QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#659888 | #9488. Do Not Turn Back | ucup-team134# | AC ✓ | 795ms | 4584kb | C++17 | 1.8kb | 2024-10-19 23:02:42 | 2024-10-19 23:02:43 |
Judging History
answer
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define f first
#define s second
#define sz(x) (int)(x).size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define ios ios_base::sync_with_stdio(false);cin.tie(NULL)
#define ld long double
#define li __int128
using namespace std;
mt19937 rng(time(NULL));
const int mod=998244353;
int add(int a,int b){
a+=b;
if(a>=mod)
a-=mod;
return a;
}
int sub(int a,int b){
a-=b;
if(a<0)
a+=mod;
return a;
}
int mul(int a,int b){
return (long long)a*b%mod;
}
vector<vector<int>> mul(vector<vector<int>> &a,vector<vector<int>> &b){
vector<vector<int>> ans(sz(a),vector<int>(sz(b[0])));
for(int i=0;i<sz(a);i++){
for(int j=0;j<sz(b[0]);j++){
for(int k=0;k<sz(a[0]);k++){
ans[i][j]=add(ans[i][j],mul(a[i][k],b[k][j]));
}
}
}
return ans;
}
vector<vector<int>> pwrmod(vector<vector<int>> a,int k){
vector<vector<int>> ans=a;
k--;
for(;k;k>>=1,a=mul(a,a))
if(k&1)
ans=mul(ans,a);
return ans;
}
int main()
{
int n,m,k;
cin >> n >> m >> k;
vector<vector<int>> mat(2*n,vector<int>(2*n));
vector<vector<int>> start(1,vector<int>(2*n));
vector<int> deg(n);
vector<vector<int>> graf(n);
for(int i=0;i<m;i++){
int u,v;
cin >> u >> v;
u--;v--;
mat[u][v]=mat[v][u]=1;
deg[u]++;
deg[v]++;
graf[u].pb(v);
graf[v].pb(u);
}
for(int i=0;i<n;i++){
mat[i][i+n]=1;
mat[i+n][i]=mod-deg[i]+1;
}
for(auto p:graf[0]){
start[0][n+p]=1;
}
for(auto p:graf[0]){
for(auto d:graf[p]){
start[0][d]++;
}
}
start[0][0]=0;
k--;
if(k==0){
printf("%i\n",start[0][n+n-1]);
return 0;
}
vector<vector<int>> st=pwrmod(mat,k);
start=mul(start,st);
printf("%i\n",start[0][n+n-1]);
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3776kb
input:
6 8 5 1 2 1 3 2 3 2 4 3 5 4 5 4 6 5 6
output:
2
result:
ok "2"
Test #2:
score: 0
Accepted
time: 1ms
memory: 3880kb
input:
11 11 2023 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 1 11
output:
1
result:
ok "1"
Test #3:
score: 0
Accepted
time: 1ms
memory: 3772kb
input:
7 21 1000000000 1 2 1 3 1 4 1 5 1 6 1 7 2 3 2 4 2 5 2 6 2 7 3 4 3 5 3 6 3 7 4 5 4 6 4 7 5 6 5 7 6 7
output:
405422475
result:
ok "405422475"
Test #4:
score: 0
Accepted
time: 1ms
memory: 3884kb
input:
12 56 78144853 1 2 1 3 1 4 1 6 1 7 1 9 1 10 1 11 1 12 2 4 2 5 2 6 2 8 2 9 2 10 2 11 2 12 3 4 3 5 3 6 3 7 3 8 3 9 3 11 3 12 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 12 5 6 5 7 5 8 5 9 5 10 5 11 5 12 6 8 6 9 6 10 7 8 7 9 7 11 7 12 8 9 8 10 8 11 8 12 9 10 9 11 9 12 10 11 11 12
output:
843326021
result:
ok "843326021"
Test #5:
score: 0
Accepted
time: 2ms
memory: 3856kb
input:
13 61 268435455 1 2 1 3 1 4 1 5 1 6 1 8 1 9 1 10 1 11 1 12 1 13 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 12 2 13 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 6 4 7 4 9 4 12 4 13 5 6 5 7 5 9 5 11 5 13 6 7 6 8 6 9 6 11 6 12 6 13 7 8 7 10 7 11 7 12 8 9 8 10 8 11 8 12 8 13 9 10 9 12 9 13 10 11 10 12 10 13 11 12 11 13 12 13
output:
69651169
result:
ok "69651169"
Test #6:
score: 0
Accepted
time: 0ms
memory: 4064kb
input:
14 79 33554431 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 2 3 2 4 2 5 2 6 2 7 2 8 2 11 2 12 2 14 3 5 3 6 3 7 3 8 3 9 3 10 3 11 3 12 3 13 3 14 4 5 4 6 4 7 4 8 4 9 4 11 4 12 5 6 5 7 5 10 5 11 5 12 5 13 5 14 6 7 6 8 6 9 6 10 6 11 6 12 6 13 6 14 7 8 7 9 7 10 7 11 7 12 7 13 7 14 8 10 8 11 8...
