*3+b;
                if(k==9)n2=b*4;
                else n2=(k%3)*3+b;
                dp[t][j][k]=max(dp[t^1][n1][k]+val(j,b),dp[t^1][j][n2]+val(k,b));
            }
        }
    }
    cout<<dp[0][9][9]<<'\n';
    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 7 / 7
• Subtask 7: 8 / 8
• Subtask 8: 8 / 8
• Subtask 9: 8 / 8
• Subtask 10: 8 / 8
• Subtask 11: 8 / 8
• Subtask 12: 8 / 8