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답안 #152537

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
152537 2019-09-08T09:42:08 Z Kamisama 경주 (Race) (IOI11_race) C++14
100 / 100
 1185 ms 33644 KB 
#include <iostream>
#include <cstdio>
#include <iomanip>
#include <chrono>
#include <vector>
using namespace std;
const int maxn=2e5+7;
const int maxk=1e6+7;
const int inf=1e9+7;

struct Edges{
    int x,y,w;
};

int n,k,currentLab,res;
int subSize[maxn],lab[maxn],d[maxn],lv[maxn],f[maxk];
bool disabled[maxn];
vector<int> adj[maxn],tobeProcessed,depthList;
Edges e[maxn];

inline void CalcSize(const int &u){
    lab[u]=currentLab;
    subSize[u]=1;
    for(int i: adj[u]){
        int v=e[i].x+e[i].y-u;
        if(disabled[v] || lab[v]==currentLab) continue;
        CalcSize(v);
        subSize[u]+=subSize[v];
    }
}

inline int FindCentroid(int u){
    int halfSize=subSize[u]/2;
    while(true){
        int heavyVertex=-1;
        for(int i: adj[u]){
            int v=e[i].x+e[i].y-u;
            if(disabled[v] || subSize[v]>subSize[u]) continue;
            if(subSize[v]>halfSize){
                heavyVertex=v;
                break;
            }
        }
        if(heavyVertex==-1) break;
        u=heavyVertex;
    }
    return u;
}

inline void CalcDepth(const int &u){
    lab[u]=currentLab;
    if(d[u]>k) return;
    depthList.push_back(d[u]);
    for(int i: adj[u]){
        int v=e[i].x+e[i].y-u;
        if(disabled[v] || lab[v]==currentLab) continue;
        d[v]=d[u]+e[i].w;
        lv[v]=lv[u]+1;
        CalcDepth(v);
    }
}

inline void Query(const int &u){
    lab[u]=currentLab;
    if(d[u]>k) return;
    res=min(res,f[k-d[u]]+lv[u]);
    for(int i: adj[u]){
        int v=e[i].x+e[i].y-u;
        if(disabled[v] || lab[v]==currentLab) continue;
        Query(v);
    }
}

inline void Update(const int &u){
    lab[u]=currentLab;
    if(d[u]>k) return;
    f[d[u]]=min(f[d[u]],lv[u]);
    for(int i: adj[u]){
        int v=e[i].x+e[i].y-u;
        if(disabled[v] || lab[v]==currentLab) continue;
        Update(v);
    }
}

inline void ProcessTree(int u){
    currentLab++;
    CalcSize(u);
    u=FindCentroid(u);
    disabled[u]=true;
    for(int x: depthList) f[x]=inf;
    depthList.resize(0);
    lv[u]=d[u]=0;
    currentLab++;
    CalcDepth(u);
    f[0]=0;
    for(int i: adj[u]){
        int v=e[i].x+e[i].y-u;
        if(disabled[v]) continue;
        currentLab++; Query(v);
        currentLab++; Update(v);
        tobeProcessed.push_back(v);
    }
}

int best_path(int N, int K, int H[][2], int L[]){
    tie(n,k)=tie(N,K);
    for(int i=0;i<n-1;i++){
        e[i]={H[i][0]+1,H[i][1]+1,L[i]};
        adj[e[i].x].push_back(i);
        adj[e[i].y].push_back(i);
    }
  	fill(f,f+maxk+1,inf);
    res=inf; tobeProcessed.push_back(1);
    while(tobeProcessed.size()){
        int u=tobeProcessed.back();
        tobeProcessed.pop_back();
        ProcessTree(u);
    }
    return (res==inf)? -1 : res;
}

