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#include<bits/stdc++.h>
using namespace std;
using vi = vector<int>;
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
void part1() {
string s;
int sum = 0;
while(cin >> s) {
vector<bool> vis(54, 0);
string l = s.substr(0, s.size() / 2);
string r = s.substr(s.size() / 2, s.size());
for (int i = 0; i < s.size() / 2; i++) {
if (count(all(r), l[i])) {
if (isupper(l[i]) && !vis[l[i] - 'A' + 27]) {
sum += l[i] - 'A' + 27;
vis[l[i] - 'A' + 27] = 1;
} else if (islower(l[i]) && !vis[l[i]- 'a' + 1]) {
sum += l[i] - 'a' + 1;
vis[l[i] - 'a' + 1] = 1;
}
}
}
}
cout << sum << '\n';
}
void getFrqThreeAndSum(string s, int &sum) {
vi fq(54, 0);
for (auto x : s) {
if(isupper(x)) {
fq[x - 'A' + 27]++;
} else {
fq[x - 'a' + 1]++;
}
}
for (int i = 0; i < fq.size(); i++) {
if (fq[i] == 3) {
sum += i;
}
}
}
void part2() {
string s;
int sum = 0;
vector<string> v;
while(cin >> s) {
sort(all(s));
auto res = unique(all(s));
v.push_back(string(s.begin(), res));
}
string tmp = "";
int cnt = 1;
for (int i = 0; i < v.size(); i+=3) {
tmp = v[i] + v[i + 1] + v[i + 2];
getFrqThreeAndSum(tmp, sum);
}
cout << sum << '\n';
}
int main () {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
// part1();
part2();
}
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