Submission #12161

# Submission time Handle Problem Language Result Execution time Memory
12161 2014-12-21T12:45:47 Z xhae Min-cost GCD (GA9_mcg) C++14
57 / 100
1000 ms 1580 KB
#include <unordered_map>
#include <cstdio>
#include <algorithm>

using namespace std;

class llhash
{
	public:
		size_t operator()(const pair<long long, long long>& x) const
		{
			size_t h = (x.first << 32) | ((x.second << 32) >> 32);
			return h;
		}
};

unordered_map<pair<long long, long long>, long long, llhash> dp;

long long a, b, p, q;
const long long INF = 1000000ll * 1000000ll * 500000ll;
 
long long getAns(long long a, long long b)
{
    if(a == 0 || b == 0) return 0;
 
    pair<long long, long long> cur = make_pair(a, b);
    if(dp.count(cur)) return dp[cur];
     
    long long ret = p + getAns(b, a % b);
 
    if(a >= b)
    {
        long long howMany = a / b;
        if(howMany <= ret / (double)q)
        {
            long long cand = howMany * q + getAns(a % b, b);
            ret = min(cand, ret);
        }
    }
    else
    {
        long long howMany = b / a;
        if(howMany <= ret / (double)q)
        {
            long long cand = howMany * q + getAns(a, b % a);
            ret = min(cand, ret);
        }
    }
 
    return dp[cur] = ret;
}
 
int main(void)
{
    int T;
    scanf("%d", &T);
    while(T--)
    {
        scanf("%lld %lld %lld %lld", &a, &b, &p, &q);
        dp.clear();
        printf("%lld\n", getAns(a, b));
    }
 
    return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 0 ms 1580 KB Output is correct
2 Correct 0 ms 1580 KB Output is correct
3 Correct 0 ms 1580 KB Output is correct
4 Correct 0 ms 1580 KB Output is correct
5 Correct 0 ms 1580 KB Output is correct
6 Correct 0 ms 1580 KB Output is correct
7 Correct 0 ms 1580 KB Output is correct
8 Correct 0 ms 1580 KB Output is correct
9 Correct 0 ms 1580 KB Output is correct
10 Correct 0 ms 1580 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 134 ms 1580 KB Output is correct
2 Correct 219 ms 1580 KB Output is correct
3 Correct 234 ms 1580 KB Output is correct
4 Correct 251 ms 1580 KB Output is correct
5 Correct 134 ms 1580 KB Output is correct
6 Correct 250 ms 1580 KB Output is correct
7 Correct 222 ms 1580 KB Output is correct
8 Correct 151 ms 1580 KB Output is correct
9 Correct 229 ms 1580 KB Output is correct
10 Correct 183 ms 1580 KB Output is correct
11 Correct 215 ms 1580 KB Output is correct
12 Correct 138 ms 1580 KB Output is correct
13 Correct 208 ms 1580 KB Output is correct
14 Correct 0 ms 1580 KB Output is correct
15 Correct 2 ms 1580 KB Output is correct
16 Correct 2 ms 1580 KB Output is correct
17 Correct 0 ms 1580 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 3 ms 1580 KB Output is correct
2 Correct 6 ms 1580 KB Output is correct
3 Correct 6 ms 1580 KB Output is correct
4 Correct 6 ms 1580 KB Output is correct
5 Correct 3 ms 1580 KB Output is correct
6 Correct 5 ms 1580 KB Output is correct
7 Correct 6 ms 1580 KB Output is correct
8 Correct 6 ms 1580 KB Output is correct
9 Correct 4 ms 1580 KB Output is correct
10 Correct 6 ms 1580 KB Output is correct
11 Correct 6 ms 1580 KB Output is correct
12 Correct 5 ms 1580 KB Output is correct
13 Correct 5 ms 1580 KB Output is correct
14 Correct 2 ms 1580 KB Output is correct
15 Correct 0 ms 1580 KB Output is correct
16 Correct 3 ms 1580 KB Output is correct
17 Correct 2 ms 1580 KB Output is correct
18 Correct 0 ms 1580 KB Output is correct
19 Correct 8 ms 1580 KB Output is correct
20 Correct 9 ms 1580 KB Output is correct
21 Correct 8 ms 1580 KB Output is correct
22 Correct 8 ms 1580 KB Output is correct
23 Correct 9 ms 1580 KB Output is correct
24 Correct 8 ms 1580 KB Output is correct
25 Correct 8 ms 1580 KB Output is correct
26 Correct 8 ms 1580 KB Output is correct
27 Correct 8 ms 1580 KB Output is correct
28 Correct 6 ms 1580 KB Output is correct
29 Correct 8 ms 1580 KB Output is correct
30 Correct 8 ms 1580 KB Output is correct
31 Correct 8 ms 1580 KB Output is correct
# Verdict Execution time Memory Grader output
1 Execution timed out 1000 ms 1580 KB Program timed out
2 Halted 0 ms 0 KB -