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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#693296 | #7735. Primitive Root | sjcx | WA | 5ms | 3888kb | C++23 | 1.1kb | 2024-10-31 15:55:04 | 2024-10-31 15:55:10 |
Judging History
answer
#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cmath>
#include<cstring>
#include<vector>
#include<queue>
#include<random>
#include<ctime>
using namespace std;
#define re int
#define ll long long
inline ll read(){
ll x=0,ff=1;char c=getchar();
while(c<'0'||c>'9'){if(c=='-')ff=-1;c=getchar();}
while(c>='0'&&c<='9'){x=(x<<1)+(x<<3)+(c^'0');c=getchar();}
return x*ff;
}
inline int hbit(ll x){
for(re i=59;i>=0;i--)
if((x>>i)&1)return i;
return 23333;
}
int main(){
int t=read(),x,y;ll p,m,ss;
while(t--){
p=read();m=read();
if(m==0){
if(p==2)puts("1");
else puts("0");
continue;
}
if(p==2&&m<=3){
if(m<2)puts("1");
else puts("2");
continue;
}
x=hbit(p-1);y=hbit(m);
if(x>=y){
if(m>=p)puts("1");
else puts("0");
continue;
}
ll u=m&(((1ll<<(y+1))-1)^((1ll<<(x+1))-1));
ll v=m-u;
ss=(u-1)/p+(((u-1)%p)>=1);
ll _u=u;u%=p;
u^=((p+1-u)%p)^(p-1);
if(u<=v)ss++;
_u%=p;
_u^=((p+1-_u)%p+p)^(p-1);
if(_u<=v)ss++;
printf("%lld\n",ss);
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3820kb
input:
3 2 0 7 11 1145141 998244353
output:
1 2 872
result:
ok 3 lines
Test #2:
score: -100
Wrong Answer
time: 5ms
memory: 3888kb
input:
47595 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 17 2 18 2 19 2 20 2 21 2 22 2 23 2 24 2 25 2 26 2 27 2 28 2 29 2 30 2 31 2 32 2 33 2 34 2 35 2 36 2 37 2 38 2 39 2 40 2 41 2 42 2 43 2 44 2 45 2 46 2 47 2 48 2 49 2 50 2 51 2 52 2 53 2 54 2 55 2 56 2 57 2 58 2 59 2 60...
output:
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52 52 53 53 ...
result:
wrong answer 506th lines differ - expected: '1', found: '2'