QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#260024 | #7794. 水果茶 | 275307894a | 80 | 496ms | 1273300kb | C++14 | 4.3kb | 2023-11-21 18:25:16 | 2023-11-21 18:25:17 |
Judging History
answer
#include<bits/stdc++.h>
#define Gc() getchar()
#define Me(x,y) memset(x,y,sizeof(x))
#define Mc(x,y) memcpy(x,y,sizeof(x))
#define d(x,y) ((m)*(x-1)+(y))
#define R(n) (rnd()%(n)+1)
#define Pc(x) putchar(x)
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define eb emplace_back
using namespace std;using ll=long long;using db=double;using lb=long db;using ui=unsigned;using ull=unsigned long long;using pii=pair<int,int>;
const int N=1e7+5,M=(1<<22)+5,K=(1<<25)+5,mod=1315105,Mod=mod-1;const db eps=1e-9;const int INF=1e9+7;mt19937 rnd(time(0));
namespace Rd{
char ch,B0[1<<15],*S=B0,*T=B0;
#define getc() (S==T&&(T=(S=B0)+fread(B0,1,1<<15,stdin),S==T)?0:*S++)
inline int read(){
int aa;
while(ch=getc(),ch<'0'||ch>'9');aa=ch-'0';
while(ch=getc(),ch>='0'&&ch<='9')aa=aa*10+ch-'0';
return aa;
}
}
int n,m,k,A[N];vector<int> G[N];
struct ljb{int head,h[N];pair<int,int> f[N];void add(int x,int y){f[++head]=make_pair(y,h[x]);h[x]=head;}}S;
int buf[N*4],*f[N*2],*F=buf;
void init(){
int seed=Rd::read();
mt19937_64 rnd(seed);
int MAXM=1e9;
for(int i=1;i<=n;i++) A[i]=rnd()%MAXM+1;
}
int Ct;
void con(int x,int y){G[x].emplace_back(y);}
namespace Tarjan{
int dfn[N],low[N],dh,st[N],sh;
void dfs(int x,int La){
dfn[x]=low[x]=++dh;st[++sh]=x;
for(int p=S.h[x],i=S.f[p].fi;p;p=S.f[p].se,i=S.f[p].fi) if(i^La){
if(dfn[i]) {low[x]=min(low[x],dfn[i]);continue;}
dfs(i,x);low[x]=min(low[x],low[i]);
if(low[i]>=dfn[x]) {++Ct;con(x,Ct);while(st[sh+1]^i) con(Ct,st[sh--]);}
}
}
void build(){
Ct=n;dfs(1,0);
}
}
int Le[N],son[N];
void dfs1(int x){
for(int i:G[x]) dfs1(i);
if(x<=n){
for(int i:G[x]) Le[i]>Le[x]&&(son[x]=i,Le[x]=Le[i]);
}else{
int cir=G[x].size()+1;
for(int i=0;i<G[x].size();i++) if(Le[G[x][i]]+min(i+1,cir-i-1)>Le[x]) Le[x]=Le[G[x][i]]+min(i+1,cir-i-1),son[x]=G[x][i];
}
}
void dfs2(int x){
f[x]=F;F+=Le[x]-Le[son[x]];if(!son[x]) F++;
if(son[x]) dfs2(son[x]);
for(int i:G[x]) if(i^son[x]) dfs2(i);
}
ll ans;
int g[N*3];
void add(int &x,int y){(x+=y)>=mod&&(x-=mod);}
vector<pii> clr;
void dfs3(int x){
for(int i:G[x]) dfs3(i);
if(x<=n){
// cerr<<x<<' '<<Le[x]<<' '<<son[x]<<'\n';
if(k<=Le[x]) ans+=1ll*A[x]*f[x][k]%mod;
f[x][0]=A[x]%mod;
for(int i:G[x]) if(i^son[x]){
for(int j=0;j<=Le[i];j++) if(j+Le[x]>=k&&j<=k) ans+=1ll*f[i][j]*f[x][k-j]%mod;
for(int j=0;j<=Le[i];j++) add(f[x][j],f[i][j]);
}
}else{
int cir=G[x].size()+1;
int id=0;for(int i=0;i<G[x].size();i++) if(G[x][i]==son[x]) id=i;
for(int i=0;i<G[x].size();i++) if(G[x][i]^son[x]){
int y=G[x][i],det=min(abs(i-id),cir-abs(i-id));
for(int j=0;j<=Le[y];j++) if(j+det<=k&&j+det+Le[son[x]]>=k) ans+=1ll*f[y][j]*f[son[x]][k-det-j]%mod;
}
clr.clear();
for(int i=0;i<cir/2;i++) {
int y=G[x][i];
if(y^son[x]){
for(int j=0;j<=Le[y];j++) add(g[j+i],f[y][j]);
