Task: | Sadonkorjuu |
Sender: | UpHereNorth |
Submission time: | 2022-10-31 02:47:22 +0200 |
Language: | C++ (C++17) |
Status: | READY |
Result: | 100 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 33 |
#2 | ACCEPTED | 67 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.01 s | 1, 2 | details |
#2 | ACCEPTED | 0.01 s | 1, 2 | details |
#3 | ACCEPTED | 0.01 s | 1, 2 | details |
#4 | ACCEPTED | 0.01 s | 1, 2 | details |
#5 | ACCEPTED | 0.01 s | 1, 2 | details |
#6 | ACCEPTED | 0.01 s | 1, 2 | details |
#7 | ACCEPTED | 0.35 s | 2 | details |
#8 | ACCEPTED | 0.01 s | 1, 2 | details |
#9 | ACCEPTED | 0.36 s | 2 | details |
#10 | ACCEPTED | 0.01 s | 1, 2 | details |
#11 | ACCEPTED | 0.40 s | 2 | details |
#12 | ACCEPTED | 0.28 s | 2 | details |
#13 | ACCEPTED | 0.29 s | 2 | details |
#14 | ACCEPTED | 0.28 s | 2 | details |
#15 | ACCEPTED | 0.01 s | 1, 2 | details |
#16 | ACCEPTED | 0.01 s | 1, 2 | details |
#17 | ACCEPTED | 0.01 s | 1, 2 | details |
#18 | ACCEPTED | 0.01 s | 1, 2 | details |
#19 | ACCEPTED | 0.01 s | 1, 2 | details |
#20 | ACCEPTED | 0.01 s | 1, 2 | details |
#21 | ACCEPTED | 0.27 s | 2 | details |
#22 | ACCEPTED | 0.28 s | 2 | details |
#23 | ACCEPTED | 0.28 s | 2 | details |
#24 | ACCEPTED | 0.01 s | 1, 2 | details |
#25 | ACCEPTED | 0.28 s | 2 | details |
#26 | ACCEPTED | 0.01 s | 1, 2 | details |
#27 | ACCEPTED | 0.26 s | 2 | details |
#28 | ACCEPTED | 0.01 s | 1, 2 | details |
#29 | ACCEPTED | 0.26 s | 2 | details |
#30 | ACCEPTED | 0.01 s | 1, 2 | details |
#31 | ACCEPTED | 0.27 s | 2 | details |
Compiler report
input/code.cpp: In function 'll dfs_1(int, int, int)': input/code.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int i = 0; i < adj[cur].size(); ++i){ | ~~^~~~~~~~~~~~~~~~~ input/code.cpp: In function 'void dfs_2(int, int, int, ll)': input/code.cpp:49:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i = 0; i < adj[cur].size(); ++i){ | ~~^~~~~~~~~~~~~~~~~ input/code.cpp: In function 'int main()': input/code.cpp:88:10: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized] 88 | dfs_2(st, 0, 0, 0); | ~~~~~^~~~~~~~~~~~~
Code
#include <bits/stdc++.h>using namespace std;using ll = long long;const int N = 2e5+1;vector<pair<int, int>> adj[N];bool t[N];vector<ll> dis_down[N];ll dis_up[N];ll mndown[N], smndown[N];ll dfs_1(int cur, int pre, int c){dis_up[cur] = dis_up[pre] + c;if(!t[cur])dis_up[cur] = 0;for(int i = 0; i < adj[cur].size(); ++i){int nex = adj[cur][i].first;int c_nex = adj[cur][i].second;if(nex==pre){dis_down[cur].push_back(2e15);continue;}ll dis = dfs_1(nex, cur, c_nex);dis_down[cur].push_back(dis);if(dis <= mndown[cur]){smndown[cur] = mndown[cur];mndown[cur] = dis;}}if(!t[cur])mndown[cur] = smndown[cur] = 0;return mndown[cur] + c;}void dfs_2(int cur, int pre, int c, ll mnup){dis_up[cur] = min(dis_up[cur], mnup + c);for(int i = 0; i < adj[cur].size(); ++i){int nex = adj[cur][i].first;int c_nex = adj[cur][i].second;if(nex==pre)continue;ll child_min;if(dis_down[cur][i] == mndown[cur])child_min = smndown[cur];else child_min = mndown[cur];ll mn = min(child_min, dis_up[cur]);dfs_2(nex, cur, c_nex, mn);}}int main(){for(int i = 1; i < N; ++i){mndown[i] = 1e14;smndown[i] = 1e14;}int n;cin >> n;int st;for(int i = 1; i <= n; ++i){cin>>t[i];if(!t[i])st=i;}for(int i = 0; i < n - 1; ++i){int a, b, c;cin >> a >> b >> c;adj[a].push_back({b, c});adj[b].push_back({a, c});}dfs_1(st, 0, 0);dfs_2(st, 0, 0, 0);for(int i = 1; i <= n; ++i){// cout << i << " " << dis_up[i] << " " << mndown[i] << "\n";}ll ans = 0;for(int i = 1; i <= n; ++i){ans += min(dis_up[i], mndown[i]);}cout << ans << "\n";}
Test details
Test 1
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1 0 |
correct output |
---|
0 |
user output |
---|
0 |
Test 2
Group: 1, 2
Verdict: ACCEPTED
input |
---|
5 0 0 0 0 0 1 2 1 2 3 2 3 4 3 ... |
correct output |
---|
0 |
user output |
---|
0 |
Test 3
Group: 1, 2
Verdict: ACCEPTED
input |
---|
4 1 0 1 1 1 2 10 2 3 20 2 4 30 |
