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답안 #317814

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
317814 2020-10-30T12:37:34 Z zaneyu 경주 (Race) (IOI11_race) C++14
100 / 100
 533 ms 85516 KB 
/*input
11 12
0 1 3
0 2 4
2 3 5
3 4 4
4 5 6
0 6 3
6 7 2
6 8 5
8 9 6
8 10 7
2


*/
#include "race.h"
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
 
#pragma GCC optimize("unroll-loops,no-stack-protector")
//order_of_key #of elements less than x
// find_by_order kth element
#define ll long long 
#define ld long double
#define pii pair<int,int>
#define piii pair<int,pii>
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
#define f first
#define s second
#define pb push_back
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define FILL(n,x) memset(n,x,sizeof(n))
#define ALL(_a) _a.begin(),_a.end()
#define sz(x) (int)x.size()
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#define MP make_pair
const ll INF64=4e12;
const int INF=0x3f3f3f3f;
const ll MOD=1e9+7;
const ld PI=acos(-1);
const ld eps=1e-9;
#define lowb(x) x&(-x)
#define MNTO(x,y) x=min(x,(__typeof__(x))y)
#define MXTO(x,y) x=max(x,(__typeof__(x))y)
ll mult(ll a,ll b){
    return ((a%MOD)*(b%MOD))%MOD;
}
ll mypow(ll a,ll b){
    if(b<=0) return 1;
    ll res=1LL;
    while(b){
        if(b&1){
            res=(res*a)%MOD;
        }
        a=(a*a)%MOD;
        b>>=1;
    }
    return res;
}
const ll maxn=5e5+5;
const ll maxlg=__lg(maxn)+2;
ll pref[maxn];
int n,k;
int ans=INF;
int rt[maxn];
map<int,int> mp[maxn];
vector<pii> v[maxn];
pii bias[maxn];
void dfs(int u,int p){
    rt[u]=u;
    mp[u][0]=0;
    for(auto xx:v[u]){
        int vv=xx.f;
        if(vv==p) continue;
        dfs(vv,u);
        int ru=rt[u],rv=rt[vv];
        bias[rv].f+=xx.s;
        bias[rv].s++;
        if(sz(mp[ru])<sz(mp[rv])) swap(ru,rv);
        for(auto x:mp[rv]){
            if(mp[ru].count(k-x.f-bias[rv].f-bias[ru].f)){
                MNTO(ans,mp[ru][k-x.f-bias[rv].f-bias[ru].f]+bias[ru].s+bias[rv].s+x.s);
            }
        }
        for(auto x:mp[rv]){
            if((!mp[ru].count(x.f+bias[rv].f-bias[ru].f) or mp[ru][x.f+bias[rv].f-bias[ru].f]>x.s+bias[rv].s-bias[ru].s)){
                mp[ru][x.f+bias[rv].f-bias[ru].f]=x.s+bias[rv].s-bias[ru].s;
            }
        }
        rt[u]=ru;
        mp[rv].clear();
    }
    /*cout<<u<<' '<<bias[rt[u]].f<<' '<<bias[rt[u]].s<<'\n';
    for(auto x:mp[rt[u]]) cout<<x.f<<' '<<x.s<<'\n';
    cout<<'\n';*/
}
int best_path(int N, int K, int H[][2], int L[]){
    n=N;
    k=K;
    REP(i,n-1){
        v[H[i][0]].pb({H[i][1],L[i]});
        v[H[i][1]].pb({H[i][0],L[i]});
    }
    dfs(0,-1);
    if(ans>n) return -1;
    return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 35584 KB Output is correct
2 Correct 22 ms 35456 KB Output is correct
3 Correct 22 ms 35584 KB Output is correct
4 Correct 23 ms 35584 KB Output is correct
5 Correct 22 ms 35712 KB Output is correct
6 Correct 22 ms 35584 KB Output is correct
7 Correct 22 ms 35584 KB Output is correct
8 Correct 23 ms 35584 KB Output is correct
9 Correct 22 ms 35584 KB Output is correct
10 Correct 22 ms 35584 KB Output is correct
11 Correct 22 ms 35584 KB Output is correct
12 Correct 22 ms 35584 KB Output is correct
13 Correct 22 ms 35584 KB Output is correct
