oj.uz

답안 #973862

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
973862 2024-05-02T12:01:14 Z PieArmy Hard route (IZhO17_road) C++17
100 / 100
 529 ms 101572 KB 
typedef long long ll;
ll pie(ll army){return (1ll<<army);}
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pb push_back
#define endl '\n'
#define mid ((left+right)>>1)
const ll inf=2000000000000000005;
const int sonsuz=2000000005;
using namespace std;
ll fpow(ll x,ll y,ll m=0){if(y<0){cout<<"powError";return -1;}if(m)x%=m;ll res=1;while(y>0){if(y&1)res*=x;x*=x;if(m){x%=m;res%=m;}y>>=1;}return res;}

int n;
ll dp[500001][3][3],ans=0,say=1;
vector<int>komsu[500001];

void ekle(int loc,int x,ll cnt){
    if(x>dp[loc][0][0]){
        swap(dp[loc][1],dp[loc][2]);
        swap(dp[loc][0],dp[loc][1]);
        dp[loc][0][0]=x;
        dp[loc][0][1]=0;
        dp[loc][0][2]=0;
    }
    else if(x>dp[loc][1][0]){
        swap(dp[loc][1],dp[loc][2]);
        dp[loc][1][0]=x;
        dp[loc][1][1]=0;
        dp[loc][1][2]=0;
        if(x==dp[loc][0][0]){
            dp[loc][1][1]=dp[loc][0][1];
            dp[loc][1][2]=dp[loc][0][2];
        }
    }
    else if(x>dp[loc][2][0]){
        dp[loc][2][0]=x;
        dp[loc][2][1]=0;
        dp[loc][2][2]=0;
        if(x==dp[loc][1][0]){
            dp[loc][2][1]=dp[loc][1][1];
            dp[loc][2][2]=dp[loc][1][2];
        }
    }
    for(int i=0;i<3;i++){
        if(x==dp[loc][i][0]){
            dp[loc][i][2]+=dp[loc][i][1]*cnt;
            dp[loc][i][1]+=cnt;
        }
    }
}

void dfs1(int pos,int root){
    dp[pos][0][1]=1;
    for(int x:komsu[pos]){
        if(x==root)continue;
        dfs1(x,pos);
        ekle(pos,dp[x][0][0]+1,dp[x][0][1]);
    }
}

void dfs2(int pos,int root){
    if(root){
        if(dp[root][0][0]-1==dp[pos][0][0]){
            ll y=dp[root][1][1];
            if(dp[root][1][0]-1==dp[pos][0][0]){
                y-=dp[pos][0][1];
            }
            ekle(pos,dp[root][1][0]+1,y);
        }
        else{
            ekle(pos,dp[root][0][0]+1,dp[root][0][1]);
        }
    }
    if(dp[pos][0][0]&&dp[pos][1][0]&&dp[pos][2][0]){
        ll art=0;
        if(dp[pos][1][0]==dp[pos][2][0]){
            art=dp[pos][1][2];
        }
        else{
            art=dp[pos][1][1]*dp[pos][2][1];
        }
        if(dp[pos][0][0]*(dp[pos][1][0]+dp[pos][2][0])>ans){
            ans=dp[pos][0][0]*(dp[pos][1][0]+dp[pos][2][0]);
            say=art;
        }
        else if(dp[pos][0][0]*(dp[pos][1][0]+dp[pos][2][0])==ans){
            say+=art;
        }
    }
    for(int x:komsu[pos]){
        if(x==root)continue;
        dfs2(x,pos);
    }
}

void code(){
    cin>>n;
    for(int i=1;i<n;i++){
        int a,b;cin>>a>>b;
        komsu[a].pb(b);
        komsu[b].pb(a);
    }
    dfs1(1,0);
    dfs2(1,0);
    cout<<ans<<" "<<say;
}

int main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);
	bool usaco=0;if(usaco){freopen(".in","r",stdin);freopen(".out","w",stdout);}
	int t=1;
	if(!t)cin>>t;
	while(t--){code();cout<<endl;}
    return 0;
}