correct output |
---|
60 |
user output |
---|
60 |
Test 4
Group: 1, 2
Verdict: ACCEPTED
input |
---|
5 0 1 1 1 0 1 2 10 2 3 20 3 4 30 ... |
correct output |
---|
80 |
user output |
---|
80 |
Test 5
Group: 1, 2
Verdict: ACCEPTED
input |
---|
5 0 1 0 1 1 1 2 1 2 3 5 3 4 3 ... |
correct output |
---|
6 |
user output |
---|
6 |
Test 6
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
5506363 |
user output |
---|
5506363 |
Test 7
Group: 2
Verdict: ACCEPTED
input |
---|
200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
1795118520 |
user output |
---|
1795118520 |
Test 8
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 0 0 1 0 1 1 0 1 0 1 1 0 0 0 1 ... |
correct output |
---|
293576 |
user output |
---|
293576 |
Test 9
Group: 2
Verdict: ACCEPTED
input |
---|
200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
816932444 |
user output |
---|
816932444 |
Test 10
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ... |
correct output |
---|
3089 |
user output |
---|
3089 |
Test 11
Group: 2
Verdict: ACCEPTED
input |
---|
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ... |
correct output |
---|
40839 |
user output |
---|
40839 |
Test 12
Group: 2
Verdict: ACCEPTED
input |
---|
200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
5683983203973 |
user output |
---|
5683983203973 |
Test 13
Group: 2
Verdict: ACCEPTED
input |
---|
200000 0 1 1 1 1 1 1 0 0 0 1 1 0 1 0 ... |
correct output |
---|
58572993 |
user output |
---|
58572993 |
Test 14
Group: 2
Verdict: ACCEPTED
input |
---|
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ... |
correct output |
---|
32755 |
user output |
---|
32755 |
Test 15
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
126238345 |
user output |
---|
126238345 |
Test 16
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 0 0 0 1 0 1 1 1 0 0 1 0 1 1 0 ... |
correct output |
---|
278678 |
user output |
---|
278678 |
Test 17
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 ... |
correct output |
---|
34929 |
user output |
---|
34929 |
Test 18
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
1543963 |
user output |
---|
1543963 |
Test 19
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ... |
correct output |
---|
39606 |
user output |
---|
39606 |
Test 20
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 1 0 1 0 1 0 0 0 0 1 1 0 0 0 1 ... |
correct output |
---|
321598 |
user output |
---|
321598 |
Test 21
Group: 2
Verdict: ACCEPTED
input |
---|
200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
978670626 |
user output |
---|
978670626 |
Test 22
Group: 2
Verdict: ACCEPTED
input |
---|
200000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ... |
correct output |
---|
375218 |
user output |
---|
375218 |
Test 23
Group: 2
Verdict: ACCEPTED
input |
---|
200000 1 1 1 1 0 0 0 0 0 1 0 1 0 1 1 ... |
correct output |
---|
60422556 |
user output |
---|
60422556 |
Test 24
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
291990 |
user output |
---|
291990 |
Test 25
Group: 2
Verdict: ACCEPTED
input |
---|
200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
59607954 |
user output |
---|
59607954 |
Test 26
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
990 |
user output |
---|
990 |
Test 27
Group: 2
Verdict: ACCEPTED
input |
---|
200000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
199982 |
user output |
---|
199982 |
Test 28
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
7987 |
user output |
---|
7987 |
Test 29
Group: 2
Verdict: ACCEPTED
input |
---|
200000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
3137875 |
user output |
---|
3137875 |
Test 30
Group: 1, 2
Verdict: ACCEPTED
input |
---|
1000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
4657693 |
user output |
---|
4657693 |
Test 31
Group: 2
Verdict: ACCEPTED
input |
---|
200000 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ... |
correct output |
---|
1652889357 |
user output |
---|
1652889357 |