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Submission #707779

# Submission time Handle Problem Language Result Execution time Memory
707779 2023-03-10T06:07:08 Z TAhmed33 Miners (IOI07_miners) C++
100 / 100
 1068 ms 147052 KB 
#include <bits/stdc++.h>
using namespace std;
int n;
vector <int> adds;
int dp[100001][4][4][4][4];
int ans (int pos, int a, int b, int c, int d) {
	int &ret = dp[pos][a][b][c][d];
	if (ret != -1) return ret;
	if (pos == n) {
		return ret = 0;
	}
	map <int, int> distinct;
	if (a != 0) distinct[a]++;
	if (b != 0) distinct[b]++;
	distinct[adds[pos]]++;
	int x = ans(pos + 1, b, adds[pos], c, d) + (int)distinct.size();
	map <int, int> distinct2;
	if (c != 0) distinct2[c]++;
	if (d != 0) distinct2[d]++;
	distinct2[adds[pos]]++;
	x = max(x, ans(pos + 1, a, b, d, adds[pos]) + (int)distinct2.size());
	return ret = x;
}
int main () {
	memset(dp, -1, sizeof(dp));
	string s;
	cin >> n >> s;
	for (auto i : s) {
		if (i == 'M') adds.push_back(1);
		else if (i == 'F') adds.push_back(2);
		else adds.push_back(3);
	}
	cout << ans(0, 0, 0, 0, 0);
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 100428 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 100408 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 100448 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 100436 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 100388 KB Output is correct

Subtask #6
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 100380 KB Output is correct

Subtask #7
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 100812 KB Output is correct

Subtask #8
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 102424 KB Output is correct

Subtask #9
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 134 ms 105176 KB Output is correct

Subtask #10
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 237 ms 111360 KB Output is correct

Subtask #11
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 418 ms 129788 KB Output is correct

Subtask #12
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1068 ms 147052 KB Output is correct