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#include <bits/stdc++.h>
    using namespace std;
    #define ll long long
    #define st first
    #define nd second
    #define pii pair<int,int>
    #define pb push_back
    #define pp pop_back
    #define si size
    #define int ll
    #define V vector
;
#define cerr if(0) cerr

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int k,d,m,g,sum;
    cin>>k>>d>>g>>m;
    sum=(24-g-1-(k==5&&(g<3||d<29)))*60+60-m;
    cout<<sum+(23+k-d+(k==5))*60*24<<'\n';
    return 0; 
}