Task: | Tietoverkko |
Sender: | mooc.fi~486604 |
Submission time: | 2021-10-06 14:44:49 +0300 |
Language: | C++ (C++11) |
Status: | READY |
Result: | 25 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 10 |
#2 | ACCEPTED | 15 |
#3 | TIME LIMIT EXCEEDED | 0 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.01 s | 1, 2, 3 | details |
#2 | ACCEPTED | 0.08 s | 2, 3 | details |
#3 | TIME LIMIT EXCEEDED | -- | 3 | details |
Code
#include <iostream> #include <vector> #include <map> using namespace std; int N; vector<pair<long long int,long long int>> v[200001]; long long int sum; bool tama=false; map<pair<long long int, long long int>, short int > juu; //vector<int> kerro; long long int globalsum=0; long long int valisum=0; long long int haku(long long int s, long long int e,long long int target){ long long int ssumma=1; for(auto u: v[s]){ if(u.first!=e&&u.second==target){ juu[{s, u.first}]=1; int uusi = haku(u.first, s, target); valisum+=globalsum*uusi; globalsum+=uusi; tama=true; } if(u.first!=e&&u.second>target) ssumma+=haku(u.first, s, target); } return ssumma; } int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); long long int a,b,c; int i; sum=0; cin>>N; long long int di[N][3]; //a ja b pitää olla long long, mutta miksi? for(i=0; i<N-1; i++){ cin>>a>>b>>c; di[i][0]=c; di[i][1]=a; di[i][2]=b; v[a].push_back({b,c}); v[b].push_back({a,c}); } long long int vasen, oikea; long long int kl0, kl1, kl2; for(i=0; i<N-1; i++){ kl0 = di[i][0]; kl1 = di[i][1]; kl2 = di[i][2]; if(juu[{kl2,kl1}]||juu[{kl1,kl2}]) continue; vasen=haku(kl1, kl2 , kl0); oikea=haku(kl2, kl1, kl0); juu[{kl2, kl1}]=1; if(tama){ valisum+=globalsum*vasen; globalsum+=vasen; valisum+=globalsum*oikea; sum+=valisum*kl0; /*kerro.push_back(vasen); kerro.push_back(oikea); long long int maara=kerro.size(); for(int ri=0; ri<maara; ri++){ for( int rj=ri; rj<maara; rj++){ if(ri==rj) continue; sum+=kl0*kerro[ri]*kerro[rj]; } }*/ tama=false; globalsum=0; valisum=0; //kerro.clear(); continue; } sum+= kl0*vasen*oikea; } cout<<sum; return 0; }
Test details
Test 1
Group: 1, 2, 3
Verdict: ACCEPTED
input |
---|
100 1 2 74 1 3 100 2 4 50 3 5 40 ... |
correct output |
---|
88687 |
user output |
---|
88687 |
Test 2
Group: 2, 3
Verdict: ACCEPTED
input |
---|
5000 1 2 613084013 1 3 832364259 2 4 411999902 3 5 989696303 ... |
correct output |
---|
1103702320243776 |
user output |
---|
1103702320243776 |
Test 3
Group: 3
Verdict: TIME LIMIT EXCEEDED
input |
---|
200000 1 2 613084013 1 3 832364259 2 4 411999902 3 5 989696303 ... |
correct output |
---|
1080549209850010931 |
user output |
---|
(empty) |