oj.uz

답안 #943826

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
943826 2024-03-12T01:53:35 Z yeediot Designated Cities (JOI19_designated_cities) C++14
100 / 100
 294 ms 51204 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define int long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
#define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
#define __lg(x) 63-__builtin_clzll(x)
#define pow2(x) (1LL<<x)
void __print(int x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef local
void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
void setio(){}
#define debug(x...)
#endif
const int mxn=2e5+5;
vector<tuple<int,int,int>>adj[mxn];
ll dp[mxn][2];
pair<ll,int> dp2[mxn];
ll dep[mxn];
int p1;
void dfs(int v,int pa){
    for(auto [u,d,d2]:adj[v]){
        if(u==pa)continue;
        dp[u][0]+=dp[v][0]+d;
        dep[u]=dep[v]+d;
        dfs(u,v);
        dp[v][1]+=d2+dp[u][1];
    }
}
ll all;
ll ans[mxn];
void calc(int v,int pa){
    int mx=0;
    dp2[v].F=dep[v];
    dp2[v].S=v;
    int t1=0;
    for(auto [u,d,d2]:adj[v]){
        if(u==pa)continue;
        dp[u][1]+=dp[v][1]-dp[u][1]-d2;
        calc(u,v);
        if(dp2[v].F+dp2[u].F-2*dep[v]>mx){
            t1=dp2[v].S;
            mx=dp2[v].F+dp2[u].F-2*dep[v];
        }
        dp2[v]=max(dp2[v],dp2[u]);
    }
    ans[1]=min(ans[1],all-dp[v][0]-dp[v][1]);
    if(ans[2]>all-dp[v][0]-dp[v][1]-mx){
        p1=t1;
        ans[2]=all-dp[v][0]-dp[v][1]-mx;
    }
}
ll len[mxn];
int idx;
int dfs2(int v,int pa){
    vector<int>temp;
    for(auto [u,d,d2]:adj[v]){
        if(u==pa)continue;
        temp.pb(dfs2(u,v)+d);
    }
    if(sz(temp)==0)return 0;
    auto it=max_element(temp.begin(),temp.end());
    for(auto it2=temp.begin();it2!=temp.end();it2++){
        if(it2==it)continue;
        len[idx++]=*it2;
    }
    return *it;
}
signed main(){
    setio();
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    ans[2]=1e18;
    ans[1]=1e18;
    for(int i=1;i<n;i++){
        int a,b,c,d;
        cin>>a>>b>>c>>d;
        adj[a].pb({b,c,d});
        adj[b].pb({a,d,c});
        all+=c+d;
    }
    dfs(1,1);
    calc(1,1);
    int v=dfs2(p1,p1);
    len[idx++]=v;
    sort(len,len+idx,greater<int>());
    for(int i=1;i<idx;i++){
        ans[2+i]=ans[1+i]-len[i];
    }
    int q;
    cin>>q;
    while(q--){
        int x;
        cin>>x;
        cout<<ans[x]<<'\n';
    }
}
 /*
 input:
 
 */

Compilation message

designated_cities.cpp: In function 'void dfs(long long int, long long int)':
designated_cities.cpp:49:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   49 |     for(auto [u,d,d2]:adj[v]){
      |              ^
designated_cities.cpp: In function 'void calc(long long int, long long int)':
designated_cities.cpp:64:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   64 |     for(auto [u,d,d2]:adj[v]){
      |              ^
designated_cities.cpp: In function 'long long int dfs2(long long int, long long int)':
designated_cities.cpp:84:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   84 |     for(auto [u,d,d2]:adj[v]){
      |              ^

