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#include<bits/stdc++.h> | |
using namespace std; | |
const long long inf = (long long) 1e18 + 10; | |
const int inf1 = (int) 1e9 + 10; | |
#define int long long | |
#define dbl long double | |
#define endl '\n' | |
#define sc second | |
#define fr first | |
#define mp make_pair | |
#define pb push_back | |
#define all(x) x.begin(), x.end() | |
const int maxn = 1e5; | |
void solve() { | |
string a, b, c; | |
cin >> a >> b >> c; | |
if(a != b && a != c && b != c) { | |
cout << "S" << endl; | |
} | |
else { | |
cout << "N" << endl; | |
} | |
} | |
int32_t main() { | |
ios::sync_with_stdio(false); cin.tie(0); | |
// freopen("in.in", "r", stdin); | |
// freopen("out.out", "w", stdout); | |
int tt = 1; | |
// cin >> tt; | |
while(tt--) { | |
solve(); | |
} | |
} |
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