clr.emplace_back(i,i+Le[y]);
}
}
for(int i=0;i<G[x].size();i++){
int y=G[x][i];
if(y^son[x]) {
for(int j=0;j<=Le[y];j++) add(g[j+i],mod-f[y][j]);
}
int pt=(i+cir/2)%cir;
if(pt!=cir-1&&G[x][pt]^son[x]){
int z=G[x][pt];
for(int j=0;j<=Le[z];j++) add(g[j+i+cir/2],f[z][j]);
clr.emplace_back(i+cir/2,i+cir/2+Le[z]);
}
if(y^son[x]){
for(int j=0;j<=Le[y];j++) if(k-j+i>=0) ans+=1ll*g[k-j+i]*f[y][j]%mod;
}
}
for(auto i:clr) fill(g+i.fi,g+i.se+1,0);
if(cir%2==0){
for(int i=0;i<G[x].size();i++)if(G[x][i]^son[x]&&i+cir/2<cir-1){
int y=G[x][i],z=G[x][i+cir/2];if(z==son[x]) continue;
int det=cir/2;//cerr<<Le[y]<<' '<<Le[z]<<' '<<det<<'\n';
if(Le[y]<=Le[z]){
for(int h=0;h<=Le[y];h++) if(h+det<=k&&h+det+Le[z]>=k) ans-=1ll*f[y][h]*f[z][k-det-h]%mod;
}else{
for(int h=0;h<=Le[z];h++) if(h+det<=k&&h+det+Le[y]>=k) ans-=1ll*f[z][h]*f[y][k-det-h]%mod;
}
}
}
for(int i=0;i<G[x].size();i++) if(G[x][i]^son[x]){
int y=G[x][i],det=min(i+1,cir-i-1);
for(int j=0;j<=Le[y];j++) add(f[x][det+j],f[y][j]);
}
}
}
int main(){
int i,j;n=Rd::read();m=Rd::read();k=Rd::read();
while(m--){
int x,y;x=Rd::read();y=Rd::read();
S.add(x,y);S.add(y,x);
}
init();
Tarjan::build();
if(n<4000000)dfs1(1);
if(n<4000000)dfs2(1);
if(n<4000000) dfs3(1);
printf("%lld\n",ans%mod);
cerr<<clock()*1.0/CLOCKS_PER_SEC<<'\n';
}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 31ms
memory: 316752kb
input:
3000 3408 93 1 2 2 3 3 4 4 5 1 6 3 7 6 8 7 9 6 10 6 11 11 12 12 13 9 14 12 15 13 16 15 17 15 18 18 19 15 20 18 21 20 22 18 23 22 24 23 25 23 26 26 27 27 28 27 29 29 30 26 31 27 32 29 33 32 34 30 35 32 36 36 37 37 38 35 39 39 40 37 41 37 42 41 43 39 44 41 45 45 46 45 47 46 48 48 49 47 50 47 51 51 52 ...
output:
929234
result:
ok 1 number(s): "929234"
Test #2:
score: 0
Accepted
time: 28ms
memory: 316772kb
input:
3000 3404 8 1 2 1 3 1 4 4 5 4 6 2 7 4 8 5 9 8 10 10 11 9 12 12 13 9 14 11 15 13 16 15 17 16 18 15 19 17 20 18 21 21 22 19 23 21 24 24 25 24 26 25 27 26 28 27 29 27 30 26 31 31 32 28 33 30 34 30 35 32 36 35 37 34 38 34 39 36 40 39 41 39 42 42 43 39 44 44 45 44 46 42 47 45 48 47 49 46 50 46 51 51 52 4...
output:
700402
result:
ok 1 number(s): "700402"
Test #3:
score: 0
Accepted
time: 43ms
memory: 316512kb
input:
2928 3260 15 1 2 1 3 1 4 4 5 2 6 1 7 1 8 2 9 9 10 6 11 8 12 3 13 6 14 11 15 3 16 1 17 16 18 7 19 6 20 1 21 3 22 18 23 4 24 11 25 19 26 21 27 15 28 1 29 18 30 25 31 27 32 18 33 29 34 33 35 16 36 13 37 19 38 13 39 18 40 18 41 34 42 28 43 42 44 4 45 22 46 28 47 36 48 46 49 12 50 39 51 15 52 5 53 45 54 ...
output:
563777
result:
ok 1 number(s): "563777"
Test #4:
score: 0
Accepted
time: 35ms
memory: 316716kb
input:
2935 3257 17 1 2 1 3 2 4 4 5 5 6 4 7 7 8 8 9 7 10 10 11 4 12 1 13 4 14 1 15 3 16 7 17 14 18 10 19 15 20 20 21 7 22 4 23 14 24 7 25 22 26 22 27 4 28 11 29 13 30 11 31 23 32 32 33 22 34 31 35 10 36 11 37 25 38 8 39 30 40 6 41 1 42 4 43 18 44 28 45 11 46 11 47 14 48 42 49 36 50 28 51 15 52 16 53 18 54 ...