Compilation message

race.cpp: In function 'int best_path(int, int, int (*)[2], int*)':
race.cpp:112:8: warning: array subscript is above array bounds [-Warray-bounds]
    fill(f,f+maxk+1,inf);
    ~~~~^~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 8952 KB Output is correct
2 Correct 10 ms 8952 KB Output is correct
3 Correct 10 ms 8952 KB Output is correct
4 Correct 10 ms 8952 KB Output is correct
5 Correct 10 ms 8952 KB Output is correct
6 Correct 10 ms 8952 KB Output is correct
7 Correct 10 ms 8952 KB Output is correct
8 Correct 10 ms 8952 KB Output is correct
9 Correct 10 ms 8952 KB Output is correct
10 Correct 10 ms 8952 KB Output is correct
11 Correct 10 ms 8952 KB Output is correct
12 Correct 10 ms 8952 KB Output is correct
13 Correct 10 ms 8952 KB Output is correct
14 Correct 13 ms 8952 KB Output is correct
15 Correct 12 ms 8952 KB Output is correct
16 Correct 10 ms 8952 KB Output is correct
17 Correct 10 ms 8952 KB Output is correct
18 Correct 10 ms 8924 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 8952 KB Output is correct
2 Correct 10 ms 8952 KB Output is correct
3 Correct 10 ms 8952 KB Output is correct
4 Correct 10 ms 8952 KB Output is correct
5 Correct 10 ms 8952 KB Output is correct
6 Correct 10 ms 8952 KB Output is correct
7 Correct 10 ms 8952 KB Output is correct
8 Correct 10 ms 8952 KB Output is correct
9 Correct 10 ms 8952 KB Output is correct
10 Correct 10 ms 8952 KB Output is correct
11 Correct 10 ms 8952 KB Output is correct
12 Correct 10 ms 8952 KB Output is correct
13 Correct 10 ms 8952 KB Output is correct
14 Correct 13 ms 8952 KB Output is correct
15 Correct 12 ms 8952 KB Output is correct
16 Correct 10 ms 8952 KB Output is correct
17 Correct 10 ms 8952 KB Output is correct
18 Correct 10 ms 8924 KB Output is correct
19 Correct 10 ms 9080 KB Output is correct
20 Correct 10 ms 8952 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 11 ms 9080 KB Output is correct
27 Correct 11 ms 9080 KB Output is correct
28 Correct 12 ms 9088 KB Output is correct
29 Correct 11 ms 9080 KB Output is correct
30 Correct 11 ms 9080 KB Output is correct
31 Correct 11 ms 9080 KB Output is correct
32 Correct 11 ms 9148 KB Output is correct
33 Correct 14 ms 9080 KB Output is correct
34 Correct 11 ms 9080 KB Output is correct
35 Correct 12 ms 9080 KB Output is correct
36 Correct 11 ms 9084 KB Output is correct
37 Correct 11 ms 9080 KB Output is correct
38 Correct 11 ms 9080 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 8952 KB Output is correct
2 Correct 10 ms 8952 KB Output is correct
3 Correct 10 ms 8952 KB Output is correct
4 Correct 10 ms 8952 KB Output is correct
5 Correct 10 ms 8952 KB Output is correct
6 Correct 10 ms 8952 KB Output is correct
7 Correct 10 ms 8952 KB Output is correct
8 Correct 10 ms 8952 KB Output is correct
9 Correct 10 ms 8952 KB Output is correct
10 Correct 10 ms 8952 KB Output is correct
11 Correct 10 ms 8952 KB Output is correct
12 Correct 10 ms 8952 KB Output is correct
13 Correct 10 ms 8952 KB Output is correct
14 Correct 13 ms 8952 KB Output is correct
15 Correct 12 ms 8952 KB Output is correct
16 Correct 10 ms 8952 KB Output is correct
17 Correct 10 ms 8952 KB Output is correct
18 Correct 10 ms 8924 KB Output is correct
19 Correct 298 ms 17740 KB Output is correct
20 Correct 282 ms 17628 KB Output is correct
21 Correct 347 ms 17784 KB Output is correct
22 Correct 282 ms 18168 KB Output is correct