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11612 KB Output is correct
2 Correct 2 ms 11612 KB Output is correct
3 Correct 3 ms 11612 KB Output is correct
4 Correct 2 ms 11612 KB Output is correct
5 Correct 2 ms 11612 KB Output is correct
6 Correct 3 ms 11612 KB Output is correct
7 Correct 2 ms 11612 KB Output is correct
8 Correct 3 ms 11612 KB Output is correct
9 Correct 2 ms 11608 KB Output is correct
10 Correct 3 ms 11608 KB Output is correct
11 Correct 2 ms 11612 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11612 KB Output is correct
2 Correct 236 ms 29040 KB Output is correct
3 Correct 234 ms 50800 KB Output is correct
4 Correct 184 ms 29184 KB Output is correct
5 Correct 178 ms 29648 KB Output is correct
6 Correct 192 ms 32080 KB Output is correct
7 Correct 146 ms 29692 KB Output is correct
8 Correct 251 ms 50208 KB Output is correct
9 Correct 114 ms 30552 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11612 KB Output is correct
2 Correct 175 ms 28972 KB Output is correct
3 Correct 242 ms 50828 KB Output is correct
4 Correct 201 ms 29156 KB Output is correct
5 Correct 166 ms 29700 KB Output is correct
6 Correct 217 ms 33044 KB Output is correct
7 Correct 122 ms 31832 KB Output is correct
8 Correct 234 ms 43344 KB Output is correct
9 Correct 107 ms 30920 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11612 KB Output is correct
2 Correct 2 ms 11612 KB Output is correct
3 Correct 3 ms 11612 KB Output is correct
4 Correct 2 ms 11612 KB Output is correct
5 Correct 2 ms 11612 KB Output is correct
6 Correct 3 ms 11612 KB Output is correct
7 Correct 2 ms 11612 KB Output is correct
8 Correct 3 ms 11612 KB Output is correct
9 Correct 2 ms 11608 KB Output is correct
10 Correct 3 ms 11608 KB Output is correct
11 Correct 2 ms 11612 KB Output is correct
12 Correct 0 ms 11768 KB Output is correct
13 Correct 4 ms 11868 KB Output is correct
14 Correct 3 ms 12124 KB Output is correct
15 Correct 3 ms 11868 KB Output is correct
16 Correct 3 ms 11868 KB Output is correct
17 Correct 4 ms 11868 KB Output is correct
18 Correct 3 ms 11868 KB Output is correct
19 Correct 4 ms 11868 KB Output is correct
20 Correct 4 ms 11868 KB Output is correct
21 Correct 4 ms 11868 KB Output is correct
22 Correct 3 ms 11868 KB Output is correct
23 Correct 4 ms 11868 KB Output is correct
24 Correct 3 ms 11868 KB Output is correct
25 Correct 4 ms 12124 KB Output is correct
26 Correct 3 ms 11868 KB Output is correct

Subtask #5
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11612 KB Output is correct
2 Correct 236 ms 29040 KB Output is correct
3 Correct 234 ms 50800 KB Output is correct
4 Correct 184 ms 29184 KB Output is correct
5 Correct 178 ms 29648 KB Output is correct
6 Correct 192 ms 32080 KB Output is correct
7 Correct 146 ms 29692 KB Output is correct
8 Correct 251 ms 50208 KB Output is correct
9 Correct 114 ms 30552 KB Output is correct
10 Correct 2 ms 11612 KB Output is correct
11 Correct 175 ms 28972 KB Output is correct
12 Correct 242 ms 50828 KB Output is correct
13 Correct 201 ms 29156 KB Output is correct
14 Correct 166 ms 29700 KB Output is correct
15 Correct 217 ms 33044 KB Output is correct
16 Correct 122 ms 31832 KB Output is correct
17 Correct 234 ms 43344 KB Output is correct
18 Correct 107 ms 30920 KB Output is correct
19 Correct 3 ms 11612 KB Output is correct
20 Correct 182 ms 29012 KB Output is correct
21 Correct 275 ms 50776 KB Output is correct
22 Correct 172 ms 29064 KB Output is correct
23 Correct 184 ms 29520 KB Output is correct
24 Correct 180 ms 29252 KB Output is correct
25 Correct 173 ms 29524 KB Output is correct
26 Correct 231 ms 29300 KB Output is correct
27 Correct 171 ms 29288 KB Output is correct
28 Correct 216 ms 32340 KB Output is correct
29 Correct 226 ms 29780 KB Output is correct
30 Correct 184 ms 29620 KB Output is correct
31 Correct 137 ms 29696 KB Output is correct
32 Correct 257 ms 43908 KB Output is correct
33 Correct 109 ms 30796 KB Output is correct

