oj.uz

답안 #943824

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
943824 2024-03-12T01:50:14 Z yeediot Designated Cities (JOI19_designated_cities) C++17
100 / 100
 272 ms 51476 KB 
#include<bits/stdc++.h>
using namespace std;
#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
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
struct line{
    int a,b;
    int operator()(const int x)const{
        return a*x+b;
    }
};
bool check(line l1,line l2,line l3){
    return (l3.b-l2.b)*(l1.a-l2.a)<=(l2.b-l1.b)*(l2.a-l3.a);
}
const int mxn=2e5+5;
vector<tuple<int,int,int>>adj[mxn];
int dp[mxn][2];
pii dp2[mxn];
int 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];
    }
}
int all;
int 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;
    }
}
int 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 setIO(std::string)':
designated_cities.cpp:42:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
designated_cities.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11840 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 2 ms 11612 KB Output is correct
7 Correct 2 ms 11608 KB Output is correct
8 Correct 2 ms 11612 KB Output is correct
9 Correct 3 ms 11844 KB Output is correct
10 Correct 2 ms 11612 KB Output is correct
11 Correct 3 ms 11612 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11608 KB Output is correct
2 Correct 195 ms 29220 KB Output is correct
3 Correct 231 ms 50740 KB Output is correct
4 Correct 169 ms 29012 KB Output is correct
5 Correct 185 ms 29644 KB Output is correct
6 Correct 187 ms 32084 KB Output is correct
7 Correct 173 ms 30024 KB Output is correct
8 Correct 257 ms 50004 KB Output is correct
9 Correct 107 ms 30456 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 178 ms 29208 KB Output is correct
3 Correct 253 ms 51136 KB Output is correct
4 Correct 189 ms 29160 KB Output is correct
5 Correct 169 ms 29764 KB Output is correct
6 Correct 192 ms 33028 KB Output is correct
7 Correct 117 ms 32244 KB Output is correct
8 Correct 257 ms 43344 KB Output is correct
9 Correct 107 ms 30456 KB Output is correct

Subtask #4
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11840 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 2 ms 11612 KB Output is correct
7 Correct 2 ms 11608 KB Output is correct
8 Correct 2 ms 11612 KB Output is correct
9 Correct 3 ms 11844 KB Output is correct
10 Correct 2 ms 11612 KB Output is correct
11 Correct 3 ms 11612 KB Output is correct
12 Correct 2 ms 11608 KB Output is correct
13 Correct 3 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 4 ms 11868 KB Output is correct
19 Correct 3 ms 11864 KB Output is correct
20 Correct 4 ms 11868 KB Output is correct
21 Correct 3 ms 11868 KB Output is correct
22 Correct 4 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 11608 KB Output is correct
2 Correct 195 ms 29220 KB Output is correct
3 Correct 231 ms 50740 KB Output is correct
4 Correct 169 ms 29012 KB Output is correct
5 Correct 185 ms 29644 KB Output is correct
6 Correct 187 ms 32084 KB Output is correct
7 Correct 173 ms 30024 KB Output is correct
8 Correct 257 ms 50004 KB Output is correct
9 Correct 107 ms 30456 KB Output is correct
10 Correct 2 ms 11612 KB Output is correct
11 Correct 178 ms 29208 KB Output is correct
12 Correct 253 ms 51136 KB Output is correct
13 Correct 189 ms 29160 KB Output is correct
14 Correct 169 ms 29764 KB Output is correct
15 Correct 192 ms 33028 KB Output is correct
16 Correct 117 ms 32244 KB Output is correct
17 Correct 257 ms 43344 KB Output is correct
18 Correct 107 ms 30456 KB Output is correct
19 Correct 2 ms 11612 KB Output is correct
20 Correct 216 ms 28980 KB Output is correct
21 Correct 249 ms 50960 KB Output is correct
22 Correct 165 ms 29012 KB Output is correct
23 Correct 196 ms 29516 KB Output is correct
24 Correct 198 ms 29512 KB Output is correct
25 Correct 201 ms 29520 KB Output is correct
26 Correct 182 ms 29424 KB Output is correct
27 Correct 213 ms 29720 KB Output is correct
28 Correct 258 ms 32212 KB Output is correct
29 Correct 176 ms 29780 KB Output is correct
30 Correct 176 ms 29704 KB Output is correct
31 Correct 137 ms 29696 KB Output is correct
32 Correct 247 ms 43860 KB Output is correct
33 Correct 113 ms 30716 KB Output is correct

