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Submission #798151

# Submission time Handle Problem Language Result Execution time Memory
798151 2023-07-30T12:00:39 Z Liudas Miners (IOI07_miners) C++17
100 / 100
 179 ms 1000 KB 
#include <bits/stdc++.h>

using namespace std;
int dp[2][4][4][4][4];
int f(int a, int b, int c){
    return (a == 1 || b == 1 || c == 1) + (a == 2 || b == 2 || c == 2) + (a == 3 || b == 3 || c == 3);
}
int main()
{
    int N;
    cin >> N;
    string s;
    cin >> s;
    vector<int> v(N);
    for(int i = 0; i < N ; i++){
        v[i] = (s.substr(i, 1) == "M" ? 1 : (s.substr(i, 1) == "F" ? 2 : 3));
    }
    int x = 1, l = 0;
    for(int i = N-1; i >= 0; i --){
        for(int a = 0; a < 4; a ++){
            for(int b = 0; b < 4; b ++){
                for(int c = 0; c < 4; c ++){
                    for(int d = 0; d < 4; d ++){
                        int e = v[i];
                        dp[x][a][b][c][d] = max(dp[l][b][e][c][d] + f(a,b,e), dp[l][a][b][d][e] + f(c,d,e));
                    }
                }
            }
        }
        x ^= 1;
        l ^= 1;
    }
    cout << dp[l][0][0][0][0] << endl;
    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 1 ms 212 KB Output is correct

Subtask #4
9.0 / 9.0

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

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 2 ms 212 KB Output is correct

Subtask #8
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 308 KB Output is correct

Subtask #9
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 340 KB Output is correct

Subtask #10
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 460 KB Output is correct

Subtask #11
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 864 KB Output is correct

Subtask #12
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 179 ms 1000 KB Output is correct