Compilation message

road.cpp: In function 'int main()':
road.cpp:111:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  111 |  bool usaco=0;if(usaco){freopen(".in","r",stdin);freopen(".out","w",stdout);}
      |                         ~~~~~~~^~~~~~~~~~~~~~~~~
road.cpp:111:57: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  111 |  bool usaco=0;if(usaco){freopen(".in","r",stdin);freopen(".out","w",stdout);}
      |                                                  ~~~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12892 KB Output is correct
2 Correct 3 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 3 ms 12892 KB Output is correct
5 Correct 3 ms 13148 KB Output is correct
6 Correct 3 ms 12892 KB Output is correct
7 Correct 3 ms 12892 KB Output is correct
8 Correct 3 ms 12892 KB Output is correct
9 Correct 3 ms 12892 KB Output is correct
10 Correct 3 ms 12892 KB Output is correct
11 Correct 3 ms 12956 KB Output is correct
12 Correct 3 ms 12892 KB Output is correct
13 Correct 3 ms 12948 KB Output is correct
14 Correct 3 ms 12892 KB Output is correct
15 Correct 3 ms 12912 KB Output is correct
16 Correct 3 ms 12892 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 3 ms 12892 KB Output is correct
19 Correct 3 ms 12892 KB Output is correct
20 Correct 3 ms 12888 KB Output is correct
21 Correct 3 ms 12916 KB Output is correct
22 Correct 3 ms 12892 KB Output is correct
23 Correct 3 ms 12892 KB Output is correct
24 Correct 3 ms 13144 KB Output is correct

Subtask #2
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12892 KB Output is correct
2 Correct 3 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 3 ms 12892 KB Output is correct
5 Correct 3 ms 13148 KB Output is correct
6 Correct 3 ms 12892 KB Output is correct
7 Correct 3 ms 12892 KB Output is correct
8 Correct 3 ms 12892 KB Output is correct
9 Correct 3 ms 12892 KB Output is correct
10 Correct 3 ms 12892 KB Output is correct
11 Correct 3 ms 12956 KB Output is correct
12 Correct 3 ms 12892 KB Output is correct
13 Correct 3 ms 12948 KB Output is correct
14 Correct 3 ms 12892 KB Output is correct
15 Correct 3 ms 12912 KB Output is correct
16 Correct 3 ms 12892 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 3 ms 12892 KB Output is correct
19 Correct 3 ms 12892 KB Output is correct
20 Correct 3 ms 12888 KB Output is correct
21 Correct 3 ms 12916 KB Output is correct
22 Correct 3 ms 12892 KB Output is correct
23 Correct 3 ms 12892 KB Output is correct
24 Correct 3 ms 13144 KB Output is correct
25 Correct 4 ms 13148 KB Output is correct
26 Correct 4 ms 13148 KB Output is correct
27 Correct 4 ms 13144 KB Output is correct
28 Correct 4 ms 13144 KB Output is correct
29 Correct 4 ms 13148 KB Output is correct
30 Correct 4 ms 13148 KB Output is correct
31 Correct 4 ms 13148 KB Output is correct
32 Correct 5 ms 13404 KB Output is correct
33 Correct 4 ms 13148 KB Output is correct
34 Correct 4 ms 13148 KB Output is correct
35 Correct 4 ms 13148 KB Output is correct
36 Correct 5 ms 13148 KB Output is correct
37 Correct 4 ms 13148 KB Output is correct
38 Correct 4 ms 13400 KB Output is correct
39 Correct 5 ms 13148 KB Output is correct
40 Correct 5 ms 13148 KB Output is correct
41 Correct 4 ms 13344 KB Output is correct
42 Correct 5 ms 13148 KB Output is correct
43 Correct 5 ms 13148 KB Output is correct
44 Correct 4 ms 13148 KB Output is correct
45 Correct 4 ms 13144 KB Output is correct
46 Correct 5 ms 12892 KB Output is correct
47 Correct 4 ms 13148 KB Output is correct
48 Correct 4 ms 13148 KB Output is correct

