Submission #890926

#	Time	Username	Problem	Language	Result	Execution time	Memory
890926		Sir_Ahmed_Imran	Miners (IOI07_miners)	C++17	100 / 100	969 ms	596 KiB

miners

                              ///~~~LOTA~~~///
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
#define ff first
#define ss second
#define ll long long 
#define append push_back
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()
set<int> x;
inline int c(int& n,int& m,int& o){
    if(n) x.insert(n);
    if(m) x.insert(m);
    if(o) x.insert(o);
    int z=x.size();
    x.clear();
    return z;
}
void solve(){
    char s;
    int n,m,o,p,q,r;
    cin>>n;
    map<pair<pii,pii>,int> dp,dp2;
    dp[{{0,0},{0,0}}]=0;
    for(int i=0;i<n;i++){
        cin>>s;
        if(s=='M') m=1;
        if(s=='F') m=2;
        if(s=='B') m=3;
        for(auto& i:dp){
            o=i.ff.ff.ff;
            p=i.ff.ff.ss;
            q=i.ff.ss.ff;
            r=i.ff.ss.ss;
            dp2[{{p,m},{q,r}}]=max(dp2[{{p,m},{q,r}}]
            ,i.ss+c(o,p,m));
            dp2[{{o,p},{r,m}}]=max(dp2[{{o,p},{r,m}}]
            ,i.ss+c(q,r,m));
        }
        swap(dp,dp2);
        dp2.clear();
    }
    o=0;
    for(auto& i:dp)
        o=max(o,i.ss);
    cout<<o;
}
int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    solve();
    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