Submission #890769

#	Time	Username	Problem	Language	Result	Execution time	Memory
890769		Sir_Ahmed_Imran	Miners (IOI07_miners)	C++17	45 / 100	1559 ms	860 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 all(x) (x).begin(),(x).end()
int pwr[20];
void solve(){
    string a;
    int n,m,o,p,q,r;
    cin>>n>>a;
    for(int i=pwr[0]=1;i<20;i++)
        pwr[i]=pwr[i-1]*2;
    set<char> s;
    for(int i=o=0;i<pwr[n-1];i++){
        vector<char> x,y;
        x.append(a[0]);
        for(int j=r=1;j<n;j++){
            if(i&pwr[j-1]){
                m=x.size();
                x.append(a[j]);
                for(int k=m;k>=max(m-2,0);k--)
                    s.insert(x[k]);
                r+=s.size();
                s.clear();
            }
            else{
                m=y.size();
                y.append(a[j]);
                for(int k=m;k>=max(m-2,0);k--)
                    s.insert(y[k]);
                r+=s.size();
                s.clear();
            }
        }
        o=max(o,r);
    }
    cout<<o;
}
int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    solve();
    return 0;
}

Compilation message (stderr)

miners.cpp: In function 'void solve()':
miners.cpp:13:15: warning: unused variable 'p' [-Wunused-variable]
   13 |     int n,m,o,p,q,r;
      |               ^
miners.cpp:13:17: warning: unused variable 'q' [-Wunused-variable]
   13 |     int n,m,o,p,q,r;
      |                 ^

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 0 / 7
• Subtask 7: 0 / 8
• Subtask 8: 0 / 8
• Subtask 9: 0 / 8
• Subtask 10: 0 / 8
• Subtask 11: 0 / 8
• Subtask 12: 0 / 8