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답안 #526887

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
526887 2022-02-16T14:20:15 Z Yuisuyuno 경주 (Race) (IOI11_race) C++14
100 / 100
 478 ms 35200 KB 
//Nguyen Huu Hoang Minh
#include<stdio.h>
#include<algorithm>
#include<vector>
#include<queue>
#include "race.h"
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define reset(x) memset(x, 0,sizeof(x))
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define MAXN 200005
#define remain(x) if (x > MOD) x -= MOD
#define ii pair<int, int>
#define iiii pair< ii , ii >
#define viiii vector< iiii >
#define vi vector<int>
#define vii vector< ii >
#define bit(x, i) (((x) >> (i)) & 1)
#define Task "test"

using namespace std;

typedef long double ld;
const int inf = 1e10;
const int minf = -1e10;

int n, ans, k;
vector<ii> g[MAXN];
vector<int> brute;
bool rm[MAXN];
int s[MAXN], a[1000005], sub[MAXN], d[MAXN], dep[MAXN];

int dfs(int u, int par=-1){
    s[u] = 1;
    for(auto i : g[u]){
        int v = i.fi; if (v==par || rm[v]) continue;
        s[u] += dfs(v,u);
    }
    return s[u];
}

int get_centroid(int u, int ms, int par=-1){
    for(auto i : g[u]){
        int v = i.fi; if (v==par || rm[v]) continue;
        if (s[v]*2 > ms) return get_centroid(v,ms,u);
    }
    return u;
}

int DFS(int u, int par){
    sub[u] = 1;
    brute.pb(u);
    for(auto i : g[u]){
        int v = i.fi; int uv = i.se;
        if (v==par || rm[v]) continue;
        d[v] = d[u] + uv;
        dep[v] = dep[u] + 1;
        sub[u] += DFS(v,u);
    }
    return sub[u];
}

void centroid(int n = 0){
    int C = get_centroid(n,dfs(n));
    rm[C] = 1;
    if (s[n]==1) return;
    queue<int> q;
    for(auto i : g[C]){
        int v = i.fi; int uv = i.se; if (rm[v]) continue;
        d[C] = 0; d[v] = d[C] + uv; dep[C] = 0; dep[v] = dep[C] + 1; brute.clear();
        DFS(v,C);
        for(auto x : brute){
            if (d[x] > k) continue;
            if (d[x]== k) ans = min(ans,dep[x]);
            else if (a[k-d[x]]) ans = min(ans,dep[x] + a[k-d[x]]);
        }
        for(auto x : brute){
            if (d[x] <= k && (a[d[x]]==0 || a[d[x]] > dep[x])) a[d[x]] = dep[x], q.push(d[x]);
        }
    }
    while (q.size()){
        a[q.front()] = 0;
        q.pop();
    }
    for(auto i : g[C]){
        int v = i.fi; if (!rm[v]) centroid(v);
    }
}

int best_path(int N, int K, int H[][2], int L[])
{
	int i;
	n = N, k = K;
	for (i = 0; i < n - 1; i++){
		g[H[i][0]].push_back(ii(H[i][1],L[i]));
		g[H[i][1]].push_back(ii(H[i][0],L[i]));
	}
	ans = n + 1;
	centroid();
	return ans == n + 1 ? -1 : ans;
}