Subtask #3
48.0 / 48.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 12892 KB Output is correct
2 Correct 3 ms 12892 KB Output is correct
3 Correct 3 ms 12892 KB Output is correct
4 Correct 3 ms 12892 KB Output is correct
5 Correct 3 ms 13148 KB Output is correct
6 Correct 3 ms 12892 KB Output is correct
7 Correct 3 ms 12892 KB Output is correct
8 Correct 3 ms 12892 KB Output is correct
9 Correct 3 ms 12892 KB Output is correct
10 Correct 3 ms 12892 KB Output is correct
11 Correct 3 ms 12956 KB Output is correct
12 Correct 3 ms 12892 KB Output is correct
13 Correct 3 ms 12948 KB Output is correct
14 Correct 3 ms 12892 KB Output is correct
15 Correct 3 ms 12912 KB Output is correct
16 Correct 3 ms 12892 KB Output is correct
17 Correct 3 ms 12892 KB Output is correct
18 Correct 3 ms 12892 KB Output is correct
19 Correct 3 ms 12892 KB Output is correct
20 Correct 3 ms 12888 KB Output is correct
21 Correct 3 ms 12916 KB Output is correct
22 Correct 3 ms 12892 KB Output is correct
23 Correct 3 ms 12892 KB Output is correct
24 Correct 3 ms 13144 KB Output is correct
25 Correct 4 ms 13148 KB Output is correct
26 Correct 4 ms 13148 KB Output is correct
27 Correct 4 ms 13144 KB Output is correct
28 Correct 4 ms 13144 KB Output is correct
29 Correct 4 ms 13148 KB Output is correct
30 Correct 4 ms 13148 KB Output is correct
31 Correct 4 ms 13148 KB Output is correct
32 Correct 5 ms 13404 KB Output is correct
33 Correct 4 ms 13148 KB Output is correct
34 Correct 4 ms 13148 KB Output is correct
35 Correct 4 ms 13148 KB Output is correct
36 Correct 5 ms 13148 KB Output is correct
37 Correct 4 ms 13148 KB Output is correct
38 Correct 4 ms 13400 KB Output is correct
39 Correct 5 ms 13148 KB Output is correct
40 Correct 5 ms 13148 KB Output is correct
41 Correct 4 ms 13344 KB Output is correct
42 Correct 5 ms 13148 KB Output is correct
43 Correct 5 ms 13148 KB Output is correct
44 Correct 4 ms 13148 KB Output is correct
45 Correct 4 ms 13144 KB Output is correct
46 Correct 5 ms 12892 KB Output is correct
47 Correct 4 ms 13148 KB Output is correct
48 Correct 4 ms 13148 KB Output is correct
49 Correct 330 ms 82004 KB Output is correct
50 Correct 347 ms 84244 KB Output is correct
51 Correct 347 ms 86096 KB Output is correct
52 Correct 342 ms 79440 KB Output is correct
53 Correct 275 ms 82816 KB Output is correct
54 Correct 274 ms 85144 KB Output is correct
55 Correct 273 ms 79696 KB Output is correct
56 Correct 285 ms 81848 KB Output is correct
57 Correct 292 ms 87284 KB Output is correct
58 Correct 295 ms 84560 KB Output is correct
59 Correct 332 ms 84652 KB Output is correct
60 Correct 297 ms 83540 KB Output is correct
61 Correct 525 ms 101572 KB Output is correct
62 Correct 500 ms 95568 KB Output is correct
63 Correct 499 ms 78996 KB Output is correct
64 Correct 529 ms 75220 KB Output is correct
65 Correct 478 ms 72532 KB Output is correct
66 Correct 465 ms 71248 KB Output is correct
67 Correct 519 ms 70812 KB Output is correct
68 Correct 471 ms 70224 KB Output is correct
69 Correct 515 ms 70236 KB Output is correct
70 Correct 512 ms 70136 KB Output is correct
71 Correct 457 ms 69948 KB Output is correct
72 Correct 471 ms 70184 KB Output is correct
73 Correct 509 ms 70120 KB Output is correct
74 Correct 451 ms 70224 KB Output is correct
75 Correct 460 ms 70308 KB Output is correct
76 Correct 464 ms 70328 KB Output is correct
77 Correct 340 ms 70980 KB Output is correct
78 Correct 241 ms 72128 KB Output is correct