Submission #145061

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
145061	2019-08-18 16:11:31	MladenP	Hard route (IZhO17_road)	C++17	100 / 100	1121 ms	62456 KiB

road

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#include<bits/stdc++.h>
#define STIZE(x) fprintf(stderr, "STIZE%d\n", x);
#define PRINT(x) fprintf(stderr, "%s = %d\n", #x, x);
#define NL(x) printf("%c", " \n"[(x)]);
#define lld long long
#define pii pair<int,int>
#define pb push_back
#define fi first
#define se second
#define mid (l+r)/2
#define endl '\n'
#define all(a) begin(a),end(a)
#define sz(a) int((a).size())
#define LINF 1000000000000000LL
#define INF 1000000000
#define EPS 1e-9
using namespace std;
#define MAXN 500010
int N, A, B, X, Y, dist1[MAXN], dist2[MAXN], len[MAXN], cnt[MAXN], L[MAXN];
lld C[MAXN];
vector<int> adj[MAXN];
void dfsMerge(int node, int prev) {
    lld maxi1 = 0, maxi2 = 0;
    for(auto x : adj[node]) {
        if(x != prev) {
            dfsMerge(x, node);
            if(len[x]+1 >= maxi1) maxi2 = maxi1, maxi1 = len[x]+1;
            else if(len[x]+1 >= maxi2) maxi2 = len[x]+1;
        }
    }
 
 
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• Subtask 1: 19 / 19
• Subtask 2: 33 / 33
• Subtask 3: 48 / 48