Submission #1029902

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029902		lucri	Magic Show (APIO24_show)	C++17	35 / 100	3 ms	1076 KiB

Alice

#include <vector>
#include <utility>
long long setN(int n);
std::vector<std::pair<int,int>> Alice()
{
    std::vector<std::pair<int,int>>v;
    long long x=setN(5000);
    for(int i=2;i<=5000;++i)
        v.push_back({x%(i-1)+1,i});
    return v;
}

Bob

#include <bits/stdc++.h>
__int128 cmmdc(__int128 a,__int128 b,__int128 &x1,__int128 &x2)
{
    if(b==0)
    {
        x1=1;
        x2=0;
        return a;
    }
    __int128 val=cmmdc(b,a%b,x1,x2),cop;
    cop=x1;
    x1=x2;
    x2=cop-a/b*x2;
    return val;
}
long long Bob(std::vector<std::pair<int,int>> V)
{
    __int128 a=0,b=1,aa,bb;
    __int128 n=V.size();
    for(__int128 i=0;i<n;++i)
    {
        aa=V[i].first-1;
        bb=V[i].second-1;
        __int128 x1,x2;
        __int128 d=cmmdc(b,bb,x1,x2);
        a=a+x1*(aa-a)/d*b;
        b=b*bb/d;
        a%=b;
        if(a<=0)
            a+=b;
        if(b>=1000000000000000000)
            return a;
    }
    exit(1);
}

• Subtask 1: 5 / 5
• Subtask 2: 30 / 30
• Subtask 3: 0 / 65