Submission #353981

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
353981	2021-01-21 11:20:07	xt0r3	Race (IOI11_race)	C++14	100 / 100	1089 ms	42204 KiB

race

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include<bits/stdc++.h>
#include "race.h"
using namespace std;
constexpr int MAXN = 2*1e5 + 5, MAXK = 1e6 + 5, INF = 1e8;
bool visited[MAXN];
int c[MAXN], k, mini[MAXK];
vector<int> edges[MAXN], w[MAXN];
int cnt(int id){
    visited[id] = 1;
    c[id] = 1;
    for(int v : edges[id]) if(!visited[v]) c[id] += cnt(v);
    visited[id] = 0;
    return c[id];
}
int init(int id, int n, int p = -1){
    for(int v : edges[id]) if(c[v] > n/2 && !visited[v] && p != v) return init(v, n, id);
    return id;
}
int centroid(int id){
    return init(id, cnt(id));
}
int calc(int id, int len, int lvl = 1, int p = -1){
    int ret = INF;
    if(len <= k) ret = min(ret, mini[k-len] + lvl);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

race.cpp: In function 'int calc(int, int, int, int)':
race.cpp:31:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i = 0; i < edges[id].size(); i++){
      |                    ~~^~~~~~~~~~~~~~~~~~
race.cpp: In function 'void add(int, int, int, int)':
race.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     for(int i = 0; i < edges[id].size(); i++){
      |                    ~~^~~~~~~~~~~~~~~~~~
race.cpp: In function 'void res(int, int, int)':
race.cpp:48:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for(int i = 0; i < edges[id].size(); i++){
      |                    ~~^~~~~~~~~~~~~~~~~~
race.cpp: In function 'int db(int)':
race.cpp:57:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(int i = 0; i < edges[id].size(); i++){
      |                    ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57