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#ifndef UNCLE
 #pragma GCC optimize("O3,unroll-loops")
#endif

#include <bits/stdc++.h>
using namespace std;

#define FOR(i,p,q) for(int i=(p); i<=(q); ++i)
#define ROF(i,p,q) for(int i=(p); i>=(q); --i)
#define REP(i,q) for(int i=0; i<(q); ++i)
#define pb push_back
#define as assign
#define rz resize
#define Co const
#define al(X) X.begin(), X.end()
#define ral(X) X.rbegin(), X.rend()
#define sz(X) (int)((X).size())
#define ckmx(a,b) a=max(a,b)
#define ckmn(a,b) a=min(a,b)
#define V vector
typedef long long ll;
typedef long double ld;
typedef mt19937_64 mt;
#ifndef UNCLE
 typedef basic_string<bool> vb;
 typedef basic_string<int> vi;
 typedef basic_string<ll> vl;
#else
 typedef V<bool> vb;
 typedef V<int> vi;
 typedef V<ll> vl;
#endif

constexpr ll INFl=(ll)1e18+14;
constexpr int INFi=1e9+14, MX_N=5e5+14;

int N,M,Q;
void Inpt(){
    int r,d,g,m;
    cin>>r>>d>>g>>m;
    d=d-22-r;
    if(r==5){
        ll rs=60*(24*(3-d)-g)-m;
        if(d!=2||g<2) rs-=60;
        cout<<rs<<"\n";
    }else{
        ll rs=60*(24*(2-d)-g)-m;
        cout<<rs<<"\n";
    }

}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);

    Inpt();
}