UVa – 591 – Box of Bricks

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n,i,j,k,sum,a,d,c;

    for(k=1;;k++)
    {
        scanf("%d",&n);
        if(n==0)
        {
            break;
        }
        int N[n];
        for(i=0;i<n;i++)
        {
            scanf("%d",&N[i]);
        }
        sum=0;
        for(i=0;i<n;i++)
        {
            sum=sum+N[i];
        }
        a=sum/n;
        d=0;
        for(i=0;i<n;i++)
        {
            if(N[i]>a)
            {
                c=N[i]-a;
                d=d+c;
            }
        }
        printf("Set #%d\nThe minimum number of moves is %d.\n\n",k,d);
    }
    return 0;
}

UVa – 488 – Triangle wave

#include <bits/stdc++.h>

using namespace std;

int main()
{

    freopen("in.txt","r",stdin);
   // freopen("out.txt","w",stdout);
    int t,i,j,k,l,amp,fre;
    int a[9];
    cin>>t;

    for(i=1;i<=t;i++)
    {
        cin>>amp>>fre;
        for(j=1;j<=fre;j++)
        {
            for(k=1;k<=amp;k++)
            {
                for(l=0;l<k;l++)
                {
                    a[l]=k;
                    cout<<a[l];
                }
                cout<<endl;
            }
            for(k=amp-1;k>=1;k--)
            {
                for(l=0;l<k;l++)
                {
                    a[l]=k;
                    cout<<a[l];
                }
                cout<<endl;
            }
            if(j!=fre) cout<<endl;
        }
        if(i!=t) cout<<endl;
    }
    return 0;
}

UVa – 11057 – Exact sum

#include <bits/stdc++.h>

#define pf                  printf
#define sf(a)               scanf("%d",&a)
#define sfl(a)              scanf("%lld",&a)
#define sff(a,b)            scanf("%d %d",&a,&b)
#define sffl(a,b)           scanf("%lld %lld",&a,&b)
#define sfff(a,b,c)         scanf("%d %d %d",&a,&b,&c)
#define sfffl(a,b,c)        scanf("%lld %lld %lld",&a,&b,&c)
#define sffff(a,b,c,d)      scanf("%d %d %d %d",&a,&b,&c,&d)
#define sffffl(a,b,c,d)     scanf("%lld %lld %lld %lld",&a,&b,&c,&d)
#define sfffff(a,b,c,d,e)   scanf("%d %d %d %d %d",&a,&b,&c,&d,&e)
#define sfffffl(a,b,c,d,e)  scanf("%lld %lld %lld %lld %lld",&a,&b,&c,&d,&e)
#define sfc(a)              scanf("%c",&a)
#define ms(a,b)             memset(a,b,sizeof(a))
#define pb(a)               push_back(a)
#define pbp(a,b)            push_back({a,b})
#define db                  double
#define ft                  float
#define ll                  long long
#define ull                 unsigned long long
#define ff                  first
#define ss                  second
#define sz(x)               x.size()
#define qu                  queue
#define pqu                 priority_queue
#define vc                  vector
#define vi                  vector<int>
#define vll                 vector<long long>
#define pii                 pair<int,int>
#define pis                 pair<int,string>
#define psi                 pair<string,int>
#define all(x)              x.begin(),x.end()
#define CIN                 ios_base::sync_with_stdio(0); cin.tie(0)
#define max3(a, b, c)       max(a, b) > max(b, c) ? max(a, b) : max(b, c)
#define min3(a, b, c)       min(a, b) < min(b, c) ? min(a, b) : min(b, c)
#define loop0(i,n)          for(int i=0;i<n;i++)
#define loop1(i,n)          for(int i=1;i<=n;i++)
#define loopab(i,a,b)       for(int i=a;i<=b;i++)
#define stlloop(x)          for(__typeof(x.begin()) it=x.begin();it!=x.end();it++)
#define gcd(a, b)           __gcd(a, b)
#define lcm(a, b)           ((a)*((b)/gcd(a,b)))
#define case1(z)            cout<<"Case "<<z<<": "
#define case2(z)            printf("Case %d: ",z)
#define PI                  3.14159265358979323846264338328
#define valid(tx,ty)        tx>=0 && tx<r && ty>=0 && ty<c
#define intlim              2147483648
#define MAX                 1000000
#define inf                 10000000

/*------------------------------Graph Moves----------------------------*/
//const int fx[]={+1,-1,+0,+0};
//const int fy[]={+0,+0,+1,-1};
//const int fx[]={+0,+0,+1,-1,-1,+1,-1,+1};   // Kings Move
//const int fy[]={-1,+1,+0,+0,+1,+1,-1,-1};  // Kings Move
//const int fx[]={-2, -2, -1, -1,  1,  1,  2,  2};  // Knights Move
//const int fy[]={-1,  1, -2,  2, -2,  2, -1,  1}; // Knights Move
/*---------------------------------------------------------------------*/

using namespace std;

int a[10004];

int main()
{
    //CIN;
//    freopen("in.txt","r",stdin);
//    freopen("out.txt","w",stdout);
    int n,k=1;
    while(sf(n)==1)
    {
        int m;
        loop0(i,n)
        {
            sf(a[i]);
        }
        sort(a,a+n);
        int sum,ans=inf;
        sf(sum);
        int y,z;
        for(int i=0; a[i]<=sum/2; i++)
        {
            int x=sum-a[i];
            if(binary_search(a+(i+1),a+n,x))
            {
                int d=abs(x-a[i]);
                if(d<ans)
                {
                    ans=d;
                    y=a[i];
                    z=x;
                }
            }
        }
        if(k>1) pf("\n");
        pf("Peter should buy books whose prices are %d and %d.\n",y,z);
        k++;
    }
    pf("\n");
    return 0;
}

