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 |
---|---|---|---|---|---|---|---|---|---|
#765748 | #9254. Random Variables | piggy123 | TL | 946ms | 17544kb | C++17 | 3.7kb | 2024-11-20 15:10:21 | 2024-11-20 15:10:23 |
Judging History
answer
#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll C[1005][1005],C2[1005],inv[1005],pw[1005],dp[1005][1005],mod;
const ll N=1000;
ll qkp(ll a,ll k){
ll ans=1;
while (k){
if (k&1)ans*=a,ans%=mod;
a*=a,a%=mod;
k>>=1;
}
return ans;
}
int main() {
ll T;
cin >> T >> mod;
C[0][0]=1;
for (ll i=1; i<=N; i++) {
C[i][0]=1;
for (ll j=1; j<=N; j++) {
C[i][j]=(C[i-1][j]+C[i-1][j-1])%mod;
}
}
while (T--) {
ll n,m;
cin >> n >> m;
C2[0]=1;
vector<ll> vct;
for (ll i=1;i<=n;i++){
vct.push_back(m-i+1);
ll z=i;
for (ll &j:vct){
if (z==1)break;
ll g=__gcd(j,z);
j/=g,z/=g;
}
C2[i]=1;
for (ll j:vct)C2[i]*=j,C2[i]%=mod;
}
ll ans=0;
for (ll i=1;i<=n;i++){
dp[0][0]=1;
for(ll j=0;j<=min(n/(i+1),m);j++){
for (ll k=1;k<=n;k++){
dp[j][k]=(dp[j][k-1]*j%mod+(k>=i+1&&j?dp[j-1][k-i-1]*C[k-1][i]%mod*j%mod:0))%mod;
}
ll sm=0;
pw[0]=1;
for (ll i=1;i<=n;i++)pw[i]=pw[i-1]*(m-j)%mod;
for (ll k=0;k<=n;k++){
sm+=dp[j][k]*C[n][k]%mod*pw[n-k]%mod;
sm%=mod;
}
if (j&1){
ans-=sm*C2[j]%mod;
}else{
ans+=sm*C2[j]%mod;
}
// cout<<"!"<<sm<< endl;
ans+=mod;
ans%=mod;
}
// cout<< ans<<"\n";
}
pw[0]=1;
for (ll i=1;i<=n;i++)pw[i]=pw[i-1]*m%mod;
cout<< ((n+1)*pw[n]%mod-ans+mod)%mod<<"\n";
}
return 0;
}
/*
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■ ■■ ■ ■ ■ ■ ■■ ■■ ■■ ■
■ ■■ ■ ■ ■ ■ ■■ ■■ ■ ■ ■■
■ ■■ ■■ ■■ ■■ ■■ ■■ ■■ ■ ■■ ■■
■ ■■ ■■■■ ■■■■ ■■ ■■ ■■■■■■ ■■■■
*/
详细
Test #1:
score: 100
Accepted
time: 3ms
memory: 12584kb
input:
3 123456789 3 2 5 5 7 7
output:
18 7145 2066323
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 6ms
memory: 12588kb
input:
100 2 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0
result:
ok 100 lines
Test #3:
score: 0
Accepted
time: 6ms
memory: 11740kb
input:
100 3 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 2 0 1 2 0 1 2 0 1 2 0 0 2 0 0 2 0 0 2 0 0 0 0 0 0 0 0 0 0 1 2 0 1 2 0 1 2 0 1 2 2 0 2 2 0 2 2 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 2 2 0 2 2 0 2 2 0 2 0 0 0 0 0 0 0 0 0 0 1 2 0 1 2 0 1 2 0 1