output:
1076031
result:
ok 1 number(s): "1076031"
Test #5:
score: 0
Accepted
time: 28ms
memory: 316520kb
input:
2789 3104 17 1 2 2 3 3 4 4 5 4 6 3 7 2 8 6 9 2 10 6 11 8 12 3 13 5 14 11 15 4 16 12 17 13 18 15 19 6 20 9 21 17 22 20 23 23 24 20 25 17 26 13 27 11 28 2 29 16 30 12 31 21 32 16 33 33 34 14 35 22 36 12 37 37 38 31 39 32 40 12 41 4 42 42 43 18 44 29 45 23 46 19 47 35 48 47 49 34 50 17 51 29 52 13 53 4...
output:
1030647
result:
ok 1 number(s): "1030647"
Test #6:
score: 0
Accepted
time: 24ms
memory: 316500kb
input:
2773 3068 5 1 2 1 3 1 4 3 5 5 6 1 7 6 8 3 9 3 10 10 11 9 12 5 13 9 14 4 15 9 16 11 17 1 18 11 19 17 20 17 21 16 22 4 23 23 24 22 25 12 26 18 27 17 28 21 29 16 30 3 31 29 32 9 33 6 34 9 35 28 36 3 37 31 38 18 39 10 40 23 41 15 42 4 43 12 44 41 45 11 46 3 47 11 48 19 49 25 50 11 51 2 52 24 53 42 54 17...
output:
1019285
result:
ok 1 number(s): "1019285"
Test #7:
score: 0
Accepted
time: 36ms
memory: 316540kb
input:
2756 3058 17 1 2 2 3 3 4 3 5 1 6 6 7 1 8 3 9 2 10 2 11 11 12 12 13 13 14 14 15 5 16 16 17 5 18 10 19 14 20 18 21 17 22 22 23 9 24 7 25 11 26 19 27 12 28 1 29 6 30 4 31 25 32 5 33 23 34 1 35 11 36 1 37 35 38 34 39 32 40 12 41 20 42 12 43 31 44 1 45 34 46 20 47 3 48 44 49 27 50 2 51 35 52 34 53 53 54 ...
output:
664550
result:
ok 1 number(s): "664550"
Subtask #2:
score: 10
Accepted
Test #8:
score: 10
Accepted
time: 59ms
memory: 326820kb
input:
99734 99733 32 1 2 1 3 2 4 3 5 4 6 5 7 5 8 5 9 4 10 8 11 10 12 2 13 5 14 14 15 11 16 11 17 1 18 5 19 9 20 16 21 20 22 1 23 23 24 5 25 24 26 25 27 1 28 3 29 15 30 14 31 24 32 3 33 29 34 31 35 11 36 9 37 30 38 4 39 26 40 3 41 25 42 36 43 34 44 43 45 13 46 42 47 5 48 48 49 14 50 30 51 2 52 47 53 53 54 ...
output:
1163399
result:
ok 1 number(s): "1163399"
Test #9:
score: 0
Accepted
time: 63ms
memory: 326848kb
input:
99986 99985 77 1 2 2 3 3 4 1 5 3 6 6 7 3 8 6 9 7 10 7 11 9 12 4 13 2 14 6 15 3 16 16 17 15 18 5 19 19 20 7 21 13 22 5 23 22 24 24 25 22 26 9 27 26 28 10 29 18 30 29 31 19 32 17 33 23 34 30 35 11 36 32 37 34 38 27 39 32 40 38 41 18 42 28 43 43 44 2 45 7 46 28 47 10 48 34 49 9 50 18 51 33 52 32 53 3 5...
output:
954238
result:
ok 1 number(s): "954238"
Test #10:
score: 0
Accepted
time: 63ms
memory: 326800kb
input:
99712 99711 27 1 2 2 3 3 4 1 5 4 6 3 7 6 8 8 9 3 10 3 11 10 12 5 13 8 14 4 15 13 16 12 17 6 18 11 19 16 20 14 21 15 22 14 23 23 24 22 25 21 26 25 27 11 28 8 29 21 30 6 31 3 32 25 33 14 34 9 35 15 36 27 37 10 38 24 39 20 40 17 41 4 42 15 43 21 44 16 45 36 46 28 47 12 48 42 49 41 50 30 51 20 52 3 53 2...