Compilation message

race.cpp:27:17: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+10' to '2147483647' [-Woverflow]
   27 | const int inf = 1e10;
      |                 ^~~~
race.cpp:28:18: warning: overflow in conversion from 'double' to 'int' changes value from '-1.0e+10' to '-2147483648' [-Woverflow]
   28 | const int minf = -1e10;
      |                  ^~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4996 KB Output is correct
2 Correct 2 ms 4996 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 2 ms 4944 KB Output is correct
5 Correct 2 ms 4944 KB Output is correct
6 Correct 2 ms 4996 KB Output is correct
7 Correct 3 ms 4944 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4996 KB Output is correct
12 Correct 3 ms 4996 KB Output is correct
13 Correct 3 ms 4944 KB Output is correct
14 Correct 3 ms 4944 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 4988 KB Output is correct
17 Correct 3 ms 4944 KB Output is correct
18 Correct 3 ms 4976 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4996 KB Output is correct
2 Correct 2 ms 4996 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 2 ms 4944 KB Output is correct
5 Correct 2 ms 4944 KB Output is correct
6 Correct 2 ms 4996 KB Output is correct
7 Correct 3 ms 4944 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4996 KB Output is correct
12 Correct 3 ms 4996 KB Output is correct
13 Correct 3 ms 4944 KB Output is correct
14 Correct 3 ms 4944 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 4988 KB Output is correct
17 Correct 3 ms 4944 KB Output is correct
18 Correct 3 ms 4976 KB Output is correct
19 Correct 3 ms 4972 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5072 KB Output is correct
22 Correct 5 ms 7504 KB Output is correct
23 Correct 5 ms 7192 KB Output is correct
24 Correct 7 ms 8060 KB Output is correct
25 Correct 4 ms 6868 KB Output is correct
26 Correct 4 ms 6396 KB Output is correct
27 Correct 3 ms 5016 KB Output is correct
28 Correct 4 ms 5840 KB Output is correct
29 Correct 4 ms 6352 KB Output is correct
30 Correct 4 ms 6404 KB Output is correct
31 Correct 4 ms 6864 KB Output is correct
32 Correct 4 ms 6864 KB Output is correct
33 Correct 5 ms 7696 KB Output is correct
34 Correct 4 ms 7320 KB Output is correct
35 Correct 5 ms 7928 KB Output is correct
36 Correct 5 ms 8328 KB Output is correct
37 Correct 4 ms 6996 KB Output is correct
38 Correct 4 ms 6228 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4996 KB Output is correct
2 Correct 2 ms 4996 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 2 ms 4944 KB Output is correct
5 Correct 2 ms 4944 KB Output is correct
6 Correct 2 ms 4996 KB Output is correct
7 Correct 3 ms 4944 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4996 KB Output is correct
12 Correct 3 ms 4996 KB Output is correct
13 Correct 3 ms 4944 KB Output is correct
14 Correct 3 ms 4944 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 4988 KB Output is correct
17 Correct 3 ms 4944 KB Output is correct
18 Correct 3 ms 4976 KB Output is correct
19 Correct 124 ms 13060 KB Output is correct
20 Correct 125 ms 13128 KB Output is correct
21 Correct 124 ms 13196 KB Output is correct
22 Correct 119 ms 13280 KB Output is correct
23 Correct 99 ms 13444 KB Output is correct
24 Correct 58 ms 13180 KB Output is correct
25 Correct 137 ms 16452 KB Output is correct
26 Correct 84 ms 19004 KB Output is correct
27 Correct 165 ms 21052 KB Output is correct
28 Correct 374 ms 32984 KB Output is correct
29 Correct 414 ms 32140 KB Output is correct
30 Correct 166 ms 21064 KB Output is correct
31 Correct 179 ms 21132 KB Output is correct
32 Correct 222 ms 21188 KB Output is correct
33 Correct 279 ms 20392 KB Output is correct
34 Correct 266 ms 21268 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4996 KB Output is correct
2 Correct 2 ms 4996 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 2 ms 4944 KB Output is correct
5 Correct 2 ms 4944 KB Output is correct
6 Correct 2 ms 4996 KB Output is correct
7 Correct 3 ms 4944 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4996 KB Output is correct
12 Correct 3 ms 4996 KB Output is correct
13 Correct 3 ms 4944 KB Output is correct
14 Correct 3 ms 4944 KB Output is correct
15 Correct 3 ms 4992 KB Output is correct
16 Correct 3 ms 4988 KB Output is correct
17 Correct 3 ms 4944 KB Output is correct
18 Correct 3 ms 4976 KB Output is correct
19 Correct 3 ms 4972 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5072 KB Output is correct
22 Correct 5 ms 7504 KB Output is correct
23 Correct 5 ms 7192 KB Output is correct
24 Correct 7 ms 8060 KB Output is correct
25 Correct 4 ms 6868 KB Output is correct
26 Correct 4 ms 6396 KB Output is correct
27 Correct 3 ms 5016 KB Output is correct
28 Correct 4 ms 5840 KB Output is correct
29 Correct 4 ms 6352 KB Output is correct
30 Correct 4 ms 6404 KB Output is correct
31 Correct 4 ms 6864 KB Output is correct
32 Correct 4 ms 6864 KB Output is correct
33 Correct 5 ms 7696 KB Output is correct
34 Correct 4 ms 7320 KB Output is correct
35 Correct 5 ms 7928 KB Output is correct
36 Correct 5 ms 8328 KB Output is correct
37 Correct 4 ms 6996 KB Output is correct
38 Correct 4 ms 6228 KB Output is correct
39 Correct 124 ms 13060 KB Output is correct
40 Correct 125 ms 13128 KB Output is correct
41 Correct 124 ms 13196 KB Output is correct
42 Correct 119 ms 13280 KB Output is correct
43 Correct 99 ms 13444 KB Output is correct
44 Correct 58 ms 13180 KB Output is correct
45 Correct 137 ms 16452 KB Output is correct
46 Correct 84 ms 19004 KB Output is correct
47 Correct 165 ms 21052 KB Output is correct
48 Correct 374 ms 32984 KB Output is correct
49 Correct 414 ms 32140 KB Output is correct
50 Correct 166 ms 21064 KB Output is correct
51 Correct 179 ms 21132 KB Output is correct
52 Correct 222 ms 21188 KB Output is correct
53 Correct 279 ms 20392 KB Output is correct
54 Correct 266 ms 21268 KB Output is correct
55 Correct 10 ms 5816 KB Output is correct
56 Correct 10 ms 5776 KB Output is correct
57 Correct 81 ms 13440 KB Output is correct
58 Correct 33 ms 12784 KB Output is correct
59 Correct 96 ms 19500 KB Output is correct
60 Correct 434 ms 35200 KB Output is correct
61 Correct 176 ms 21320 KB Output is correct
62 Correct 165 ms 21332 KB Output is correct
63 Correct 232 ms 21304 KB Output is correct
64 Correct 478 ms 23448 KB Output is correct
65 Correct 292 ms 22596 KB Output is correct
66 Correct 426 ms 34048 KB Output is correct
67 Correct 105 ms 21816 KB Output is correct
68 Correct 236 ms 25276 KB Output is correct
69 Correct 245 ms 25600 KB Output is correct
70 Correct 222 ms 24476 KB Output is correct