result:
ok 100 lines
Test #4:
score: 0
Accepted
time: 3ms
memory: 12840kb
input:
100 4 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 2 3 0 1 2 3 0 1 2 2 2 0 0 2 2 0 0 2 2 3 2 3 0 3 2 3 0 3 2 0 0 0 0 0 0 0 0 0 0 1 2 3 0 1 2 3 0 1 2 2 0 2 0 2 0 2 0 2 0 3 0 3 0 3 0 3 0 3 0 0 0 0 0 0 0 0 0 0 0 1 2 3 0 1 2 3 0 1 2 2 0 2 0 2 0 2 0 2 0
result:
ok 100 lines
Test #5:
score: 0
Accepted
time: 6ms
memory: 12520kb
input:
100 5 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 2 3 4 0 1 2 3 4 0 2 1 2 0 0 2 1 2 0 0 3 3 1 3 0 3 3 1 3 0 4 4 2 4 0 4 4 2 4 0 0 0 0 0 0 0 0 0 0 0 1 2 3 4 0 1 2 3 4 0 2 3 3 2 0 2 3 3 2 0 3 4 1 2 0 3 4 1 2 0 4 4 4 4 0 4 4 4 4 0 0 0 0 0 0 0 0 0 0 0
result:
ok 100 lines
Test #6:
score: 0
Accepted
time: 0ms
memory: 13168kb
input:
100 6 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 2 3 4 5 0 1 2 3 4 2 0 0 2 0 0 2 0 0 2 3 0 3 0 3 0 3 0 3 0 4 2 0 4 2 0 4 2 0 4 5 2 3 2 5 0 5 2 3 2 0 0 0 0 0 0 0 0 0 0 1 0 3 4 3 0 1 0 3 4 2 2 0 2 2 0 2 2 0 2 3 0 3 0 3 0 3 0 3 0 4 2 0 4 2 0 4 2 0 4
result:
ok 100 lines
Test #7:
score: 0
Accepted
time: 3ms
memory: 13332kb
input:
100 7 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 2 3 4 5 6 0 1 2 3 2 6 5 6 2 0 0 2 6 5 3 4 2 3 6 3 0 3 4 2 4 2 3 5 2 5 0 4 2 3 5 5 3 6 5 4 0 5 5 3 6 0 6 1 1 6 0 6 0 6 0 0 0 0 0 0 0 0 0 0 1 2 3 4 5 6 0 1 2 3 2 1 4 4 1 2 0 2 1 4 3 3 4 3 4 4 0 3 3 4
result:
ok 100 lines
Test #8:
score: 0
Accepted
time: 3ms
memory: 11768kb
input:
100 8 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 2 3 4 5 6 7 0 1 2 2 6 4 4 6 2 0 0 2 6 3 2 3 4 3 6 3 0 3 2 4 4 0 0 4 4 0 0 4 4 5 6 3 4 1 2 7 0 5 6 6 4 6 0 6 4 6 0 6 4 7 4 3 0 7 4 3 0 7 4 0 0 0 0 0 0 0 0 0 0 1 6 3 4 5 2 7 0 1 6 2 4 6 0 2 4 6 0 2 4
result:
ok 100 lines
Test #9:
score: 0
Accepted
time: 0ms
memory: 12340kb
input:
100 9 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 2...
output:
1 2 3 4 5 6 7 8 0 1 2 6 3 2 3 6 2 0 0 2 3 0 6 0 6 3 6 3 0 3 4 8 3 4 5 6 4 2 0 4 5 2 0 2 8 0 8 5 0 5 6 0 0 6 0 0 6 0 0 6 7 3 6 1 3 3 4 3 0 7 8 8 6 5 8 3 2 8 0 8 0 0 0 0 0 0 0 0 0 0 1 8 3 4 2 6 7 5 0 1
result:
ok 100 lines
Test #10:
score: 0
Accepted
time: 6ms
memory: 13640kb
input:
100 10 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 ...