output:
793621538
result:
ok "793621538"
Test #7:
score: 0
Accepted
time: 2ms
memory: 3860kb
input:
15 92 439487671 1 2 1 3 1 5 1 7 1 8 1 9 1 10 1 11 1 13 1 14 1 15 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2 12 2 13 2 14 2 15 3 4 3 5 3 6 3 7 3 8 3 9 3 10 3 11 3 12 3 13 3 14 3 15 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 12 4 13 4 14 4 15 5 7 5 8 5 10 5 11 5 12 5 13 5 14 6 7 6 8 6 9 6 10 6 11 6 12 6 13 6 14 6 1...
output:
196201187
result:
ok "196201187"
Test #8:
score: 0
Accepted
time: 1ms
memory: 3844kb
input:
5 10 230391930 1 2 1 3 1 4 1 5 2 3 2 4 2 5 3 4 3 5 4 5
output:
552614127
result:
ok "552614127"
Test #9:
score: 0
Accepted
time: 0ms
memory: 3872kb
input:
5 8 268435455 1 2 1 3 1 4 2 3 2 4 2 5 3 4 4 5
output:
666456772
result:
ok "666456772"
Test #10:
score: 0
Accepted
time: 1ms
memory: 3872kb
input:
6 13 67108863 1 2 1 3 1 4 1 5 2 4 2 5 2 6 3 4 3 5 3 6 4 5 4 6 5 6
output:
317571510
result:
ok "317571510"
Test #11:
score: 0
Accepted
time: 1ms
memory: 3824kb
input:
7 18 67108863 1 2 1 3 1 4 1 5 1 6 1 7 2 3 2 4 2 5 2 6 2 7 3 5 3 6 4 5 4 6 4 7 5 6 6 7
output:
921436359
result:
ok "921436359"
Test #12:
score: 0
Accepted
time: 0ms
memory: 3732kb
input:
11 43 115349891 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 2 3 2 6 2 7 2 8 2 9 2 11 3 4 3 5 3 8 3 9 3 10 4 5 4 6 4 7 4 8 4 9 4 11 5 6 5 7 5 9 5 10 5 11 6 7 6 9 6 10 6 11 7 8 7 9 7 10 7 11 8 9 8 11 9 10 9 11
output:
853336717
result:
ok "853336717"
Test #13:
score: 0
Accepted
time: 2ms
memory: 3892kb
input:
14 78 758166229 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 2 3 2 4 2 5 2 6 2 7 2 8 2 10 2 11 2 14 3 5 3 6 3 7 3 8 3 9 3 10 3 11 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 13 4 14 5 6 5 7 5 8 5 9 5 10 5 11 5 13 5 14 6 7 6 8 6 9 6 10 6 11 6 12 6 14 7 8 7 9 7 10 7 11 7 12 7 13 7 14 8 9 8 10 8 11 8 1...
output:
949739691
result:
ok "949739691"
Test #14:
score: 0
Accepted
time: 81ms
memory: 4224kb
input:
52 51 376665160 1 2 1 3 2 4 4 5 5 6 5 7 3 8 5 9 5 10 5 11 6 12 4 13 2 14 6 15 14 16 9 17 8 18 15 19 11 20 9 21 1 22 21 23 3 24 24 25 24 26 10 27 7 28 24 29 16 30 6 31 4 32 5 33 10 34 33 35 32 36 19 37 29 38 18 39 17 40 13 41 39 42 3 43 12 44 34 45 20 46 38 47 27 48 43 49 5 50 6 51 4 52
output:
0
result:
ok "0"
Test #15:
score: 0
Accepted
time: 1ms
memory: 3828kb
input:
29 28 4 1 2 1 3 2 4 1 5 3 6 3 7 6 8 4 9 3 10 6 11 10 12 4 13 3 14 9 15 6 16 14 17 16 18 11 19 19 20 8 21 6 22 18 23 18 24 3 25 2 26 8 27 1 28 8 29
output:
1
result:
ok "1"
Test #16:
score: 0
Accepted
time: 663ms
memory: 4340kb
input:
99 98 33554431 46 94 29 46 29 75 50 75 50 61 6 61 6 10 10 49 38 49 38 86 37 86 37 66 31 66 31 71 41 71 41 67 22 67 22 52 52 62 62 74 74 89 53 89 53 91 69 91 40 69 40 97 45 97 9 45 9 18 18 23 23 25 25 43 43 92 3 92 3 5 5 28 28 58 19 58 17 19 17 80 4 80 4 56 24 56 21 24 1 21 1 95 51 95 36 51 36 96 20 ...
