Submission #1022765

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1022765	2024-07-14 04:54:17	nmts	Linear Garden (IOI08_linear_garden)	C++17	95 / 100	169 ms	65536 KiB

linear_garden

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#include <bits/stdc++.h>
#define file(name) freopen(name".inp" , " r " , stdin);freopen(name".out" , " w " , stdout)
#define faster    ios_base :: sync_with_stdio(false) ; cin.tie(0) ; cout.tie(0) ;
#define dp(i , mi , ma) dp[i][mi + 2][ma]
using namespace std;
int n , m;
string s;
int dp[1000000][3][3];
void solve()
{
    cin >> n >> m >> s;  
     for (int mi = -2; mi <= 0; ++mi)
        for (int ma = 0; ma <= 2; ++ma)
            dp(n + 1, mi, ma) = 1;
    for (int i = n; i >= 1; --i) {
        for (int mi = -2; mi <= 0; ++mi) {
            for (int ma = 0; ma <= 2; ++ma) {
                if (mi > -2) dp(i, mi, ma) += dp(i + 1, mi - 1, max(0, ma - 1));
                if (ma < 2) dp(i, mi, ma) += dp(i + 1, min(0, mi + 1), ma + 1);
                dp(i, mi, ma) %= m;
 
 
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