#include <iostream>
#include <string>

using namespace std;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
		int a, b, Q;
		std::string text;
		getline(std::cin, text);
		std::cin >> Q;
		bool* invert = new bool[text.length()];
		for (int i = 0; i < text.length(); i++) {
			invert[i] = true;
		}

		for (int i = 0; i < Q; i++) {
			std::cin >> a >> b;
			for (int j = a - 1; j < b; j++) {
				invert[j] = !invert[j];

			}
		}

		for (int i = 0; i < text.length();i++) {
			if (!invert[i]) {
				if (isupper(text[i])) {
				text[i] = tolower(text[i]);
					}
				else {
					text[i] = toupper(text[i]);
					}
			}

		}

		std::cout << text;
		return 0;
}