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Submission #913414

# Submission time Handle Problem Language Result Execution time Memory
913414 2024-01-20T07:50:09 Z MilosMilutinovic Hard route (IZhO17_road) C++14
19 / 100
 2000 ms 7056 KB 
#include<bits/stdc++.h>
 
#define pb push_back
#define fi first
#define se second
#define mp make_pair
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;
 
template <typename T> bool chkmin(T &x,T y){return x>y?x=y,1:0;}
template <typename T> bool chkmax(T &x,T y){return x<y?x=y,1:0;}
 
ll readint(){
	ll x=0,f=1; char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}

int n,tot;
int v[1000005],nxt[1000005],h[500005],mx[500005],cnt[500005];

void addedge(int x,int y){
	v[++tot]=y; nxt[tot]=h[x]; h[x]=tot;
	v[++tot]=x; nxt[tot]=h[y]; h[y]=tot;
}

void dfs(int x,int px,int d){
	mx[x]=d;
	cnt[x]=1;
	for(int p=h[x];p;p=nxt[p]){
		if(v[p]==px) continue;
		dfs(v[p],x,d+1);
		if(mx[v[p]]==mx[x]) cnt[x]+=cnt[v[p]];
		else if(mx[x]<mx[v[p]]) cnt[x]=cnt[v[p]];
		mx[x]=max(mx[x],mx[v[p]]);
	}
}

int main(){
	n=readint();
	for(int i=1;i<n;i++) addedge(readint(),readint());
	ll res=0,c=1;
	for(int i=1;i<=n;i++){
		dfs(i,i,0);
		vector<pii> f;
		for(int p=h[i];p;p=nxt[p]) f.pb(mp(mx[v[p]],cnt[v[p]]));
		sort(f.rbegin(),f.rend());
		if((int)f.size()<=2) continue;
		ll cur=0,cc=0;
		cur=f[0].fi*(f[1].fi+f[2].fi);
		for(int x=0;x<f.size();x++){
			for(int y=x+1;y<f.size();y++){
				int fir=0;
				for(int z=0;z<f.size();z++) if(x!=z&&y!=z) fir=max(fir,f[z].fi);
				if(fir*(f[x].fi+f[y].fi)==cur) cc+=f[x].se*f[y].se;
			}
		}
		if(res<cur) res=cur,c=cc;
		else if(res==cur) c+=cc;
	}
	printf("%lld %lld\n",res,c);
	return 0;
}

Compilation message

road.cpp: In function 'int main()':
road.cpp:58:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |   for(int x=0;x<f.size();x++){
      |               ~^~~~~~~~~
road.cpp:59:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |    for(int y=x+1;y<f.size();y++){
      |                  ~^~~~~~~~~
road.cpp:61:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for(int z=0;z<f.size();z++) if(x!=z&&y!=z) fir=max(fir,f[z].fi);
      |                 ~^~~~~~~~~

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6900 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6588 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6488 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6704 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct

Subtask #2
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6900 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6588 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6488 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6704 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 277 ms 7020 KB Output is correct
26 Correct 257 ms 6748 KB Output is correct
27 Correct 249 ms 6904 KB Output is correct
28 Correct 280 ms 6860 KB Output is correct
29 Correct 231 ms 6860 KB Output is correct
30 Correct 225 ms 7004 KB Output is correct
31 Correct 218 ms 6864 KB Output is correct
32 Correct 220 ms 6748 KB Output is correct
33 Correct 295 ms 6956 KB Output is correct
34 Correct 248 ms 6960 KB Output is correct
35 Correct 287 ms 6956 KB Output is correct
36 Correct 281 ms 6956 KB Output is correct
37 Correct 445 ms 7056 KB Output is correct
38 Correct 477 ms 7004 KB Output is correct
39 Correct 450 ms 6824 KB Output is correct
40 Correct 442 ms 6744 KB Output is correct
41 Correct 467 ms 6708 KB Output is correct
42 Correct 407 ms 6692 KB Output is correct
43 Correct 410 ms 6680 KB Output is correct
44 Correct 387 ms 6676 KB Output is correct
45 Correct 379 ms 6668 KB Output is correct
46 Correct 717 ms 6672 KB Output is correct
47 Execution timed out 2021 ms 6676 KB Time limit exceeded
48 Halted 0 ms 0 KB -

Subtask #3
0 / 48.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 1 ms 6488 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6900 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6588 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6488 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6488 KB Output is correct
20 Correct 2 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6704 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 277 ms 7020 KB Output is correct
26 Correct 257 ms 6748 KB Output is correct
27 Correct 249 ms 6904 KB Output is correct
28 Correct 280 ms 6860 KB Output is correct
29 Correct 231 ms 6860 KB Output is correct
30 Correct 225 ms 7004 KB Output is correct
31 Correct 218 ms 6864 KB Output is correct
32 Correct 220 ms 6748 KB Output is correct
33 Correct 295 ms 6956 KB Output is correct
34 Correct 248 ms 6960 KB Output is correct
35 Correct 287 ms 6956 KB Output is correct
36 Correct 281 ms 6956 KB Output is correct
37 Correct 445 ms 7056 KB Output is correct
38 Correct 477 ms 7004 KB Output is correct
39 Correct 450 ms 6824 KB Output is correct
40 Correct 442 ms 6744 KB Output is correct
41 Correct 467 ms 6708 KB Output is correct
42 Correct 407 ms 6692 KB Output is correct
43 Correct 410 ms 6680 KB Output is correct
44 Correct 387 ms 6676 KB Output is correct
45 Correct 379 ms 6668 KB Output is correct
46 Correct 717 ms 6672 KB Output is correct
47 Execution timed out 2021 ms 6676 KB Time limit exceeded
48 Halted 0 ms 0 KB -