Submission #1269238

#	Time	Username	Problem	Language	Result	Execution time	Memory
1269238		sashimivssushi	Tracks in the Snow (BOI13_tracks)	C++20	0 / 100	136 ms	440 KiB

tracks

#include <bits/stdc++.h>
#define ll long long
#define sti string
#define vt vector
#define INF ((int) 1e9)
#define MOD 1000000007
#define pii pair<int, int>
#define pil pair<int, ll>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define dbg(x) cerr << #x << " = " << x << '\n';
#define bit(mask, i) ((mask >> i) & 1)
#define fi first
#define sc second
#define MAXXTEST 100
#define MAXN 100000
#define MAXNTEST 100
#define SOTEST 100

using namespace std;

const sti name = "";

inline void stress_test ()
{

}

inline void file ()
{
    freopen((name + ".inp").c_str(), "r", stdin);
    freopen((name + ".out").c_str(), "w", stdout);
}



int main()
{

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);

    int H, W;
    cin >> H >> W;
    unordered_set<char> s;
    char c;
    for (int i = 1; i <= H * W; ++i)
    {
        cin >> c;
        s.insert(c);
    }
    cout << s.size() - 1;









    return 0;
}

• Subtask 1: 0 / 30
• Subtask 2: 0 / 70