// #pragma GCC optimize("O3,unroll-loops")
#include <bits/stdc++.h>
// #include <x86intrin.h>
using namespace std;
#if __cplusplus >= 202002L
using namespace numbers;
#endif



int main(){
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(ios::badbit | ios::failbit);
	int n, x, y;
	cin >> n >> x >> y;
	vector<array<long long, 2>> cnt(x + y);
	for(auto i = 0; i < n; ++ i){
		int size;
		char c;
		cin >> size >> c;
		cnt[i % (x + y)][c - 'A'] += size;
	}
	ranges::sort(cnt, [&](auto x, auto y){ return x[0] - x[1] > y[0] - y[1]; });
	long long res = 0;
	for(auto i = 0; i < x + y; ++ i){
		res += cnt[i][i >= x];
	}
	cout << res << "\n";
	return 0;
}

/*

*/