14 Correct 22 ms 35584 KB Output is correct
15 Correct 22 ms 35584 KB Output is correct
16 Correct 25 ms 35712 KB Output is correct
17 Correct 22 ms 35584 KB Output is correct
18 Correct 22 ms 35712 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 35584 KB Output is correct
2 Correct 22 ms 35456 KB Output is correct
3 Correct 22 ms 35584 KB Output is correct
4 Correct 23 ms 35584 KB Output is correct
5 Correct 22 ms 35712 KB Output is correct
6 Correct 22 ms 35584 KB Output is correct
7 Correct 22 ms 35584 KB Output is correct
8 Correct 23 ms 35584 KB Output is correct
9 Correct 22 ms 35584 KB Output is correct
10 Correct 22 ms 35584 KB Output is correct
11 Correct 22 ms 35584 KB Output is correct
12 Correct 22 ms 35584 KB Output is correct
13 Correct 22 ms 35584 KB Output is correct
14 Correct 22 ms 35584 KB Output is correct
15 Correct 22 ms 35584 KB Output is correct
16 Correct 25 ms 35712 KB Output is correct
17 Correct 22 ms 35584 KB Output is correct
18 Correct 22 ms 35712 KB Output is correct
19 Correct 23 ms 35584 KB Output is correct
20 Correct 23 ms 35584 KB Output is correct
21 Correct 23 ms 35712 KB Output is correct
22 Correct 24 ms 35712 KB Output is correct
23 Correct 24 ms 35712 KB Output is correct
24 Correct 24 ms 35712 KB Output is correct
25 Correct 23 ms 35712 KB Output is correct
26 Correct 23 ms 35712 KB Output is correct
27 Correct 23 ms 35584 KB Output is correct
28 Correct 24 ms 35712 KB Output is correct
29 Correct 23 ms 35712 KB Output is correct
30 Correct 23 ms 35712 KB Output is correct
31 Correct 22 ms 35712 KB Output is correct
32 Correct 22 ms 35712 KB Output is correct
33 Correct 22 ms 35712 KB Output is correct
34 Correct 22 ms 35704 KB Output is correct
35 Correct 22 ms 35712 KB Output is correct
36 Correct 24 ms 35840 KB Output is correct
37 Correct 24 ms 35840 KB Output is correct
38 Correct 23 ms 35840 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 35584 KB Output is correct
2 Correct 22 ms 35456 KB Output is correct
3 Correct 22 ms 35584 KB Output is correct
4 Correct 23 ms 35584 KB Output is correct
5 Correct 22 ms 35712 KB Output is correct
6 Correct 22 ms 35584 KB Output is correct
7 Correct 22 ms 35584 KB Output is correct
8 Correct 23 ms 35584 KB Output is correct
9 Correct 22 ms 35584 KB Output is correct
10 Correct 22 ms 35584 KB Output is correct
11 Correct 22 ms 35584 KB Output is correct
12 Correct 22 ms 35584 KB Output is correct
13 Correct 22 ms 35584 KB Output is correct
14 Correct 22 ms 35584 KB Output is correct
15 Correct 22 ms 35584 KB Output is correct
16 Correct 25 ms 35712 KB Output is correct
17 Correct 22 ms 35584 KB Output is correct
18 Correct 22 ms 35712 KB Output is correct
19 Correct 151 ms 41848 KB Output is correct
20 Correct 149 ms 43004 KB Output is correct
21 Correct 149 ms 43000 KB Output is correct
22 Correct 157 ms 43392 KB Output is correct
23 Correct 192 ms 43512 KB Output is correct
24 Correct 153 ms 43256 KB Output is correct
25 Correct 132 ms 51832 KB Output is correct
26 Correct 90 ms 60408 KB Output is correct
27 Correct 253 ms 50936 KB Output is correct
28 Correct 326 ms 85516 KB Output is correct
29 Correct 334 ms 84220 KB Output is correct
30 Correct 249 ms 51192 KB Output is correct
31 Correct 249 ms 50936 KB Output is correct
