QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#207817 | #7177. Many Many Cycles | kkio | WA | 2ms | 12284kb | C++17 | 1.1kb | 2023-10-08 20:57:17 | 2023-10-08 20:57:18 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
mt19937_64 rnd(1232901232);
const int maxn=2e5+10;
int n,m,vis[maxn],faw[maxn];
vector< pair<int,int> > G[maxn];
ull valt[maxn];
map<ull,ll> mp;
ll ans,dis[maxn];
void dfs(int u,int fa)
{
vis[u]=1;
for(auto [v,w]:G[u])
if(v!=fa)
{
if(!vis[v])
{
dis[v]=dis[u]+w;
faw[v]=w;
dfs(v,u);
valt[u]^=valt[v];
}
else if(dis[v]<dis[u]){
ull V=rnd();
mp[V]+=w;
ans=gcd(ans,dis[u]-dis[v]+w);
valt[u]^=V;
valt[v]^=V;
}
}
//printf("%d %llu\n",u,valt[u]);
mp[valt[u]]+=faw[u];
}
int main()
{
scanf("%d%d",&n,&m);
for(int i=1;i<=m;i++)
{
int u,v,w;
scanf("%d%d%d",&u,&v,&w);
G[u].push_back({v,w});
G[v].push_back({u,w});
}
for(int i=1;i<=n;i++)if(!vis[i])dfs(i,0);
for(auto [V,w]:mp)ans=gcd(ans,w*2);
printf("%lld\n",ans);
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 12076kb
input:
4 4 1 2 1 2 3 1 3 4 1 4 1 1
output:
4
result:
ok answer is '4'
Test #2:
score: 0
Accepted
time: 0ms
memory: 10456kb
input:
4 5 1 2 1 1 3 2 1 4 1 2 3 1 3 4 1
output:
4
result:
ok answer is '4'
Test #3:
score: 0
Accepted
time: 2ms
memory: 12128kb
input:
20 50 1 2 8 1 3 1 3 4 5 3 5 9 3 6 5 6 7 6 7 8 8 2 9 2 8 10 3 8 11 7 8 12 5 3 13 4 7 14 3 6 15 7 9 16 6 8 17 7 16 18 9 16 19 3 18 20 10 11 3 2 17 1 1 16 2 2 15 1 1 10 3 2 9 1 2 19 2 1 6 1 2 7 3 1 17 3 2 15 3 2 8 6 2 5 1 2 8 1 2 12 1 1 12 7 1 4 1 2 18 2 1 11 7 1 14 1 1 18 1 1 18 9 1 10 6 1 14 3 2 20 2...
output:
2
result:
ok answer is '2'
Test #4:
score: 0
Accepted
time: 2ms
memory: 12048kb
input:
20 50 1 2 18468 1 3 26501 3 4 15725 3 5 29359 3 6 24465 6 7 28146 7 8 16828 2 9 492 8 10 11943 8 11 5437 8 12 14605 3 13 154 7 14 12383 6 15 18717 9 16 19896 8 17 21727 16 18 11539 16 19 19913 18 20 26300 11 3 2 17 1 1 16 2 2 15 1 1 10 3 2 9 1 2 19 2 1 6 1 2 7 3 1 17 3 2 15 3 2 8 6 2 5 1 2 8 1 2 12 ...
output:
1
result:
ok answer is '1'
Test #5:
score: 0
Accepted
time: 0ms
memory: 12144kb
input:
100 150 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 11...
output:
3
result:
ok answer is '3'
Test #6:
score: 0
Accepted
time: 1ms
memory: 10088kb
input:
100 130 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 11...
output:
7
result:
ok answer is '7'
Test #7:
score: 0
Accepted
time: 2ms
memory: 10488kb
input:
100 200 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 11...
output:
4
result:
ok answer is '4'
Test #8:
score: 0
Accepted
time: 2ms
memory: 12132kb
input:
100 190 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 11...
output:
2
result:
ok answer is '2'
Test #9:
score: 0
Accepted
time: 0ms
memory: 12224kb
input:
1000 1500 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 ...
output:
3
result:
ok answer is '3'
Test #10:
score: 0
Accepted
time: 2ms
memory: 12268kb
input:
1000 1500 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 ...
output:
1
result:
ok answer is '1'
Test #11:
score: 0
Accepted
time: 2ms
memory: 12284kb
input:
1000 1600 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 ...
output:
1
result:
ok answer is '1'
Test #12:
score: -100
Wrong Answer
time: 0ms
memory: 12068kb
input:
100 190 1 2 184676335 1 3 191705725 1 4 293606963 1 5 57078146 2 6 168279962 6 7 29961943 5 8 54392392 5 9 39020154 5 10 123837422 7 11 197199896 3 12 217274772 7 13 18709913 6 14 263007036 11 15 287053812 3 16 303347674 9 17 151417712 17 18 68705548 15 19 326652758 12 20 128598724 2 21 275290779 11...
output:
2
result:
wrong answer expected '4', found '2'