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
#887076#9782. NonZero PrefSuf Sumsdiandian2020AC ✓59ms17584kbC++142.1kb2025-02-07 14:45:272025-02-07 14:45:27

Judging History

This is the latest submission verdict.

  • [2025-02-07 14:45:27]
  • Judged
  • Verdict: AC
  • Time: 59ms
  • Memory: 17584kb
  • [2025-02-07 14:45:27]
  • Submitted

answer

#include<cstdio>
#include<vector>
#include<cstring>
#include<numeric>
#include<iostream>
#include<algorithm>
#define fi first
#define se second
using namespace std;
typedef long long LL;
typedef pair<int,int> PII;
const int N=109,D=N*N;
int n,m,P,f[N][N*N*2],s[N*N*2];
int g[N][N][N],fac[N],inv[N];
int qmi(int a,int b){
	int res=1;
	while(b){
		if(b&1) res=(LL)res*a%P;
		a=(LL)a*a%P;
		b>>=1;
	}
	return res;
}
void init(int n){
	for(int i=fac[0]=1;i<=n;i++) fac[i]=(LL)fac[i-1]*i%P;
	inv[n]=qmi(fac[n],P-2);
	for(int i=n;i;i--) inv[i-1]=(LL)inv[i]*i%P;
}
void upd(int &a,int b){
	(a+=b)>=P&&(a-=P);
}
namespace BF{
	int a[N],p[N],b[N];
	void dfs(int u,int pre){
		if(u==n+1){
			if(accumulate(a+1,a+1+n,0)<=0) return;
			for(int i=1;i<=n;i++) p[i]=i;
			do{
				for(int i=1;i<=n;i++) b[i]=a[p[i]];
				bool flg=1;
				for(int i=1,s=0;i<=n&&flg;i++){
					s+=b[i];
					if(!s) flg=0;
				}
				for(int i=n,s=0;i&&flg;i--){
					s+=b[i];
					if(!s) flg=0;
				}
				if(flg) return;
			}while(next_permutation(p+1,p+1+n));
			for(int i=1;i<=n;i++) printf("%d ",a[i]); puts("");
			return;
		}
		for(int i=pre;i<=m;i++) dfs(u+1,a[u]=i);
	}
	void solve(){
		dfs(1,-m);
	}
}
int main(){
	scanf("%d%d%d",&n,&m,&P); //BF::solve();
	init(N-1);
	if(n==1) return printf("%d\n",2*m),0;
	g[0][0][0]=1;
	for(int i=1;i<=m;i++) for(int a=0;a<=n;a++) for(int j=0;j<=n;j++) for(int c=0;a+c<=n&&j+i*c<=n;c++) g[i][a+c][j+i*c]=(g[i][a+c][j+i*c]+(LL)g[i-1][a][j]*inv[c])%P;
	int res=0;
	for(int a=1;a<=m;a++){
		int lmt=m/a;
		upd(res,n);
		for(int mx=1;mx<=lmt;mx++) for(int a=1;a<=n;a++) for(int j=1;j<=n;j++){
			int cnt=(g[mx][a][j]-g[mx-1][a][j]+P)%P;
			if(!cnt) continue;
			for(int y=j+1;y+a<=n&&y<=j+mx+1;y++) res=(res+(LL)fac[n]*cnt%P*inv[y]%P*inv[n-y-a])%P;
		}
	}
//	printf("res = %d\n",res);
	f[0][D]=1;
	for(int i=1;i<=n;i++){
		for(int j=-(i+1)*m-1;j<=(i+1)*m+1;j++) s[j+D]=f[i-1][j+D],upd(s[j+D],s[j+D-1]);
		for(int j=-i*m;j<=i*m;j++) f[i][j+D]=s[j+D+m],upd(f[i][j+D],P-s[j+D-m-1]);
	}
//	printf("f[n][D] = %d\n",f[n][D]);
	res=(res*2LL+f[n][D])%P;
	printf("%d\n",(qmi(2*m+1,n)-res+P)%P);
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 5964kb

input:

