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Submission #644278

# Submission time Handle Problem Language Result Execution time Memory
644278 2022-09-24T10:33:11 Z randomRandom Miners (IOI07_miners) C++14
100 / 100
 357 ms 1004 KB 
#include <iostream>

using namespace std;

const int MAXN = 1e5+7;

int A[MAXN];

int DP[2][4][4][4][4];

int check(int a, int b, int c){
    int result = 0;
    for(int i = 1; i <= 3; i++){
        if(a == i || b == i || c == i){
            result++;
        }
    }
    return result;
}


int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    string ciag;
    cin >> n;
    cin >> ciag;
    for(int i = 0; i < n; i++){
        if(ciag[i] == 'M'){
            A[i+1] = 1;
        }else if(ciag[i] == 'F'){
            A[i+1] = 2;
        }else{
            A[i+1] = 3;
        }
    }
    int obecny = 0;
    int drugi = 1;
    for(int i = n; i >= 0; i--){
        for(int a = 0; a <= 3; a++){
            for(int b = 0; b <= 3; b++){
                for(int c = 0; c<=3; c++){
                    for(int d = 0; d <= 3; d++){ 
                        DP[obecny][a][b][c][d] = max(DP[drugi][b][A[i]][c][d] + check(a, b, A[i]), DP[drugi][a][b][d][A[i]] + check(c, d, A[i]));
                    }
                }
            }
        }
        swap(obecny, drugi);
    }
    cout << DP[obecny][0][0][0][0];
    return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct

Subtask #6
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct

Subtask #7
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 212 KB Output is correct

Subtask #8
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 340 KB Output is correct

Subtask #9
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 332 KB Output is correct

Subtask #10
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 468 KB Output is correct

Subtask #11
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 235 ms 868 KB Output is correct

Subtask #12
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 357 ms 1004 KB Output is correct