Submission #406444

#	Time	Username	Problem	Language	Result	Execution time	Memory
406444		Lobo	Miners (IOI07_miners)	C++17	100 / 100	213 ms	1092 KiB

miners

#include <bits/stdc++.h>
 
using namespace std;

const long long INFll = 1e18;
const int INFii = 1e9;
const long long mod = (long long) 1e9 + 7;
typedef long long ll;
typedef int ii;
typedef double dbl;
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back

#define maxn 110000
//LEMBRAR DE MUDAR

ii n, s[maxn];
string S;
ii dp[2][4][4][4][4];

int main() {
    ios::sync_with_stdio(false); cin.tie(0);

    //freopen("in.in", "r", stdin);
    //freopen("__.out", "w", stdout);

    cin >> n;
    cin >> S;

    for(ii i = 0; i < n; i++) {
        if(S[i] == 'M') s[i] = 1;
        if(S[i] == 'F') s[i] = 2;
        if(S[i] == 'B') s[i] = 3;
    }

    for(ii i = n-1; i >= 0; i--) {
        for(ii a1 = 0; a1 < 4; a1++)
        for(ii a2 = 0; a2 < 4; a2++) 
        for(ii b1 = 0; b1 < 4; b1++) 
        for(ii b2 = 0; b2 < 4; b2++) {

            

            ii p1 = 3;
            if(a1 == 0 || a1 == a2 || a1 == s[i]) p1--;
            if(a2 == 0 || a2 == s[i]) p1--;

            ii p2 = 3;
            if(b1 == 0 || b1 == b2 || b1 == s[i]) p2--;
            if(b2 == 0 || b2 == s[i]) p2--;

            //cout << p1 << " " << p2 << endl;
            if(i != n-1)
                dp[i%2][a1][a2][b1][b2] = max(p1 + dp[(i+1)%2][s[i]][a1][b1][b2], p2 + dp[(i+1)%2][a1][a2][s[i]][b1]);
            else {
                dp[i%2][a1][a2][b1][b2] = max(p1,p2);
                //cout << p1 << " " << p2 << endl;
            }
        
        }

    }

    cout << dp[0][0][0][0][0]<< endl;

}

• 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