2 1 998244353

output:

2

result:

ok single line: '2'

Test #2:

score: 0
Accepted
time: 10ms
memory: 13380kb

input:

69 42 696969697

output:

378553557

result:

ok single line: '378553557'

Test #3:

score: 0
Accepted
time: 0ms
memory: 5964kb

input:

2 1 998244353

output:

2

result:

ok single line: '2'

Test #4:

score: 0
Accepted
time: 9ms
memory: 13532kb

input:

69 42 696969697

output:

378553557

result:

ok single line: '378553557'

Test #5:

score: 0
Accepted
time: 12ms
memory: 14372kb

input:

61 75 677323601

output:

34613998

result:

ok single line: '34613998'

Test #6:

score: 0
Accepted
time: 1ms
memory: 6096kb

input:

13 14 670577333

output:

41465431

result:

ok single line: '41465431'

Test #7:

score: 0
Accepted
time: 0ms
memory: 6020kb

input:

14 6 987686347

output:

37536510

result:

ok single line: '37536510'

Test #8:

score: 0
Accepted
time: 1ms
memory: 8140kb

input:

15 12 196428923

output:

29322522

result:

ok single line: '29322522'

Test #9:

score: 0
Accepted
time: 1ms
memory: 12348kb

input:

68 7 786815587

output:

149281835

result:

ok single line: '149281835'

Test #10:

score: 0
Accepted
time: 0ms
memory: 5980kb

input:

3 2 503002109

output:

82

result:

ok single line: '82'

Test #11:

score: 0
Accepted
time: 0ms
memory: 8004kb

input:

13 5 756093197

output:

415698676

result:

ok single line: '415698676'

Test #12:

score: 0
Accepted
time: 0ms
memory: 5976kb

input:

2 3 646574611

output:

30

result:

ok single line: '30'

Test #13:

score: 0
Accepted
time: 6ms
memory: 11276kb

input:

39 68 120037189

output:

43217507

result:

ok single line: '43217507'

Test #14:

score: 0
Accepted
time: 0ms
memory: 5988kb

input:

13 4 423132517

output:

360231790

result:

ok single line: '360231790'

Test #15:

score: 0
Accepted
time: 0ms
memory: 7808kb

input:

14 3 309713387

output:

94215386

result:

ok single line: '94215386'

Test #16:

score: 0
Accepted
time: 1ms
memory: 9108kb

input:

24 77 886983941

output:

211636479

result:

ok single line: '211636479'

Test #17:

score: 0
Accepted
time: 0ms
memory: 5980kb

input:

3 3 504388063

output:

270

result:

ok single line: '270'

Test #18:

score: 0
Accepted
time: 0ms
memory: 5968kb

input:

3 1 936205423

output:

8

result:

ok single line: '8'

Test #19:

score: 0
Accepted
time: 0ms
memory: 5984kb

input:

3 3 295983139

output:

270

result:

ok single line: '270'

Test #20:

score: 0
Accepted
time: 1ms
memory: 8140kb

input:

10 15 446169107

output:

149884328

result:

ok single line: '149884328'

Test #21:

score: 0
Accepted
time: 2ms
memory: 10416kb

input:

37 18 833753929

output:

592917251

result:

ok single line: '592917251'

Test #22:

score: 0
Accepted
time: 0ms
memory: 8036kb

input:

11 3 998773403

output:

860630017

result:

ok single line: '860630017'

Test #23:

score: 0
Accepted
time: 0ms
memory: 6820kb

input:

14 85 688036639

output:

347188409

result:

ok single line: '347188409'

Test #24:

score: 0
Accepted
time: 0ms
memory: 5984kb

input:

3 3 844621907

output:

270

result:

ok single line: '270'

Test #25:

score: 0
Accepted
time: 0ms
memory: 5984kb

input:

3 4 204335891

output:

620

result:

ok single line: '620'

Test #26:

score: 0
Accepted
time: 0ms
memory: 6024kb

input:

