CPP/A_Cinema_Line.cpp at main · DEmmaRL/CPP · GitHub

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#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define f first
#define s second

//typedef
typedef long long int lli ;

//fore
#define fore(i, a, b) for(int i = (a); i <= (b); ++i)


//ESTRUCTURAS
#define pii pair<int, int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vll vector<long long>
#define mii map<int, int>
#define mp make_pair

//ABREVIATURAS
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define clr(x) memset(x, 0, sizeof(x))
#define sortall(x) sort(all(x))

#define CODED_BY_DEMMARL ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);


//FUNCIONES
lli gcd(lli a,lli b) { if (b==0) return a; return gcd(b, a%b); }
lli lcm(lli a,lli b) { return a/gcd(a,b)*b; }
string to_upper(string a) { for (int i=0;i<(int)a.size();++i) if (a[i]>='a' && a[i]<='z') a[i]-='a'-'A'; return a; }
string to_lower(string a) { for (int i=0;i<(int)a.size();++i) if (a[i]>='A' && a[i]<='Z') a[i]+='a'-'A'; return a; }
bool prime(lli a) { if (a==1) return 0; for (int i=2;i<=round(sqrt(a));++i) if (a%i==0) return 0; return 1; }
void yes() { cout<<"YES\n"; }
void no() { cout<<"NO\n"; }


// g++ main.cpp -o a && ./a < in > out


void solve() {
    int n;
    cin>>n;
    int a = 0 , b = 0 , c = 0 ;

    bool res = true ;

    for(int i=0; i<n; ++i)
    {
        int tmp;
        cin>>tmp;

        if(tmp != 25)
        {
            if(tmp ==  50)
            {
                if(a)
                {
                    a--;
                    b++;
                }
                else
                {
                    res = false;
                    break;
                }
            }
            else
            {
                if(b)
                {
                    tmp-=50;
                    b--;
                }
                if( tmp == 50 )
                {
                    if(a)
                    {
                        a--;
                    }
                    else
                    {
                        res = false ;
                        break;
                    }
                }
                else
                {
                    if(a >= 3 )
                    {
                        a-=3;
                    }
                    else
                    {
                        res = false;
                        break;
                    }
                }
            }
        }
        else
        {
            a++;
        }
    }

    if(res)
        yes();
    else
        no();


}


int main()
{
    CODED_BY_DEMMARL;

    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);

    int tc = 1;
     //cin >> tc;
    for (int t = 1; t <= tc; t++) {
        // cout << "Case #" << t << ": ";
        solve();
    }

}