import java.io.*;

public class Validate {

	static final int MAXN = 100;

	private boolean checkString(String s) {
		for (int i = 0; i < s.length(); i++) {
			if ((s.charAt(i) < 'a' || s.charAt(i) > 'z') && (s.charAt(i) < 'A' || s.charAt(i) > 'Z')) {
				return false;
			}
		}
		return true;
	}
	
	public void run() {
		StrictScanner inf = new StrictScanner(System.in);
		int n = inf.nextInt();
		inf.nextLine();
		ensureLimits(n, 1, MAXN, "n");
		int salary;
		String name, country; 
		boolean wasRussia = false;
		int maxSalary = Integer.MIN_VALUE, cntSalary = 0;
		for (int i = 0; i < n; i++) {
			salary = inf.nextInt();
			ensureLimits(salary, 1, 1000000000, "salary");
			name = inf.next();
			ensureLimits(name.length(), 1, 20, "name size");
			ensure(checkString(name), "letters in name");
			country = inf.next();
			ensureLimits(country.length(), 1, 20, "country size");
			ensure(checkString(country), "letters in country");
			if (country.equals("Russia")) {
				if (salary == maxSalary) {
					cntSalary++;
				}
				if (salary > maxSalary) {
					maxSalary = salary;
					cntSalary = 1;
				}
			}
			wasRussia |= country.equals("Russia");
			inf.nextLine();
		}
		ensureLimits(cntSalary, 1, 1, "Count of max salary");
		ensure(wasRussia, "No Russian player in input file");
		inf.close();
	}

	public static void main(String[] args) {
		new Validate().run();
	}

	public class StrictScanner {
		private final BufferedReader in;
		private String line = "";
		private int pos;
		private int lineNo;

		public StrictScanner(InputStream source) {
			in = new BufferedReader(new InputStreamReader(source));
			nextLine();
		}

		public void close() {
			ensure(line == null, "Extra data at the end of file");
			try {
				in.close();
			} catch (IOException e) {
				throw new AssertionError("Failed to close with " + e);
			}
		}

		public void nextLine() {
			ensure(line != null, "EOF");
			ensure(pos == line.length(), "Extra characters on line " + lineNo);
			try {
				line = in.readLine();
			} catch (IOException e) {
				throw new AssertionError("Failed to read line with " + e);
			}
			pos = 0;
			lineNo++;
		}

		public String next() {
			ensure(line != null, "EOF");
			ensure(line.length() > 0, "Empty line " + lineNo);
			if (pos == 0)
				ensure(line.charAt(0) > ' ', "Line " + lineNo
						+ " starts with whitespace");
			else {
				ensure(pos < line.length(), "Line " + lineNo + " is over");
				ensure(line.charAt(pos) == ' ', "Wrong whitespace on line "
						+ lineNo);
				pos++;
				ensure(pos < line.length(), "Line " + lineNo + " is over");
				ensure(line.charAt(0) > ' ', "Line " + lineNo
						+ " has double whitespace");
			}
			StringBuilder sb = new StringBuilder();
			while (pos < line.length() && line.charAt(pos) > ' ')
				sb.append(line.charAt(pos++));
			return sb.toString();
		}

		public int nextInt() {
			String s = next();
			ensure(s.length() == 1 || s.charAt(0) != '0',
					"Extra leading zero in number " + s + " on line " + lineNo);
			ensure(s.charAt(0) != '+', "Extra leading '+' in number " + s
					+ " on line " + lineNo);
			try {
				return Integer.parseInt(s);
			} catch (NumberFormatException e) {
				throw new AssertionError("Malformed number " + s + " on line "
						+ lineNo);
			}
		}

		public long nextLong() {
			String s = next();
			ensure(s.length() == 1 || s.charAt(0) != '0',
					"Extra leading zero in number " + s + " on line " + lineNo);
			ensure(s.charAt(0) != '+', "Extra leading '+' in number " + s
					+ " on line " + lineNo);
			try {
				return Long.parseLong(s);
			} catch (NumberFormatException e) {
				throw new AssertionError("Malformed number " + s + " on line "
						+ lineNo);
			}
		}

		public double nextDouble() {
			String s = next();
			ensure(s.length() == 1 || s.startsWith("0.") || s.charAt(0) != '0',
					"Extra leading zero in number " + s + " on line " + lineNo);
			ensure(s.charAt(0) != '+', "Extra leading '+' in number " + s
					+ " on line " + lineNo);
			try {
				return Double.parseDouble(s);
			} catch (NumberFormatException e) {
				throw new AssertionError("Malformed number " + s + " on line "
						+ lineNo);
			}
		}
	}

	void ensure(boolean b, String message) {
		if (!b) {
			throw new AssertionError(message);
		}
	}

	void ensureLimits(int n, int from, int to, String name) {
		ensure(from <= n && n <= to, name + " must be from " + from + " to "
				+ to);
	}

	void ensureLimitsLong(long n, long from, long to, String name) {
		ensure(from <= n && n <= to, name + " must be from " + from + " to "
				+ to);
	}

}