1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
#include <bits/stdc++.h>
using namespace std;
#define fwd(i, a, n) for (int i = (a); i < (n); i++)
#define rep(i, n)    fwd(i, 0, n)
#define all(X)       X.begin(), X.end()
#define sz(X)        int(size(X))
#define pb           push_back
#define eb           emplace_back
#define st           first
#define nd           second
using pii = pair<int, int>;
using vi = vector<int>;
using ll = long long;
using ld = long double;
#ifdef LOC
auto SS = signal(6, [](int) {
	*(int *)0 = 0;
});
#	define DTP(x, y)                                      \
		auto operator<<(auto &o, auto a)->decltype(y, o) { \
			o << "(";                                      \
			x;                                             \
			return o << ")";                               \
		}
DTP(o << a.st << ", " << a.nd, a.nd);
DTP(for (auto i : a) o << i << ", ", all(a));
void dump(auto... x) {
	((cerr << x << ", "), ...) << '\n';
}
#	define deb(x...) cerr << setw(4) << __LINE__ << ":[" #x "]: ", dump(x)
#else
#	define deb(...) 0
#endif

int day_to_min() {
	return 24 * 60;
}

int sod_to_min(int d) {
	return d * day_to_min();
}

int round_start_day(int r) {
	return r + 22;
}

int round_start_min(int r) {
	return sod_to_min(round_start_day(r)) + day_to_min() / 2;
}

int round_end_min(int r) {
	if (r == 5) {
		return sod_to_min(round_start_day(r + 3)) - 60;
	}
	return sod_to_min(round_start_day(r + 2));
}

int flip_min() {
	return sod_to_min(29) + 2 * 60;
}

int32_t main() {
	cin.tie(0)->sync_with_stdio(0);
	int r, d, h, m;
	cin >> r >> d >> h >> m;
	int cur_min = sod_to_min(d) + h * 60 + m;
	cout << round_end_min(r) - cur_min - (cur_min < flip_min() ? 0 : -60)
		 << '\n';
#ifdef LOCF
	cout.flush();
	cerr << "- - - - - - - - -\n";
	(void)!system(
		"grep VmPeak /proc/$PPID/status | sed s/....kB/\' MB\'/1 >&2"); // 4x.kB
																		// ....kB
#endif
}