Submission #1540290


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#include <bits/stdc++.h>

#define FOR(i,b,e) for(int i=(b); i <= (e); ++i)
#define FORD(i,b,e) for(int i=(b); i >= (e); --i)
#define REP(i,n) for(int i=0; i < (n); ++i)
#define SIZE(c) (int) (c).size()
#define ALL(c) (c).begin(), (c).end()
#define PB push_back
#define MP make_pair
#define ST first
#define ND second
#define FWD(i,a,b) for (int i=(a); i<(b); ++i)
#define BCK(i,a,b) for (int i=(a); i>(b); --i)
#define PI 3.14159265358979311600
#define pb push_back
#define mp make_pair
#define st first
#define nd second

using namespace std;

typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

typedef vector < int > VI;
typedef vector<ll> VL;

typedef long double K;

const int N = 200005;

int n, a[N], b[N];
char s[N];
map<char,int> cnt;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	cin >> s;
	n = strlen(s);

	REP(i, n) ++cnt[s[i]];

	ll total = 1 + 1LL*n*(n+1)/2;

	for (auto& item : cnt) {
		ll c = item.second;
		total -= c*(c+1)/2;
	}

	cout << total << '\n';

	return 0;
}

Submission Info

Submission Time
Task B - Reverse and Compare
User nobik
Language C++14 (GCC 5.4.1)
Score 500
Code Size 1085 Byte
Status
Exec Time 6 ms
Memory 512 KB

Judge Result

Set Name Score / Max Score Test Cases
Sample 0 / 0 sample_01.txt, sample_02.txt, sample_03.txt
All 500 / 500 sample_01.txt, sample_02.txt, sample_03.txt, sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_16.txt, subtask_1_17.txt
Case Name Status Exec Time Memory
sample_01.txt 1 ms 256 KB
sample_02.txt 1 ms 256 KB
sample_03.txt 1 ms 256 KB
subtask_1_01.txt 1 ms 256 KB
subtask_1_02.txt 2 ms 512 KB
subtask_1_03.txt 1 ms 256 KB
subtask_1_04.txt 1 ms 256 KB
subtask_1_05.txt 1 ms 256 KB
subtask_1_06.txt 1 ms 256 KB
subtask_1_07.txt 2 ms 256 KB
subtask_1_08.txt 6 ms 512 KB
subtask_1_09.txt 3 ms 512 KB
subtask_1_10.txt 3 ms 512 KB
subtask_1_11.txt 6 ms 512 KB
subtask_1_12.txt 3 ms 512 KB
subtask_1_13.txt 3 ms 512 KB
subtask_1_14.txt 2 ms 512 KB
subtask_1_15.txt 2 ms 512 KB
subtask_1_16.txt 2 ms 512 KB
subtask_1_17.txt 2 ms 512 KB