oj.uz

답안 #160648

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
160648 2019-10-29T06:05:06 Z jhnah917 경주 (Race) (IOI11_race) C++14
100 / 100
 635 ms 31980 KB 
#include "race.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define compress(v) sort(all(v)), v.erase(unique(all(v)), v.end())
#define pb push_back
using namespace std;

typedef pair<int, int> p;

int n, k;
vector<p> g[202020];
vector<int> init;

int sz[202020], use[202020], chk[1010101];

int getSize(int v, int par){
    sz[v] = 1;
    for(auto i : g[v]){
        if(i.x == par || use[i.x]) continue;
        sz[v] += getSize(i.x, v);
    }
    return sz[v];
}

int getCent(int v, int par, int cnt){
    for(auto i : g[v]){
        if(i.x == par || use[i.x]) continue;
        if(sz[i.x] > cnt/2) return getCent(i.x, v, cnt);
    }
    return v;
}

void update(int now, int prv, int dst, int dep){
    if(dst > k) return;
    chk[dst] = min(chk[dst], dep);
    init.push_back(dst);
    for(auto i : g[now]){
        if(i.x == prv || use[i.x]) continue;
        update(i.x, now, dst + i.y, dep + 1);
    }
}

int calc(int now, int prv, int dst, int dep){
    int ret = 1e9+7;
    if(dst > k) return ret;
    if(chk[k-dst] < 1e9){
        ret = chk[k-dst] + dep;
    }
    for(auto i : g[now]){
        if(use[i.x] || i.x == prv) continue;
        ret = min(ret, calc(i.x, now, dst + i.y, dep + 1));
    }
    return ret;
}

int solve(int v){
    int cnt = getSize(v, -1);
    int cent = getCent(v, -1, cnt); use[cent] = 1;
    int ret = 1e9+7;
    for(auto i : init){
        chk[i] = 1e9+7;
    }
    init.clear();
    chk[0] = 0;

    for(auto i : g[cent]){
        if(use[i.x]) continue;
        //cout << "calc start\n";
        ret = min(ret, calc(i.x, cent, i.y, 1));
        //cout << "calc end\nupdate start\n";
        update(i.x, cent, i.y, 1);
        //cout << "update end\n";
    }
    for(auto i : g[cent]){
        if(use[i.x]) continue;
        ret = min(ret, solve(i.x));
    }
    return ret;
}

int best_path(int N, int K, int H[][2], int L[]){
	n=N; k=K;
 
	for(int i=0;i<n-1;i++){
		g[H[i][0]].push_back({H[i][1],L[i]});
		g[H[i][1]].push_back({H[i][0],L[i]});
	}
    memset(chk, 0x3f, sizeof chk);
	int ans = solve(0);
 