32 Correct 297 ms 51064 KB Output is correct
33 Correct 284 ms 50168 KB Output is correct
34 Correct 424 ms 60792 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 35584 KB Output is correct
2 Correct 22 ms 35456 KB Output is correct
3 Correct 22 ms 35584 KB Output is correct
4 Correct 23 ms 35584 KB Output is correct
5 Correct 22 ms 35712 KB Output is correct
6 Correct 22 ms 35584 KB Output is correct
7 Correct 22 ms 35584 KB Output is correct
8 Correct 23 ms 35584 KB Output is correct
9 Correct 22 ms 35584 KB Output is correct
10 Correct 22 ms 35584 KB Output is correct
11 Correct 22 ms 35584 KB Output is correct
12 Correct 22 ms 35584 KB Output is correct
13 Correct 22 ms 35584 KB Output is correct
14 Correct 22 ms 35584 KB Output is correct
15 Correct 22 ms 35584 KB Output is correct
16 Correct 25 ms 35712 KB Output is correct
17 Correct 22 ms 35584 KB Output is correct
18 Correct 22 ms 35712 KB Output is correct
19 Correct 23 ms 35584 KB Output is correct
20 Correct 23 ms 35584 KB Output is correct
21 Correct 23 ms 35712 KB Output is correct
22 Correct 24 ms 35712 KB Output is correct
23 Correct 24 ms 35712 KB Output is correct
24 Correct 24 ms 35712 KB Output is correct
25 Correct 23 ms 35712 KB Output is correct
26 Correct 23 ms 35712 KB Output is correct
27 Correct 23 ms 35584 KB Output is correct
28 Correct 24 ms 35712 KB Output is correct
29 Correct 23 ms 35712 KB Output is correct
30 Correct 23 ms 35712 KB Output is correct
31 Correct 22 ms 35712 KB Output is correct
32 Correct 22 ms 35712 KB Output is correct
33 Correct 22 ms 35712 KB Output is correct
34 Correct 22 ms 35704 KB Output is correct
35 Correct 22 ms 35712 KB Output is correct
36 Correct 24 ms 35840 KB Output is correct
37 Correct 24 ms 35840 KB Output is correct
38 Correct 23 ms 35840 KB Output is correct
39 Correct 151 ms 41848 KB Output is correct
40 Correct 149 ms 43004 KB Output is correct
41 Correct 149 ms 43000 KB Output is correct
42 Correct 157 ms 43392 KB Output is correct
43 Correct 192 ms 43512 KB Output is correct
44 Correct 153 ms 43256 KB Output is correct
45 Correct 132 ms 51832 KB Output is correct
46 Correct 90 ms 60408 KB Output is correct
47 Correct 253 ms 50936 KB Output is correct
48 Correct 326 ms 85516 KB Output is correct
49 Correct 334 ms 84220 KB Output is correct
50 Correct 249 ms 51192 KB Output is correct
51 Correct 249 ms 50936 KB Output is correct
52 Correct 297 ms 51064 KB Output is correct
53 Correct 284 ms 50168 KB Output is correct
54 Correct 424 ms 60792 KB Output is correct
55 Correct 38 ms 36600 KB Output is correct
56 Correct 30 ms 36344 KB Output is correct
57 Correct 97 ms 43128 KB Output is correct
58 Correct 86 ms 42860 KB Output is correct
59 Correct 117 ms 60536 KB Output is correct
60 Correct 322 ms 84600 KB Output is correct
61 Correct 285 ms 52472 KB Output is correct
62 Correct 261 ms 51060 KB Output is correct
63 Correct 299 ms 51192 KB Output is correct
64 Correct 530 ms 57720 KB Output is correct
65 Correct 533 ms 61176 KB Output is correct
66 Correct 340 ms 81272 KB Output is correct
67 Correct 225 ms 51556 KB Output is correct
68 Correct 417 ms 59640 KB Output is correct
69 Correct 434 ms 62968 KB Output is correct
70 Correct 400 ms 58616 KB Output is correct