Submission #2157591


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#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()
#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
//---------------------------------------------------------------------------------------------------
/*---------------------------------------------------------------------------------------------------
            ∧_∧  
      ∧_∧  (´<_` )  Welcome to My Coding Space!
     ( ´_ゝ`) /  ⌒i     
    /   \     | |     
    /   / ̄ ̄ ̄ ̄/  |  
  __(__ニつ/     _/ .| .|____  
     \/____/ (u ⊃  
---------------------------------------------------------------------------------------------------*/








int N; string S[101010];
map<char, ll> m;
string march = "MARCH";
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> N;
    rep(i, 0, N) cin >> S[i];
    rep(i, 0, N) m[S[i][0]]++;

    ll ans = 0;
    rep(a, 0, 5) rep(b, a + 1, 5) rep(c, b + 1, 5) ans += m[march[a]] * m[march[b]] * m[march[c]];
    cout << ans << endl;
}

Submission Info

Submission Time
Task C - March
User hamayanhamayan
Language C++14 (GCC 5.4.1)
Score 300
Code Size 1668 Byte
Status AC
Exec Time 19 ms
Memory 5760 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 300 / 300
Status
AC × 3
AC × 13
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, sample_01.txt, sample_02.txt, sample_03.txt
Case Name Status Exec Time Memory
01.txt AC 18 ms 5760 KB
02.txt AC 19 ms 5760 KB
03.txt AC 17 ms 5760 KB
04.txt AC 5 ms 1920 KB
05.txt AC 18 ms 5632 KB
06.txt AC 11 ms 3584 KB
07.txt AC 12 ms 4224 KB
08.txt AC 9 ms 3200 KB
09.txt AC 1 ms 1024 KB
10.txt AC 2 ms 1024 KB
sample_01.txt AC 1 ms 1024 KB
sample_02.txt AC 2 ms 1024 KB
sample_03.txt AC 2 ms 1024 KB