Submission #995838

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
995838	2024-06-10 00:24:03	biank	Linear Garden (IOI08_linear_garden)	C++14	100 / 100	899 ms	2552 KiB

linear_garden

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#include <bits/stdc++.h>
using namespace std;
int prev_dp[5][5][3][2];
int curr_dp[5][5][3][2];
int n, m;
string g;
int getVal(int curr_diff, int min_diff, int max_diff, bool tight) {
    if (curr_diff < 0 || curr_diff >= 5) return 0;
    if (max_diff - min_diff >= 3) return 0;
    return prev_dp[curr_diff][min_diff][max_diff - min_diff][tight];
}
void compute(int pos, int curr_diff, int min_diff, int max_diff, bool tight) {
    int &res = curr_dp[curr_diff][min_diff][max_diff - min_diff][tight];
    res = getVal(curr_diff + 1, min_diff, max(max_diff, curr_diff + 1), tight && g[pos] == 'L');
    if (!tight || g[pos] == 'P') {
        res += getVal(curr_diff - 1, min(min_diff, curr_diff - 1), max_diff, tight && g[pos] == 'P');
        if (res >= m) res -= m;
    }
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    cin >> n >> m >> g;
    for (int curr_diff = 0; curr_diff < 5; curr_diff++) {
 
 
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