// Days (A), by Errichto
#include<bits/stdc++.h>
using namespace std;

int t[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

int main() {
	int x;
	scanf("%d", &x);
	char sl[15];
	scanf("%s", sl);
	scanf("%s", sl);
	if(sl[0] == 'w') {
	    int current = 5;
	    int ans = 0;
	    for(int i = 0; i < 366; ++i) {
	        if(current == x) ++ans;
	        ++current;
	        if(current > 7) current = 1;
	    }
	    printf("%d\n", ans);
		return 0;
	}
	int c = 0;
	for(int i = 0; i < 12; ++i) c += x <= t[i];
	printf("%d\n", c);
	return 0;
}