UVa – 10931 – Parity

Solution 1: Using Array

#include <bits/stdc++.h>

using namespace std;

long long A[220000000];

int main()
{
    long long n,a,c,d,x,i,m,j,k;
    while(cin>>a)
    {
        if(a==0)
        {
            break;
        }
        n=a;
        i=0;
        while(n!=0)
        {
            d=n%2;
            A[i]=d;
            n=n/2;
            i++;
        }
        reverse(A,A+i);
        c=0;
        for(j=0; j<i; j++)
        {
            if(A[j]==1)
            {
                c++;
            }
        }
        cout<<"The parity of ";
        for(j=0; j<i; j++)
        {
            cout<<A[j];
        }
        cout<<" is "<<c<<" (mod 2)."<<endl;
    }
    return 0;
}

Solution 2: Using String

#include <bits/stdc++.h>

using namespace std;

int main()
{
    long long n,a,c,d,i;
    while(cin>>a)
    {

        string s;
        if(a==0)
        {
            break;
        }
        n=a;
        i=0;
        while(n!=0)
        {
            d=n%2;
            s+=d+'0';    ///  s+=d+48 can be written...same thing.
            n=n/2;
            i++;
        }
        reverse(s.begin(),s.end());
        c=0;
        for(i=0; i<s.size(); i++)
        {
            if(s[i]=='1')
            {
                c++;
            }
        }
        cout<<"The parity of "<<s<<" is "<<c<<" (mod 2)."<<endl;
    }
    return 0;
}

UVa – 11364 – Parking

#include <bits/stdc++.h>

#define pf                  printf
#define sf(a)               scanf("%d",&a)
#define sfl(a)              scanf("%lld",&a)
#define sff(a,b)            scanf("%d %d",&a,&b)
#define sffl(a,b)           scanf("%lld %lld",&a,&b)
#define sfff(a,b,c)         scanf("%d %d %d",&a,&b,&c)
#define sfffl(a,b,c)        scanf("%lld %lld %lld",&a,&b,&c)
#define sffff(a,b,c,d)      scanf("%d %d %d %d",&a,&b,&c,&d)
#define sffffl(a,b,c,d)     scanf("%lld %lld %lld %lld",&a,&b,&c,&d)
#define sfffff(a,b,c,d,e)   scanf("%d %d %d %d %d",&a,&b,&c,&d,&e)
#define sfffffl(a,b,c,d,e)  scanf("%lld %lld %lld %lld %lld",&a,&b,&c,&d,&e)
#define sfc(a)              scanf("%c",&a)
#define pii                 pair<int,int>
#define ms(a,b)             memset(a,b,sizeof(a))
#define pb(a)               push_back(a)
#define pbp(a,b)            push_back({a,b})
#define db                  double
#define ft                  float
#define ll                  long long
#define ull                 unsigned long long
#define pii                 pair<int,int>
#define ff                  first
#define ss                  second
#define sz(x)               x.size()
#define all(x)              x.begin(),x.end()
#define CIN                 ios_base::sync_with_stdio(0); cin.tie(0)
#define max3(a, b, c)       max(a, b) > max(b, c) ? max(a, b) : max(b, c)
#define min3(a, b, c)       min(a, b) < min(b, c) ? min(a, b) : min(b, c)
#define for0(i,n)           for(int i=0;i<n;i++)
#define for1(i,n)           for(int i=1;i<=n;i++)
#define forrev(i,n)         for(int i=n-1; i>=0; i--)
#define forab(i,a,b)        for(int i=a;i<=b;i++)
#define forba(i,b,a)        for(int i=b;i>=a;i--)
#define stlloop(x)          for(__typeof(x.begin()) it=x.begin();it!=x.end();it++)
#define gcd(a, b)           __gcd(a, b)
#define lcm(a, b)           ((a)*((b)/gcd(a,b)))
#define case1(z)            cout<<"Case "<<z<<": "
#define case2(z)            printf("Case %d: ",z)
#define PI                  acos(-1) //3.14159265358979323846264338328
#define valid(tx,ty)        tx>=0 && tx<n && ty>=0 && ty<m
#define intlim              2147483648
#define MAX                 100005
#define inf                 100000008

/*------------------------------Graph Moves----------------------------*/
//const int fx[]= {+1,-1,+0,+0};
//const int fy[]= {+0,+0,+1,-1};
//const int fx[]={+0,+0,+1,-1,-1,+1,-1,+1};   // Kings Move
//const int fy[]={-1,+1,+0,+0,+1,+1,-1,-1};  // Kings Move
//const int fx[]={-2, -2, -1, -1,  1,  1,  2,  2};  // Knights Move
//const int fy[]={-1,  1, -2,  2, -2,  2, -1,  1}; // Knights Move
/*---------------------------------------------------------------------*/

using namespace std;

int a[22];

int main()
{
    //CIN;
//    freopen("in.txt","r",stdin);
//    freopen("out.txt","w",stdout);
    int t;
    sf(t);
    for0(z,t)
    {
        int n;
        sf(n);
        for0(i,n) sf(a[i]);
        sort(a,a+n);
        cout<<(a[n-1]-a[0])*2<<endl;
    }
    return 0;
}