Submission #19,246

19246

2025-12-02 18:09:06

cpp17

Accepted 75/75

10ms

2868 KiB

// UUID: 71c1da14-445b-4a19-b65e-c3d8d85ac2cb
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
	ll n;
    cin >> n;
    vector <char> dns(n+1);
    for( ll i = 1; i <= n; i++ ){
        cin >> dns[i];
    }
    vector <ll> a(n+1);
    a[0] = 0;
    for ( ll i = 1; i <= n; i++ ){
        a[i] = a[i-1];
        if ( dns[i] == 'A' ) a[i]++;
    }
    vector <ll> g(n+1);
    g[0] = 0;
    for ( ll i = 1; i <= n; i++ ){
        g[i] = g[i-1];
        if ( dns[i] == 'G' ) g[i] = a[i];
    }
    vector <ll> t(n+1);
    t[0] = 0;
    for ( ll i = 1; i <= n; i++ ){
        t[i] = t[i-1];
        if ( dns[i] == 'T' ) t[i]+= g[i];
    }
    cout << t[n] << "\n";
}

	Sum	Test	Verdict		Time	Memory
base	75/75
		1	Accepted	0/0	1ms	508 KiB
		2	Accepted	0/0	10ms	2612 KiB
		3	Accepted	3/3	1ms	316 KiB
		4	Accepted	4/4	1ms	316 KiB
		5	Accepted	4/4	1ms	316 KiB
		6	Accepted	4/4	1ms	316 KiB
		7	Accepted	4/4	1ms	512 KiB
		8	Accepted	3/3	1ms	316 KiB
		9	Accepted	3/3	1ms	508 KiB
		10	Accepted	4/4	1ms	316 KiB
		11	Accepted	4/4	1ms	316 KiB
		12	Accepted	4/4	1ms	316 KiB
		13	Accepted	4/4	1ms	316 KiB
		14	Accepted	4/4	1ms	372 KiB
		15	Accepted	3/3	9ms	2576 KiB
		16	Accepted	4/4	9ms	2536 KiB
		17	Accepted	4/4	9ms	2616 KiB
		18	Accepted	4/4	9ms	2616 KiB
		19	Accepted	4/4	10ms	2612 KiB
		20	Accepted	4/4	9ms	2868 KiB
		21	Accepted	3/3	10ms	2848 KiB
		22	Accepted	4/4	9ms	2612 KiB