23 Correct 157 ms 17528 KB Output is correct
24 Correct 96 ms 17784 KB Output is correct
25 Correct 270 ms 19336 KB Output is correct
26 Correct 173 ms 21356 KB Output is correct
27 Correct 352 ms 26836 KB Output is correct
28 Correct 463 ms 33092 KB Output is correct
29 Correct 470 ms 32604 KB Output is correct
30 Correct 306 ms 26936 KB Output is correct
31 Correct 303 ms 26744 KB Output is correct
32 Correct 388 ms 26896 KB Output is correct
33 Correct 480 ms 26132 KB Output is correct
34 Correct 385 ms 27012 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 8952 KB Output is correct
2 Correct 10 ms 8952 KB Output is correct
3 Correct 10 ms 8952 KB Output is correct
4 Correct 10 ms 8952 KB Output is correct
5 Correct 10 ms 8952 KB Output is correct
6 Correct 10 ms 8952 KB Output is correct
7 Correct 10 ms 8952 KB Output is correct
8 Correct 10 ms 8952 KB Output is correct
9 Correct 10 ms 8952 KB Output is correct
10 Correct 10 ms 8952 KB Output is correct
11 Correct 10 ms 8952 KB Output is correct
12 Correct 10 ms 8952 KB Output is correct
13 Correct 10 ms 8952 KB Output is correct
14 Correct 13 ms 8952 KB Output is correct
15 Correct 12 ms 8952 KB Output is correct
16 Correct 10 ms 8952 KB Output is correct
17 Correct 10 ms 8952 KB Output is correct
18 Correct 10 ms 8924 KB Output is correct
19 Correct 10 ms 9080 KB Output is correct
20 Correct 10 ms 8952 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 11 ms 9080 KB Output is correct
27 Correct 11 ms 9080 KB Output is correct
28 Correct 12 ms 9088 KB Output is correct
29 Correct 11 ms 9080 KB Output is correct
30 Correct 11 ms 9080 KB Output is correct
31 Correct 11 ms 9080 KB Output is correct
32 Correct 11 ms 9148 KB Output is correct
33 Correct 14 ms 9080 KB Output is correct
34 Correct 11 ms 9080 KB Output is correct
35 Correct 12 ms 9080 KB Output is correct
36 Correct 11 ms 9084 KB Output is correct
37 Correct 11 ms 9080 KB Output is correct
38 Correct 11 ms 9080 KB Output is correct
39 Correct 298 ms 17740 KB Output is correct
40 Correct 282 ms 17628 KB Output is correct
41 Correct 347 ms 17784 KB Output is correct
42 Correct 282 ms 18168 KB Output is correct
43 Correct 157 ms 17528 KB Output is correct
44 Correct 96 ms 17784 KB Output is correct
45 Correct 270 ms 19336 KB Output is correct
46 Correct 173 ms 21356 KB Output is correct
47 Correct 352 ms 26836 KB Output is correct
48 Correct 463 ms 33092 KB Output is correct
49 Correct 470 ms 32604 KB Output is correct
50 Correct 306 ms 26936 KB Output is correct
51 Correct 303 ms 26744 KB Output is correct
52 Correct 388 ms 26896 KB Output is correct
53 Correct 480 ms 26132 KB Output is correct
54 Correct 385 ms 27012 KB Output is correct
55 Correct 26 ms 9848 KB Output is correct
56 Correct 29 ms 9976 KB Output is correct
57 Correct 159 ms 17944 KB Output is correct
58 Correct 61 ms 18676 KB Output is correct
59 Correct 182 ms 21548 KB Output is correct
60 Correct 1101 ms 33644 KB Output is correct
61 Correct 355 ms 27252 KB Output is correct
62 Correct 421 ms 27756 KB Output is correct
63 Correct 612 ms 27888 KB Output is correct
64 Correct 1185 ms 27796 KB Output is correct
65 Correct 421 ms 27540 KB Output is correct
66 Correct 738 ms 31736 KB Output is correct
67 Correct 173 ms 29552 KB Output is correct
68 Correct 518 ms 27888 KB Output is correct
69 Correct 538 ms 28032 KB Output is correct
70 Correct 505 ms 27084 KB Output is correct