output:
0
result:
ok "0"
Test #17:
score: 0
Accepted
time: 1ms
memory: 4172kb
input:
98 97 2 1 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 17 2 18 2 19 2 20 2 21 2 22 2 23 2 24 2 25 2 26 2 27 2 28 2 29 2 30 2 31 2 32 2 33 2 34 2 35 2 36 2 37 2 38 2 39 2 40 2 41 2 42 2 43 2 44 2 45 2 46 2 47 2 48 2 49 2 50 2 51 2 52 2 53 2 54 2 55 2 56 2 57 2 58 2 59 2 60 2 61 ...
output:
1
result:
ok "1"
Test #18:
score: 0
Accepted
time: 432ms
memory: 4584kb
input:
91 91 68838384 35 46 29 46 29 75 50 75 50 61 6 61 6 10 10 49 38 49 38 86 37 86 37 66 31 66 31 71 41 71 41 67 22 67 22 52 52 62 62 74 74 89 53 89 53 91 69 91 40 69 40 79 45 79 9 45 9 18 18 23 23 25 25 43 12 43 3 12 3 5 5 28 28 58 19 58 17 19 17 80 4 80 4 56 24 56 21 24 1 21 1 64 51 64 36 51 36 47 20 ...
output:
1
result:
ok "1"
Test #19:
score: 0
Accepted
time: 495ms
memory: 4384kb
input:
92 92 860263916 30 45 45 60 60 66 66 78 15 78 9 15 9 14 14 35 35 37 37 85 24 85 24 65 64 65 10 64 10 53 32 53 22 32 22 51 51 80 80 92 77 92 43 77 33 43 33 39 39 82 6 82 2 6 2 88 40 88 40 58 25 58 25 72 72 91 7 91 7 8 8 57 48 57 21 48 21 68 68 79 55 79 12 55 12 38 1 38 1 90 63 90 13 63 13 44 44 54 47...
output:
1
result:
ok "1"
Test #20:
score: 0
Accepted
time: 458ms
memory: 4512kb
input:
91 4095 412854823 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59 ...
output:
309435713
result:
ok "309435713"
Test #21:
score: 0
Accepted
time: 560ms
memory: 4368kb
input:
92 4186 67108863 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59 1...
output:
445773689
result:
ok "445773689"
Test #22:
score: 0
Accepted
time: 633ms
memory: 4400kb
input:
93 4278 536870911 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59 ...
output:
664971360
result:
ok "664971360"
Test #23:
score: 0
Accepted
time: 629ms
memory: 4392kb
input:
94 4371 531304381 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59 ...
output:
33852961
result:
ok "33852961"
Test #24:
score: 0
Accepted
time: 1ms
memory: 3856kb
input:
10 38 187055368 1 2 1 3 1 5 1 6 1 8 1 9 1 10 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 5 4 6 4 7 4 8 4 9 5 7 5 8 5 9 5 10 6 7 6 8 6 9 6 10 7 8 7 10 8 10
output:
174346166
result:
ok "174346166"
Test #25:
score: 0
Accepted
time: 18ms
memory: 3860kb
input:
31 395 508956048 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 12 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 23 1 24 1 25 1 26 1 27 1 28 1 30 1 31 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2 12 2 13 2 14 2 16 2 17 2 18 2 19 2 20 2 22 2 23 2 24 2 25 2 26 2 27 2 28 2 29 2 30 2 31 3 4 3 5 3 7 3 8 3 9 3 10 3 11 3 1...
output:
898454226
result:
ok "898454226"
Test #26:
score: 0
Accepted
time: 52ms
memory: 4180kb
input:
46 843 103688348 1 2 1 3 1 4 1 5 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 33 1 34 1 35 1 36 1 37 1 38 1 41 1 42 1 43 1 44 1 45 2 3 2 4 2 5 2 6 2 7 2 9 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 18 2 19 2 20 2 22 2 23 2 26 2...
output:
804037438
result:
ok "804037438"
Test #27:
score: 0
Accepted
time: 426ms
memory: 4248kb
input:
81 2612 536870911 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 21 1 22 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 49 1 50 1 51 1 52 1 53 1 55 1 56 1 57 1 58 1 59 1 60 1 61 1 63 1 64 1 65 ...
