Submission #769984

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
769984	2023-06-30 15:42:39	raysh07	스탬프 수집 (JOI16_ho_t2)	C++17	100 / 100	9 ms	8372 KiB

2016_ho_t2

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#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF (int)1e18
#define f first
#define s second
mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());
void Solve() 
{
    int n; cin >> n;
    string s; cin >> s;
    vector <int> a(n + 1);
    for (int i = 1; i <= n; i++){
        if (s[i - 1] == 'J') a[i] = 1;
        else if (s[i - 1] == 'O') a[i] = 2;
        else a[i] = 3;
    }
    
    vector<vector<int>> dp(n + 1, vector<int>(4, 0));
    dp[0][0] = 1;
    for (int i = 1; i <= n; i++){
        for (int j = 0; j <= 3; j++){
            dp[i][j] += dp[i - 1][j];
            if (a[i] == j + 1) dp[i][j + 1] += dp[i - 1][j];
        }
    }
    
    int add = dp[n][3];
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 20 / 20
• Subtask 3: 50 / 50