Subtask #6
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11612 KB Output is correct
2 Correct 2 ms 11612 KB Output is correct
3 Correct 3 ms 11612 KB Output is correct
4 Correct 2 ms 11612 KB Output is correct
5 Correct 2 ms 11612 KB Output is correct
6 Correct 3 ms 11612 KB Output is correct
7 Correct 2 ms 11612 KB Output is correct
8 Correct 3 ms 11612 KB Output is correct
9 Correct 2 ms 11608 KB Output is correct
10 Correct 3 ms 11608 KB Output is correct
11 Correct 2 ms 11612 KB Output is correct
12 Correct 2 ms 11612 KB Output is correct
13 Correct 236 ms 29040 KB Output is correct
14 Correct 234 ms 50800 KB Output is correct
15 Correct 184 ms 29184 KB Output is correct
16 Correct 178 ms 29648 KB Output is correct
17 Correct 192 ms 32080 KB Output is correct
18 Correct 146 ms 29692 KB Output is correct
19 Correct 251 ms 50208 KB Output is correct
20 Correct 114 ms 30552 KB Output is correct
21 Correct 2 ms 11612 KB Output is correct
22 Correct 175 ms 28972 KB Output is correct
23 Correct 242 ms 50828 KB Output is correct
24 Correct 201 ms 29156 KB Output is correct
25 Correct 166 ms 29700 KB Output is correct
26 Correct 217 ms 33044 KB Output is correct
27 Correct 122 ms 31832 KB Output is correct
28 Correct 234 ms 43344 KB Output is correct
29 Correct 107 ms 30920 KB Output is correct
30 Correct 0 ms 11768 KB Output is correct
31 Correct 4 ms 11868 KB Output is correct
32 Correct 3 ms 12124 KB Output is correct
33 Correct 3 ms 11868 KB Output is correct
34 Correct 3 ms 11868 KB Output is correct
35 Correct 4 ms 11868 KB Output is correct
36 Correct 3 ms 11868 KB Output is correct
37 Correct 4 ms 11868 KB Output is correct
38 Correct 4 ms 11868 KB Output is correct
39 Correct 4 ms 11868 KB Output is correct
40 Correct 3 ms 11868 KB Output is correct
41 Correct 4 ms 11868 KB Output is correct
42 Correct 3 ms 11868 KB Output is correct
43 Correct 4 ms 12124 KB Output is correct
44 Correct 3 ms 11868 KB Output is correct
45 Correct 3 ms 11612 KB Output is correct
46 Correct 182 ms 29012 KB Output is correct
47 Correct 275 ms 50776 KB Output is correct
48 Correct 172 ms 29064 KB Output is correct
49 Correct 184 ms 29520 KB Output is correct
50 Correct 180 ms 29252 KB Output is correct
51 Correct 173 ms 29524 KB Output is correct
52 Correct 231 ms 29300 KB Output is correct
53 Correct 171 ms 29288 KB Output is correct
54 Correct 216 ms 32340 KB Output is correct
55 Correct 226 ms 29780 KB Output is correct
56 Correct 184 ms 29620 KB Output is correct
57 Correct 137 ms 29696 KB Output is correct
58 Correct 257 ms 43908 KB Output is correct
59 Correct 109 ms 30796 KB Output is correct
60 Correct 2 ms 11612 KB Output is correct
61 Correct 233 ms 30500 KB Output is correct
62 Correct 275 ms 51204 KB Output is correct
63 Correct 209 ms 30432 KB Output is correct
64 Correct 226 ms 30800 KB Output is correct
65 Correct 247 ms 30472 KB Output is correct
66 Correct 205 ms 30748 KB Output is correct
67 Correct 198 ms 30568 KB Output is correct
68 Correct 212 ms 30984 KB Output is correct
69 Correct 226 ms 33732 KB Output is correct
70 Correct 206 ms 31056 KB Output is correct
71 Correct 207 ms 31196 KB Output is correct
72 Correct 166 ms 32000 KB Output is correct
73 Correct 294 ms 45008 KB Output is correct
74 Correct 147 ms 33784 KB Output is correct