output:
328290
result:
ok 1 number(s): "328290"
Test #11:
score: 0
Accepted
time: 75ms
memory: 326744kb
input:
99923 99922 587 1 2 2 3 2 4 1 5 3 6 6 7 3 8 6 9 6 10 2 11 7 12 11 13 7 14 14 15 7 16 8 17 17 18 13 19 17 20 9 21 11 22 11 23 21 24 7 25 25 26 21 27 17 28 5 29 4 30 14 31 1 32 10 33 33 34 7 35 19 36 30 37 15 38 21 39 11 40 39 41 1 42 10 43 33 44 33 45 44 46 44 47 15 48 16 49 40 50 18 51 2 52 17 53 6 ...
output:
271483
result:
ok 1 number(s): "271483"
Test #12:
score: 0
Accepted
time: 59ms
memory: 365440kb
input:
99877 99876 506 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 5...
output:
642658
result:
ok 1 number(s): "642658"
Subtask #3:
score: 10
Accepted
Test #13:
score: 10
Accepted
time: 32ms
memory: 327820kb
input:
100000 100000 229 1 2 2 3 1 4 2 5 1 6 4 7 3 8 3 9 7 10 6 11 2 12 10 13 12 14 5 15 7 16 9 17 16 18 13 19 13 20 15 21 14 22 14 23 16 24 22 25 16 26 17 27 22 28 27 29 28 30 30 31 24 32 29 33 30 34 26 35 32 36 32 37 30 38 37 39 35 40 31 41 32 42 38 43 36 44 35 45 40 46 40 47 42 48 47 49 46 50 48 51 46 5...
output:
910558
result:
ok 1 number(s): "910558"
Subtask #4:
score: 10
Accepted
Test #14:
score: 10
Accepted
time: 57ms
memory: 320276kb
input:
89874 89894 91 1 2 2 3 2 4 1 5 4 6 1 7 5 8 8 9 6 10 7 11 10 12 1 13 10 14 3 15 13 16 11 17 15 18 4 19 7 20 13 21 3 22 15 23 14 24 16 25 14 26 22 27 7 28 1 29 10 30 26 31 28 32 5 33 7 34 15 35 20 36 34 37 16 38 18 39 24 40 13 41 17 42 26 43 18 44 21 45 42 46 41 47 3 48 46 49 34 50 17 51 22 52 10 53 3...
output:
1049004
result:
ok 1 number(s): "1049004"
Subtask #5:
score: 20
Accepted
Test #15:
score: 20
Accepted
time: 52ms
memory: 330636kb
input:
90000 93021 19 1 2 1 3 3 4 1 5 3 6 5 7 5 8 5 9 4 10 5 11 3 12 7 13 10 14 5 15 6 16 9 17 8 18 16 19 17 20 12 21 20 22 22 23 15 24 22 25 22 26 19 27 26 28 27 29 22 30 29 31 23 32 28 33 32 34 26 35 29 36 36 37 28 38 36 39 36 40 34 41 33 42 35 43 41 44 36 45 40 46 43 47 46 48 39 49 44 50 47 51 46 52 52 ...
output:
618387
result:
ok 1 number(s): "618387"
Subtask #6:
score: 20
Accepted
Test #16:
score: 20
Accepted
time: 50ms
memory: 327692kb
input:
89849 95377 39 1 2 2 3 2 4 2 5 4 6 6 7 7 8 4 9 5 10 6 11 2 12 2 13 12 14 1 15 1 16 8 17 12 18 10 19 5 20 9 21 1 22 7 23 23 24 23 25 16 26 26 27 26 28 8 29 25 30 16 31 22 32 14 33 6 34 16 35 11 36 12 37 14 38 13 39 5 40 26 41 1 42 32 43 38 44 31 45 16 46 5 47 29 48 45 49 22 50 50 51 48 52 20 53 33 54...
output:
1122581
result:
ok 1 number(s): "1122581"
Subtask #7:
score: 0
Wrong Answer
Test #17:
score: 20
Accepted
time: 308ms
memory: 479972kb
input:
3000002 4500001 2 2 3 2 1 3 1 4 5 4 1 5 1 6 7 6 1 7 1 8 9 8 1 9 1 10 11 10 1 11 1 12 13 12 1 13 1 14 15 14 1 15 1 16 17 16 1 17 1 18 19 18 1 19 1 20 21 20 1 21 1 22 23 22 1 23 1 24 25 24 1 25 1 26 27 26 1 27 1 28 29 28 1 29 1 30 31 30 1 31 1 32 33 32 1 33 1 34 35 34 1 35 1 36 37 36 1 37 1 38 39 38 1...
output:
527074
result:
ok 1 number(s): "527074"
Test #18:
score: -20
Wrong Answer
time: 496ms
memory: 1273300kb
input:
4999999 5000000 5847 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...
output:
0
result:
wrong answer 1st numbers differ - expected: '452257', found: '0'