oj.uz

답안 #473874

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
473874 2021-09-16T11:00:01 Z HossamHero7 Euklid (COCI20_euklid) C++14
27 / 110
 1000 ms 70992 KB 
#include <bits/stdc++.h>
#include <unordered_map>
using namespace std;
typedef long long ll;
typedef vector <ll> row;
typedef vector <row> matrix;
#define endl '\n'
#define fast ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define all(v) ((v).begin()), ((v).end())
#define allR(v) ((v).rbegin()), ((v).rend())
#define For(i,n) for(int i=0;i<(int)(n);i++)
#define sz(v) v.size()
#define swapS(a,b) if(a>b) swap(a,b)
const ll mod = 1e9+7;
const ll OO = 1e18;
const ll invalid = -1e18;
int dx[] = {0,0,-1,1,1,1,-1,-1};
int dy[] = {1,-1,0,0,1,-1,-1,1};
ll fixMod(ll x){
    return ((x%mod) + mod) % mod;
}
ll lcm(ll a,ll b){
    return max(a,b)/__gcd(a,b)*min(a,b);
}
ll power(ll a,ll b){
    if(b==0) return 1;
    if(b==1) return a;
    if(b&1){
        ll y=power(a,b/2);
        return (y*y*a);
    }
    else {
        ll y=power(a,b/2);
        return (y*y);
    }
}
ll inv(ll n){
    return power(n,(mod-2));
}
matrix zero(int n,int m){
    return matrix(n,row(m,0));
}
matrix identity(int n){
    matrix ret = zero(n,n);
    for(int i=0;i<n;i++){
        ret[i][i] = 1;
    }
    return ret;
}
matrix multiply(const matrix &a, const matrix &b){
    matrix ret = zero(a.size(),b[0].size());
    for(int i=0;i<a.size();i++){
        for(int k=0;k<a[0].size();k++){
            for(int j=0;j<b[0].size();j++){
                ret[i][j] += a[i][k] * b[k][j];
                ret[i][j] = ret[i][j];
            }
        }
    }
    return ret;
}
matrix matrixPower(matrix &a,ll b){
    if(b == 0) return identity(a.size());
    if(b == 1) return a;
    matrix r = matrixPower(a,b/2);
    if(b&1) return multiply(multiply(r,r),a);
    return multiply(r,r);
}
ll dp[3005][3005];
ll calc(int a,int b){
    ll &ret = dp[a][b];
    if(~ret) return ret;
    if(a<b) return ret = calc(b,a);
    if(a>=b && b > 1) return ret = calc(a/b,b);
    else return ret = a;
}
void solve(){
    ll g,h;
    cin>>g>>h;
    if(h == 2){
        cout<<g<<" "<<g*2<<endl;
        return;
    }
    if(g == h){
        cout<<g<<" "<<h<<endl;
        return;
    }
    for(int i=1;i<=3000;i++){
        for(int j=1;j<=3000;j++){
            if(__gcd(i,j) == g && calc(i,j) == h){
                cout<<i<<" "<<j<<endl;
                return;
            }
        }
    }
}
int main()
{
    fast
    ll t=1;
    cin>>t;
    memset(dp,-1,sizeof(dp));
    while(t--){
        //Some important Notes:
        //  1- Any minus with mod fixed mod
        //  2- Any divide with mod inverse
        //  3- Any mod problem make mod in every where
        //  4- Any dp problem don't forget to return the saved value :)
        solve();
    }
    return 0;
}

Compilation message

euklid.cpp: In function 'matrix multiply(const matrix&, const matrix&)':
euklid.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |     for(int i=0;i<a.size();i++){
      |                 ~^~~~~~~~~
euklid.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |         for(int k=0;k<a[0].size();k++){
      |                     ~^~~~~~~~~~~~
euklid.cpp:54:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |             for(int j=0;j<b[0].size();j++){
      |                         ~^~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 70988 KB Output is correct
2 Correct 31 ms 70916 KB Output is correct
3 Correct 31 ms 70864 KB Output is correct
4 Correct 33 ms 70904 KB Output is correct
5 Correct 32 ms 70980 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 32 ms 70876 KB Output is correct
2 Correct 31 ms 70852 KB Output is correct
3 Correct 31 ms 70888 KB Output is correct
4 Correct 31 ms 70872 KB Output is correct
5 Correct 31 ms 70992 KB Output is correct
6 Correct 32 ms 70956 KB Output is correct
7 Correct 31 ms 70980 KB Output is correct
8 Correct 30 ms 70856 KB Output is correct
9 Correct 32 ms 70976 KB Output is correct

Subtask #3
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1087 ms 70932 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 70888 KB Output is correct
2 Correct 58 ms 70988 KB Output is correct
3 Correct 61 ms 70972 KB Output is correct
4 Correct 66 ms 70976 KB Output is correct
5 Correct 68 ms 70988 KB Output is correct
6 Correct 75 ms 70980 KB Output is correct
7 Correct 83 ms 70988 KB Output is correct
8 Correct 94 ms 70980 KB Output is correct
9 Correct 103 ms 70976 KB Output is correct
10 Correct 123 ms 70904 KB Output is correct

Subtask #5
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 70888 KB Output is correct
2 Correct 58 ms 70988 KB Output is correct
3 Correct 61 ms 70972 KB Output is correct
4 Correct 66 ms 70976 KB Output is correct
5 Correct 68 ms 70988 KB Output is correct
6 Correct 75 ms 70980 KB Output is correct
7 Correct 83 ms 70988 KB Output is correct
8 Correct 94 ms 70980 KB Output is correct
9 Correct 103 ms 70976 KB Output is correct
10 Correct 123 ms 70904 KB Output is correct
11 Execution timed out 1089 ms 70848 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 70988 KB Output is correct
2 Correct 31 ms 70916 KB Output is correct
3 Correct 31 ms 70864 KB Output is correct
4 Correct 33 ms 70904 KB Output is correct
5 Correct 32 ms 70980 KB Output is correct
6 Correct 32 ms 70876 KB Output is correct
7 Correct 31 ms 70852 KB Output is correct
8 Correct 31 ms 70888 KB Output is correct
9 Correct 31 ms 70872 KB Output is correct
10 Correct 31 ms 70992 KB Output is correct
11 Correct 32 ms 70956 KB Output is correct
12 Correct 31 ms 70980 KB Output is correct
13 Correct 30 ms 70856 KB Output is correct
14 Correct 32 ms 70976 KB Output is correct
15 Execution timed out 1087 ms 70932 KB Time limit exceeded
16 Halted 0 ms 0 KB -