output:
439960927
result:
ok "439960927"
Test #28:
score: 0
Accepted
time: 694ms
memory: 4448kb
input:
98 3845 134217727 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 13 1 15 1 16 1 17 1 18 1 20 1 21 1 22 1 23 1 24 1 26 1 27 1 30 1 32 1 33 1 34 1 35 1 38 1 40 1 41 1 42 1 44 1 45 1 46 1 48 1 49 1 50 1 51 1 52 1 53 1 56 1 57 1 58 1 59 1 60 1 61 1 62 1 63 1 64 1 65 1 66 1 67 1 68 1 69 1 71 1 72 1 74 1 75 ...
output:
687576024
result:
ok "687576024"
Test #29:
score: 0
Accepted
time: 33ms
memory: 3876kb
input:
38 559 33554431 1 2 1 3 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 14 1 15 1 16 1 18 1 20 1 21 1 23 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 38 2 4 2 5 2 6 2 8 2 9 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 18 2 19 2 20 2 21 2 22 2 24 2 25 2 26 2 28 2 29 2 30 2 31 2 32 2 34 3 4 3 5 3 6 3 7 3 8 3 9 3...
output:
245031029
result:
ok "245031029"
Test #30:
score: 0
Accepted
time: 116ms
memory: 4052kb
input:
53 1106 268435455 1 2 1 3 1 4 1 5 1 6 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 2 3 2 4 2 5 2 6 2 7 2 9 2 10 2 11 2 13 2 14 ...
output:
437352844
result:
ok "437352844"
Test #31:
score: 0
Accepted
time: 50ms
memory: 3916kb
input:
43 725 710015779 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 14 1 15 1 16 1 18 1 19 1 20 1 23 1 24 1 26 1 27 1 28 1 29 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 39 1 40 1 41 1 42 1 43 2 3 2 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2 13 2 14 2 15 2 16 2 17 2 18 2 19 2 20 2 21 2 23 2 24 2 26 2 27 2 29 2 32 2 3...
output:
287707534
result:
ok "287707534"
Test #32:
score: 0
Accepted
time: 197ms
memory: 4160kb
input:
66 1737 67108863 1 2 1 3 1 5 1 6 1 7 1 8 1 9 1 10 1 12 1 13 1 15 1 16 1 17 1 18 1 21 1 22 1 23 1 24 1 25 1 26 1 31 1 32 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 45 1 46 1 47 1 49 1 50 1 51 1 53 1 54 1 55 1 56 1 57 1 58 1 59 1 60 1 61 1 62 1 63 1 64 1 66 2 4 2 5 2 6 2 7 2 8 2 9 2 10 2 11 2...
output:
655903832
result:
ok "655903832"
Test #33:
score: 0
Accepted
time: 17ms
memory: 3792kb
input:
29 327 815825607 1 2 1 3 1 4 1 5 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 18 1 19 1 20 1 21 1 23 1 24 1 25 1 26 1 27 1 28 1 29 2 3 2 5 2 6 2 7 2 8 2 9 2 10 2 12 2 13 2 14 2 15 2 16 2 17 2 18 2 19 2 21 2 23 2 24 2 25 2 26 2 27 2 28 2 29 3 4 3 6 3 7 3 9 3 10 3 11 3 12 3 13 3 15 3 16 3 17 3 18 3 20 ...
output:
3611745
result:
ok "3611745"
Test #34:
score: 0
Accepted
time: 795ms
memory: 4460kb
input:
100 4950 536870911 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59...
output:
77654284
result:
ok "77654284"
Test #35:
score: 0
Accepted
time: 792ms
memory: 4448kb
input:
100 3962 536870911 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 12 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 35 1 36 1 37 1 38 1 39 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 51 1 53 1 54 1 55 1 56 1 57 1 58 1 60 1 61 1 62 1 63 1 64 1 65 1 67...
output:
277610741
result:
ok "277610741"
Test #36:
score: 0
Accepted
time: 768ms
memory: 4404kb
input:
99 3919 536870911 1 2 1 3 1 4 1 5 1 7 1 9 1 10 1 11 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 23 1 24 1 25 1 27 1 28 1 29 1 32 1 33 1 34 1 36 1 37 1 38 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 56 1 57 1 58 1 59 1 60 1 62 1 63 1 64 1 65 1 66 1 67 1 68 1 70 1 7...
output:
377999899
result:
ok "377999899"
Extra Test:
score: 0
Extra Test Passed