7 8 113007667

output:

58946097

result:

ok single line: '58946097'

Test #27:

score: 0
Accepted
time: 0ms
memory: 5968kb

input:

4 1 637268377

output:

22

result:

ok single line: '22'

Test #28:

score: 0
Accepted
time: 0ms
memory: 8132kb

input:

11 14 391637237

output:

303270280

result:

ok single line: '303270280'

Test #29:

score: 0
Accepted
time: 0ms
memory: 5980kb

input:

3 2 208286231

output:

82

result:

ok single line: '82'

Test #30:

score: 0
Accepted
time: 1ms
memory: 6012kb

input:

2 11 662696483

output:

462

result:

ok single line: '462'

Test #31:

score: 0
Accepted
time: 1ms
memory: 8684kb

input:

19 55 974135299

output:

887460557

result:

ok single line: '887460557'

Test #32:

score: 0
Accepted
time: 1ms
memory: 6024kb

input:

6 8 417027509

output:

23351024

result:

ok single line: '23351024'

Test #33:

score: 0
Accepted
time: 0ms
memory: 8120kb

input:

8 13 624006587

output:

353008442

result:

ok single line: '353008442'

Test #34:

score: 0
Accepted
time: 0ms
memory: 8096kb

input:

10 10 740294671

output:

79436611

result:

ok single line: '79436611'

Test #35:

score: 0
Accepted
time: 0ms
memory: 6056kb

input:

11 10 394088657

output:

161476458

result:

ok single line: '161476458'

Test #36:

score: 0
Accepted
time: 1ms
memory: 8220kb

input:

9 27 562853573

output:

135252259

result:

ok single line: '135252259'

Test #37:

score: 0
Accepted
time: 0ms
memory: 8040kb

input:

8 3 829129009

output:

5349034

result:

ok single line: '5349034'

Test #38:

score: 0
Accepted
time: 5ms
memory: 11328kb

input:

51 49 924010279

output:

815049368

result:

ok single line: '815049368'

Test #39:

score: 0
Accepted
time: 0ms
memory: 8032kb

input:

12 2 308466749

output:

223013998

result:

ok single line: '223013998'

Test #40:

score: 0
Accepted
time: 0ms
memory: 5924kb

input:

7 4 567557693

output:

4502296

result:

ok single line: '4502296'

Test #41:

score: 0
Accepted
time: 3ms
memory: 9868kb

input:

36 93 943780729

output:

13599465

result:

ok single line: '13599465'

Test #42:

score: 0
Accepted
time: 0ms
memory: 5828kb

input:

2 1 828681127

output:

2

result:

ok single line: '2'

Test #43:

score: 0
Accepted
time: 0ms
memory: 5980kb

input:

3 3 534160729

output:

270

result:

ok single line: '270'

Test #44:

score: 0
Accepted
time: 0ms
memory: 8080kb

input:

7 12 920925433

output:

453086694

result:

ok single line: '453086694'

Test #45:

score: 0
Accepted
time: 0ms
memory: 5980kb

input:

3 2 440546987

output:

82

result:

ok single line: '82'

Test #46:

score: 0
Accepted
time: 2ms
memory: 14544kb

input:

90 9 291269963

output:

72560304

result:

ok single line: '72560304'

Test #47:

score: 0
Accepted
time: 1ms
memory: 8216kb

input:

38 10 867575113

output:

165530481

result:

ok single line: '165530481'

Test #48:

score: 0
Accepted
time: 3ms
memory: 10968kb

input:

48 37 152663531

output:

135425620

result:

ok single line: '135425620'

Test #49:

score: 0
Accepted
time: 0ms
memory: 6120kb

input:

15 15 991731803

output:

102703562

result:

ok single line: '102703562'

Test #50:

score: 0
Accepted
time: 59ms
memory: 17584kb

input:

100 100 696969697

output:

313377809

result:

ok single line: '313377809'

Extra Test:

score: 0
Extra Test Passed