output:
1 2 3 4 5 6 7 8 9 0 2 6 2 0 0 2 6 2 0 0 3 8 1 8 5 8 3 6 3 0 4 4 2 4 0 4 4 2 4 0 5 0 5 0 5 0 5 0 5 0 6 2 8 4 0 6 2 8 4 0 7 8 3 2 5 2 3 8 7 0 8 4 6 2 0 8 4 6 2 0 9 4 9 4 5 4 9 4 9 0 0 0 0 0 0 0 0 0 0 0
result:
ok 100 lines
Test #11:
score: 0
Accepted
time: 5ms
memory: 12076kb
input:
100 11 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 10 8 1 8 ...
output:
1 2 3 4 5 6 7 8 9 10 2 6 1 9 8 9 1 6 2 0 3 7 7 9 8 10 10 3 6 3 4 0 5 5 10 10 8 9 9 6 5 0 4 10 6 7 10 4 2 7 6 10 4 5 3 2 0 7 2 5 7 5 2 8 6 1 6 0 3 6 8 6 6 3 2 4 8 3 6 9 9 8 10 2 8 6 10 9 3 1 10 0 4 3 0 6 0 7 4 9
result:
ok 100 lines
Test #12:
score: 0
Accepted
time: 738ms
memory: 17284kb
input:
10 972033073 576 523187654 758 588616188 30 532959085 476 481773028 573 76725430 520 142462406 865 820120297 687 526533288 913 38106557 67 924529654
output:
259748390 909910217 708973357 300073565 463921261 889897372 587262932 255642402 868975954 14589849
result:
ok 10 lines
Test #13:
score: 0
Accepted
time: 946ms
memory: 17544kb
input:
10 922366485 846 278501607 683 609355362 44 978777279 545 730718412 926 323835432 883 761846029 623 408215612 989 588832935 449 743830620 259 183431187
output:
461786112 672633342 164805246 547995105 9661617 154501063 370848893 402005970 886523490 435107511
result:
ok 10 lines
Test #14:
score: 0
Accepted
time: 920ms
memory: 17384kb
input:
10 13890975 949 837425969 667 981449995 991 564074312 501 604745038 593 640307170 128 408163542 80 976891742 930 710947599 852 333118419 250 333252788
output:
3898759 9290500 7087084 4913904 196250 1746549 9627740 8673120 10274253 10549775
result:
ok 10 lines
Test #15:
score: 0
Accepted
time: 499ms
memory: 17516kb
input:
10 105576445 649 937885257 141 713063090 253 716966251 845 330657011 347 664392407 810 50478969 389 530582574 228 199722046 85 256258366 605 3721959
output:
22721419 27962190 85541228 53950260 35288938 100176945 86409840 102331663 55591445 14790745
result:
ok 10 lines
Test #16:
score: 0
Accepted
time: 650ms
memory: 17284kb
input:
10 445185474 268 687201814 929 296077349 690 202741564 372 661889855 442 989604795 367 456833096 702 862601129 795 37538865 556 131444040 108 645857776
output:
39577672 390323147 423333756 49417686 12978114 278291170 60346062 410583855 68429394 296833176
result:
ok 10 lines
Test #17:
score: 0
Accepted
time: 898ms
memory: 16404kb
input:
10 265384486 870 503808438 959 733458117 126 226376632 979 205878607 747 270352323 339 384431347 373 659485098 597 832514575 832 906898547 12 869891031
output:
54820154 83262107 48675762 32938269 169458409 153632065 105152812 48645927 29870948 83831862
result:
ok 10 lines
Test #18:
score: 0
Accepted
time: 631ms
memory: 17356kb
input:
10 869896294 256 326197921 496 115501273 861 238744067 581 600444623 619 536213251 89 898877607 136 353575223 860 349472278 491 770026371 668 622723560
output:
678111040 344947200 90686837 157367547 295943299 25262829 81930384 532341712 23048077 475131428
result:
ok 10 lines
Test #19:
score: -100
Time Limit Exceeded
input:
10 692092859 831 647975618 792 737778459 392 768554014 854 612888229 31 148093584 793 559010229 970 237393805 339 914914862 831 979073722 988 738224088
output:
324659472 16793498 421391172 416475848 59704753 347151224 415078841 680610884 397373492