Subtask #6
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 11840 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 2 ms 11612 KB Output is correct
7 Correct 2 ms 11608 KB Output is correct
8 Correct 2 ms 11612 KB Output is correct
9 Correct 3 ms 11844 KB Output is correct
10 Correct 2 ms 11612 KB Output is correct
11 Correct 3 ms 11612 KB Output is correct
12 Correct 2 ms 11608 KB Output is correct
13 Correct 195 ms 29220 KB Output is correct
14 Correct 231 ms 50740 KB Output is correct
15 Correct 169 ms 29012 KB Output is correct
16 Correct 185 ms 29644 KB Output is correct
17 Correct 187 ms 32084 KB Output is correct
18 Correct 173 ms 30024 KB Output is correct
19 Correct 257 ms 50004 KB Output is correct
20 Correct 107 ms 30456 KB Output is correct
21 Correct 2 ms 11612 KB Output is correct
22 Correct 178 ms 29208 KB Output is correct
23 Correct 253 ms 51136 KB Output is correct
24 Correct 189 ms 29160 KB Output is correct
25 Correct 169 ms 29764 KB Output is correct
26 Correct 192 ms 33028 KB Output is correct
27 Correct 117 ms 32244 KB Output is correct
28 Correct 257 ms 43344 KB Output is correct
29 Correct 107 ms 30456 KB Output is correct
30 Correct 2 ms 11608 KB Output is correct
31 Correct 3 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 4 ms 11868 KB Output is correct
37 Correct 3 ms 11864 KB Output is correct
38 Correct 4 ms 11868 KB Output is correct
39 Correct 3 ms 11868 KB Output is correct
40 Correct 4 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 2 ms 11612 KB Output is correct
46 Correct 216 ms 28980 KB Output is correct
47 Correct 249 ms 50960 KB Output is correct
48 Correct 165 ms 29012 KB Output is correct
49 Correct 196 ms 29516 KB Output is correct
50 Correct 198 ms 29512 KB Output is correct
51 Correct 201 ms 29520 KB Output is correct
52 Correct 182 ms 29424 KB Output is correct
53 Correct 213 ms 29720 KB Output is correct
54 Correct 258 ms 32212 KB Output is correct
55 Correct 176 ms 29780 KB Output is correct
56 Correct 176 ms 29704 KB Output is correct
57 Correct 137 ms 29696 KB Output is correct
58 Correct 247 ms 43860 KB Output is correct
59 Correct 113 ms 30716 KB Output is correct
60 Correct 2 ms 11612 KB Output is correct
61 Correct 213 ms 30548 KB Output is correct
62 Correct 260 ms 51476 KB Output is correct
63 Correct 206 ms 30460 KB Output is correct
64 Correct 214 ms 30820 KB Output is correct
65 Correct 198 ms 30636 KB Output is correct
66 Correct 209 ms 30876 KB Output is correct
67 Correct 206 ms 30476 KB Output is correct
68 Correct 218 ms 31048 KB Output is correct
69 Correct 236 ms 33632 KB Output is correct
70 Correct 205 ms 31056 KB Output is correct
71 Correct 207 ms 31092 KB Output is correct
72 Correct 178 ms 31876 KB Output is correct
73 Correct 272 ms 44944 KB Output is correct
74 Correct 143 ms 33516 KB Output is correct