	if(ans > 1e9) return -1;
	return ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9080 KB Output is correct
2 Correct 9 ms 9080 KB Output is correct
3 Correct 9 ms 9084 KB Output is correct
4 Correct 9 ms 9080 KB Output is correct
5 Correct 10 ms 9080 KB Output is correct
6 Correct 9 ms 9080 KB Output is correct
7 Correct 10 ms 9080 KB Output is correct
8 Correct 10 ms 9080 KB Output is correct
9 Correct 10 ms 9080 KB Output is correct
10 Correct 10 ms 9080 KB Output is correct
11 Correct 10 ms 9080 KB Output is correct
12 Correct 10 ms 9080 KB Output is correct
13 Correct 10 ms 8980 KB Output is correct
14 Correct 10 ms 9080 KB Output is correct
15 Correct 10 ms 9080 KB Output is correct
16 Correct 10 ms 9084 KB Output is correct
17 Correct 10 ms 9080 KB Output is correct
18 Correct 11 ms 9080 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9080 KB Output is correct
2 Correct 9 ms 9080 KB Output is correct
3 Correct 9 ms 9084 KB Output is correct
4 Correct 9 ms 9080 KB Output is correct
5 Correct 10 ms 9080 KB Output is correct
6 Correct 9 ms 9080 KB Output is correct
7 Correct 10 ms 9080 KB Output is correct
8 Correct 10 ms 9080 KB Output is correct
9 Correct 10 ms 9080 KB Output is correct
10 Correct 10 ms 9080 KB Output is correct
11 Correct 10 ms 9080 KB Output is correct
12 Correct 10 ms 9080 KB Output is correct
13 Correct 10 ms 8980 KB Output is correct
14 Correct 10 ms 9080 KB Output is correct
15 Correct 10 ms 9080 KB Output is correct
16 Correct 10 ms 9084 KB Output is correct
17 Correct 10 ms 9080 KB Output is correct
18 Correct 11 ms 9080 KB Output is correct
19 Correct 10 ms 9080 KB Output is correct
20 Correct 10 ms 9080 KB Output is correct
21 Correct 11 ms 9080 KB Output is correct
22 Correct 11 ms 9080 KB Output is correct
23 Correct 11 ms 9080 KB Output is correct
24 Correct 11 ms 9080 KB Output is correct
25 Correct 11 ms 9080 KB Output is correct
26 Correct 10 ms 9080 KB Output is correct
27 Correct 10 ms 9080 KB Output is correct
28 Correct 10 ms 9080 KB Output is correct
29 Correct 11 ms 9080 KB Output is correct
30 Correct 11 ms 9080 KB Output is correct
31 Correct 12 ms 9052 KB Output is correct
32 Correct 11 ms 9080 KB Output is correct
33 Correct 11 ms 9080 KB Output is correct
34 Correct 10 ms 9080 KB Output is correct
35 Correct 10 ms 9080 KB Output is correct
36 Correct 10 ms 9080 KB Output is correct
37 Correct 10 ms 9080 KB Output is correct
38 Correct 14 ms 9080 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9080 KB Output is correct
2 Correct 9 ms 9080 KB Output is correct
3 Correct 9 ms 9084 KB Output is correct
4 Correct 9 ms 9080 KB Output is correct
5 Correct 10 ms 9080 KB Output is correct
6 Correct 9 ms 9080 KB Output is correct
7 Correct 10 ms 9080 KB Output is correct
8 Correct 10 ms 9080 KB Output is correct
9 Correct 10 ms 9080 KB Output is correct
10 Correct 10 ms 9080 KB Output is correct
11 Correct 10 ms 9080 KB Output is correct
12 Correct 10 ms 9080 KB Output is correct
13 Correct 10 ms 8980 KB Output is correct
14 Correct 10 ms 9080 KB Output is correct
15 Correct 10 ms 9080 KB Output is correct
16 Correct 10 ms 9084 KB Output is correct
17 Correct 10 ms 9080 KB Output is correct
18 Correct 11 ms 9080 KB Output is correct
19 Correct 171 ms 16092 KB Output is correct
20 Correct 172 ms 16120 KB Output is correct
21 Correct 188 ms 16248 KB Output is correct
22 Correct 177 ms 16556 KB Output is correct
23 Correct 120 ms 16404 KB Output is correct
24 Correct 89 ms 16376 KB Output is correct
25 Correct 194 ms 18128 KB Output is correct
26 Correct 118 ms 20740 KB Output is correct
27 Correct 227 ms 23388 KB Output is correct
28 Correct 412 ms 31736 KB Output is correct
29 Correct 401 ms 31012 KB Output is correct
30 Correct 201 ms 23456 KB Output is correct
31 Correct 212 ms 23472 KB Output is correct
32 Correct 244 ms 23532 KB Output is correct
33 Correct 350 ms 22244 KB Output is correct
34 Correct 315 ms 23192 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9080 KB Output is correct
2 Correct 9 ms 9080 KB Output is correct
3 Correct 9 ms 9084 KB Output is correct
4 Correct 9 ms 9080 KB Output is correct
5 Correct 10 ms 9080 KB Output is correct
6 Correct 9 ms 9080 KB Output is correct
7 Correct 10 ms 9080 KB Output is correct
8 Correct 10 ms 9080 KB Output is correct
9 Correct 10 ms 9080 KB Output is correct
10 Correct 10 ms 9080 KB Output is correct
11 Correct 10 ms 9080 KB Output is correct
12 Correct 10 ms 9080 KB Output is correct
13 Correct 10 ms 8980 KB Output is correct
14 Correct 10 ms 9080 KB Output is correct
15 Correct 10 ms 9080 KB Output is correct
16 Correct 10 ms 9084 KB Output is correct
17 Correct 10 ms 9080 KB Output is correct
18 Correct 11 ms 9080 KB Output is correct
19 Correct 10 ms 9080 KB Output is correct
20 Correct 10 ms 9080 KB Output is correct
21 Correct 11 ms 9080 KB Output is correct
22 Correct 11 ms 9080 KB Output is correct
23 Correct 11 ms 9080 KB Output is correct
24 Correct 11 ms 9080 KB Output is correct
25 Correct 11 ms 9080 KB Output is correct
26 Correct 10 ms 9080 KB Output is correct
27 Correct 10 ms 9080 KB Output is correct
28 Correct 10 ms 9080 KB Output is correct
29 Correct 11 ms 9080 KB Output is correct
30 Correct 11 ms 9080 KB Output is correct
31 Correct 12 ms 9052 KB Output is correct
32 Correct 11 ms 9080 KB Output is correct
33 Correct 11 ms 9080 KB Output is correct
34 Correct 10 ms 9080 KB Output is correct
35 Correct 10 ms 9080 KB Output is correct
36 Correct 10 ms 9080 KB Output is correct
37 Correct 10 ms 9080 KB Output is correct
38 Correct 14 ms 9080 KB Output is correct
39 Correct 171 ms 16092 KB Output is correct
40 Correct 172 ms 16120 KB Output is correct
41 Correct 188 ms 16248 KB Output is correct
42 Correct 177 ms 16556 KB Output is correct
43 Correct 120 ms 16404 KB Output is correct
44 Correct 89 ms 16376 KB Output is correct
45 Correct 194 ms 18128 KB Output is correct
46 Correct 118 ms 20740 KB Output is correct
47 Correct 227 ms 23388 KB Output is correct
48 Correct 412 ms 31736 KB Output is correct
49 Correct 401 ms 31012 KB Output is correct
50 Correct 201 ms 23456 KB Output is correct
51 Correct 212 ms 23472 KB Output is correct
52 Correct 244 ms 23532 KB Output is correct
53 Correct 350 ms 22244 KB Output is correct
54 Correct 315 ms 23192 KB Output is correct
55 Correct 20 ms 9836 KB Output is correct
56 Correct 21 ms 9976 KB Output is correct
57 Correct 107 ms 16756 KB Output is correct
58 Correct 51 ms 16876 KB Output is correct
59 Correct 120 ms 20636 KB Output is correct
60 Correct 599 ms 31980 KB Output is correct
61 Correct 247 ms 23800 KB Output is correct
62 Correct 255 ms 24352 KB Output is correct
63 Correct 337 ms 24388 KB Output is correct
64 Correct 635 ms 24684 KB Output is correct
65 Correct 300 ms 24312 KB Output is correct
66 Correct 562 ms 29692 KB Output is correct
67 Correct 158 ms 25976 KB Output is correct
68 Correct 337 ms 24856 KB Output is correct
69 Correct 320 ms 24944 KB Output is correct
70 Correct 303 ms 24140 KB Output is correct