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Submission #12164

# Submission time Handle Problem Language Result Execution time Memory
12164 2014-12-21T12:53:36 Z xhae Min-cost GCD (GA9_mcg) C++14
0 / 100
 677 ms 1212 KB 
#include <map>
#include <cstdio>
#include <algorithm>
 
using namespace std;
 
map<pair<long long, long long>, long long> 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(q < p)
	{
    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;
}

Subtask #1
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1212 KB Output is correct
2 Incorrect 0 ms 1212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 119 ms 1212 KB Output is correct
2 Incorrect 116 ms 1212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 1212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 43.0

# Verdict Execution time Memory Grader output
1 Incorrect 677 ms 1212 KB Output isn't correct
2 Halted 0 ms 0 KB -