QOJ.ac
QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#76121 | #5464. Dice Game | zhouhuanyi | WA | 55ms | 3708kb | C++14 | 1.7kb | 2023-02-07 19:18:20 | 2023-02-07 19:18:22 |
Judging History
answer
#include<iostream>
#include<cstdio>
#include<algorithm>
#define N 29
#define mod 998244353
using namespace std;
int read()
{
char c=0;
int sum=0;
while (c<'0'||c>'9') c=getchar();
while ('0'<=c&&c<='9') sum=sum*10+c-'0',c=getchar();
return sum;
}
void Adder(int &x,int d)
{
x+=d;
if (x>=mod) x-=mod;
return;
}
void Adder2(int &x,int d)
{
x+=d;
if (x<0) x+=mod;
return;
}
int MD(int x)
{
return (x>=mod)?x-mod:x;
}
int MD2(int x)
{
return (x<0)?x+mod:x;
}
int fast_pow(int a,int b)
{
int res=1,mul=a;
while (b)
{
if (b&1) res=1ll*res*mul%mod;
mul=1ll*mul*mul%mod,b>>=1;
}
return res;
}
int T,n,cnt,inv2,F[N+1],ans;
bool used[N+1];
long long delta[N+1];
bool cmp(long long x,long long y)
{
return x>y;
}
void dfs(int x,bool op,long long res)
{
int dst=0;
long long rst=0;
for (int i=0;i<=x;++i) rst+=delta[i];
if (res+rst<=0) return;
if (res-rst>0&&(x==-1||op))
{
for (int i=x+1;i<=cnt;++i)
{
if (!used[i]) Adder(dst,delta[i]%mod);
else Adder2(dst,-delta[i]%mod);
}
for (int i=0;i<=x;++i) dst=2ll*dst%mod;
Adder(ans,dst);
return;
}
used[x]=0,dfs(x-1,op|(((n-1)>>x)&1),res+delta[x]);
if (op||(((n-1)>>x)&1)) used[x]=1,dfs(x-1,op,res-delta[x]);
return;
}
int main()
{
T=read(),inv2=(mod+1)>>1;
while (T--)
{
n=read(),cnt=ans=0;
while ((1<<cnt)<n) cnt++;
for (int i=0;i<=cnt;++i) F[i]=n/(1<<(i+1))*(1<<i)+max(n%(1<<(i+1))-(1<<i),0),delta[i]=1ll*F[i]*(1<<i);
dfs(cnt,0,0),ans=1ll*ans*fast_pow(n,mod-2)%mod,Adder(ans,1ll*n*(n-1)%mod*inv2%mod),printf("%lld\n",1ll*ans*fast_pow(n,mod-2)%mod);
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 2ms
memory: 3488kb
input:
4 1 2 3 4
output:
0 249561089 776412276 2
result:
ok 4 number(s): "0 249561089 776412276 2"
Test #2:
score: 0
Accepted
time: 1ms
memory: 3540kb
input:
100 119 75 29 10 17 29 449 71 72 12 79 117 83 80 35 272 105 497 346 287 362 140 297 167 111 419 210 212 170 413 373 210 196 39 1 101 258 496 333 293 392 2 187 431 157 342 436 106 449 136 378 243 357 325 237 254 22 292 62 435 18 446 471 18 42 377 181 350 19 389 212 58 45 70 52 63 107 71 66 355 381 30...
output:
645006489 296012775 400009943 299473312 221064504 400009943 60548260 896063466 573066250 471393174 175624519 531171954 143020402 134763040 560646647 43176836 269095960 284396636 191400715 895243672 967774080 745220060 584864173 5941827 724073586 701650152 262576881 417830609 833275086 916357319 1435...
result:
ok 100 numbers
Test #3:
score: 0
Accepted
time: 2ms
memory: 3484kb
input:
10 321 4212 2977 3438 679 2518 3359 2348 861 1853
output:
115992677 210903174 216412050 780704799 956649209 200804004 267658252 194263892 880330717 328032438
result:
ok 10 numbers
Test #4:
score: 0
Accepted
time: 2ms
memory: 3708kb
input:
12 3324 3167 3780 2887 1541 494 4374 3416 4036 3637 3888 4630
output:
458228110 29999980 333283438 544178470 753289945 257353919 515561689 628492255 799560584 924311157 17047279 109086825
result:
ok 12 numbers
Test #5:
score: -100
Wrong Answer
time: 55ms
memory: 3520kb
input:
10000 11424730 231352165 835903988 101946284 358678826 610737477 100503274 909725926 510714513 407317433 668332866 442951503 582321912 117772499 180141789 570384258 375362779 724696666 959258227 178470161 245672142 629464136 515375633 58812672 119047157 272587596 993112981 678095944 67996298 2717673...
output:
773455292 683434339 182332251 556925397 373813268 608944448 885103862 543327204 363171013 39127815 563031932 379719425 177389274 984335744 921358821 6154515 794912670 557560182 974355986 715778235 787641175 3491523 129631023 833866379 684235514 582438570 777549926 531401370 355500500 107587772 72811...
result:
wrong answer 3rd numbers differ - expected: '654770591', found: '182332251'