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
74
75
76
77
78
79
80
81
82
83
84
#include <iostream>
#include <vector>
#include <stdlib.h>
#include <math.h>
using namespace std;
int h,w,n,v,tempe;
bool intret;



int main()
{
    cin >> h >> w >> n;
    int d[n];
    int wy[n];
    int sz[n];
    for(int i = 0 ; i < n; i++)
    {
        cin >> d[i];
        if(i == 0 && (w%d[i] != 0 || h%d[i] != 0))
        {
            intret = true;
        }
    }
    if(intret)
    {
        cout << -1;
        return 0;
    }

    int o,th =0;
    th = h;
    for(int k = n; k > 0;k--)
    {
        o = 0;
        while(true)
        {
            if(th-d[k-1] < 0)
            {
                break;
            }
            th -= d[k-1];
            o++;
        }
        wy[k-1] = o;
    }
    th = w;
    for(int k = n; k > 0;k--)
    {
        o = 0;
        while(true)
        {
            if(th-d[k-1] < 0)
            {
                break;
            }
            th -= d[k-1];
            o++;
        }
        sz[k-1] = o;
    }
    for(int i = n-1;i >= 0; i--)
    {
        if( wy[i]==0)
        {
            continue;
        }
        if(w%wy[i] == 0)
        {
            v += w/wy[i];
            continue;
        }
        for(int j = 0; j < i;j++)
        {

            v += wy[i]*(d[i]/d[i-1])*d[n-i];

        }

    }
    cout << v -1;

    return 0;
}