Submission #414630

#	Time	Username	Problem	Language	Result	Execution time	Memory
414630		meperdonas203	Miners (IOI07_miners)	C++17	100 / 100	339 ms	254624 KiB

miners

#include <bits/stdc++.h>
using namespace std;
int n;
char remapeo[4]={' ','B','F','M'};
string comida;
int memo[100002][5][5][5][5];
int co(char x){
  if(x=='B')return 1;
  if(x=='F')return 2;
  if(x=='M')return 3;
  return 0;
}
int dif(int a,int b,int c){
  int ans=1;
  if(a!=b and !(a==0 or b==0))ans++;
  if(a!=c and b!=c and !(b==0 or c==0))ans++;
  return ans;
}
int dp(int i,int X1,int X2, int Y1,int Y2){
  if(i==n)return 0;
  if(memo[i][X1][X2][Y1][Y2]==-1){
    memo[i][X1][X2][Y1][Y2]=max(dp(i+1,X2,co(comida[i]),Y1,Y2)+dif(X1,X2,co(comida[i])),dp(i+1,X1,X2,Y2,co(comida[i]))+dif(Y1,Y2,co(comida[i])));
  }
  return memo[i][X1][X2][Y1][Y2];
}
int main() {
  ios_base::sync_with_stdio(0);cin.tie(0);
  cin>>n;
  cin>>comida;
  for(int i=0;i<=n;i++){
    for(int j=0;j<=3;j++){
      for(int k=0;k<=3;k++){
        for(int l=0;l<=3;l++){
          for(int y=0;y<=3;y++){
            memo[i][j][k][l][y]=-1;
          }
        }
      }
    }
  }
  cout<<dp(0,0,0,0,0);
}

• 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