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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#44073 | #4543. Sumire | Cfer | WA | 353ms | 3984kb | C++17 | 1.9kb | 2022-08-12 17:30:21 | 2022-08-12 17:30:23 |
Judging History
answer
#include<iostream>
#include<cstring>
#include<algorithm>
#include<vector>
#include<queue>
#include<stack>
#include<set>
#include<map>
#include<cmath>
#include<bitset>
#include<cmath>
#define int long long
#define x first
#define y second
#define ps push_back
#define endl '\n'
#define kd ios::sync_with_stdio(false);cin.tie();cout.tie(0);
using namespace std;
typedef pair<int,int>pi;
const int N=100,mod=1e9+7;
int lowbit(int x){return x&-x;}
int gcd(int a,int b){return a%b==0?b:gcd(b,a%b);}
int a[N];
int d[N][N][2][2];
int D,k,B,l,r;
int qmi(int x,int b)
{
int res=1;
while(b)
{
if(b&1)res=res*x%mod;
b>>=1;
x=x*x%mod;
}
return res;
}
int dfs(int len,int sum,int lead,int limit)
{
if(!len)return qmi(sum,k);
int &v=d[len][sum][lead][limit];
if(~v)return v;
int up=limit?a[len]:B-1;
int res=0;
if(D==0)
{
if(up==0)res=(res+dfs(len-1,sum+!lead,lead,limit))%mod;
else
{
res=(res+dfs(len-1,sum+!lead,lead,0))%mod;//填入 D
res=(res+(up-2+1)*dfs(len-1,sum,0,0)%mod)%mod; // 非D也非 U
res=(res+dfs(len-1,sum,0,limit))%mod; //U
}
}
else
{
if(up>D)
{
res=(res+dfs(len-1,sum+1,0,0))%mod;//填入D
res=(res+dfs(len-1,sum,0,0)*(up+1-2)%mod)%mod;// 不填D 和Lim
res=(res+dfs(len-1,sum,0,limit))%mod;// 填Lim
}
else if(up==D)
{
res=(res+dfs(len-1,sum+1,0,limit))%mod;//填入D
res=(res+dfs(len-1,sum,0,0)*up%mod)%mod;// 不填D
}
else
{
res=(res+up*dfs(len-1,sum,0,0)%mod)%mod;//不填Lim
res=(res+dfs(len-1,sum,0,limit))%mod;// 填Lim
}
}
return v=res%mod;
}
int get(int x)
{
memset(d,-1,sizeof d);
int len=0;
while(x)a[++len]=x%B,x/=B;
return dfs(len,0,1,1);
}
void solve()
{
cin>>k>>B>>D>>l>>r;
cout<<((get(r)-get(l-1))%mod+mod)%mod<<endl;
}
signed main()
{
kd;
int _;_=1;
cin>>_;
while(_--)solve();
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 353ms
memory: 3984kb
input:
10000 3 207891369 69789899 964252340141144201 993463302889356041 3 747663427 196567324 607861784354966835 737019014793415965 7 4 1 75021281026163040 281275352760223247 159801714 6 4 57793681483331990 719907284728404544 760336565 3 2 640278753805042190 790056554571568287 3 3 0 370833904610234656 7289...
output:
348402080 920411258 659717287 394377489 330035010 995308641 312874977 375991223 465046227 263340736 704957449 599053093 345964631 546866401 355527840 906886371 165223493 924963116 97531004 174290409 257548623 852781447 29936714 204554940 926403980 440327688 351876140 824109444 816114821 745424255 69...
result:
wrong answer 44th lines differ - expected: '89804799', found: '608195384'