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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
26 lines
514 B
C++
26 lines
514 B
C++
#include<cstdio>
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#include<cstring>
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#include<iostream>
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using namespace std ;
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typedef __int64 ll ;
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int main()
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{
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ll n , m , l , z ;
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int t ;
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scanf("%d" , &t) ;
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while(t--)
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{
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scanf("%I64d%I64d%I64d%I64d" , &n , &m , &z, &l) ;
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ll ans = 0 ;
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ll pre = 0 ;
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ll now ;
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for(int i = 2;i <= n;i++)
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{
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now = (pre*m + z)%l ;
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ans = ans^(2*now) ;
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pre = now ;
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}
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printf("%I64d\n" , ans) ;
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}
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}
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