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
#ifndef LOCAL
#pragma GCC optimize("O3")
#endif
#include <bits/stdc++.h>
#define FOR(i,p,k) for(int i=(p);i<=(k);++i)
#define REP(i,n) FOR(i,0,(n)-1)
#define RFOR(i,p,n) for(int i=(p);i>=(n);--i)
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
#define ssize(x) int((x).size())
#define fi first
#define se second
#define V vector
#define pb push_back
#define eb emplace_back
#define C const
#define pn printf("\n")
using namespace std;
typedef long long ll;
typedef __int128_t lll;
typedef V<int> vi;
typedef V<ll> vll;
typedef const int ci;
typedef const ll cll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ll, int> pli;
typedef pair<int, ll> pil;
void chmin(auto &a, auto b){a=min(a,b);}
void chmax(auto &a, auto b){a=max(a,b);}
ci inf = 2.1e9;
cll infll = 4.5e18;
int I(){
    int z;
    scanf("%d", &z);
    //cin >> z;
    return z;
}
ll LL(){
    ll z;
    scanf("%lld", &z);
    //cin >> z;
    return z;
}

int xd(ci d, ci h, ci m){
    return (d*24+h)*60+m;
}

int xdd(ci d, ci h, ci m){
    int ret = xd(d, h, m);
    if(ret >= xd(7, 2, 0)) ret -= 60;
    return ret;
}

void answer(){
    ci x = I();
    ci d = I()-22;
    ci h = I();
    ci m = I();

    ci poc = xdd(d, h, m);
    ci kon = x<5 ? xdd(x+2, 0, 0) : xdd(8, 0, 0);
    ci wyn = kon-poc;
    printf("%d\n", wyn);
}

int main(){
    //cin.tie(0)->sync_with_stdio(0);
    int tt = 1;
    //tt = I();
    while(tt--) answer();
}