답안 #37740 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
37740	2017-12-27T13:12:09 Z	DenXman111	Hard route (IZhO17_road)	C++14	19 / 100	2000 ms	156264 KB

road

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cmath>
#include <map>
#include <vector>
#include <cstring>
#include <iomanip>
#include <set>
#include <sstream>
#include <ctime>

#define rust(a, b, c, d) sqrt(sqr(a - c) + sqr(b - d))
#define sqr(a) (a)*(a)
#define p_b push_back
#define m_p make_pair
#define fi first
#define se second
#define endl "\n"

typedef long long ll;
typedef long double ld;
const int MAXINT = 2147483640;
const ll MAXLL = 9223372036854775800LL;
const ll MAXN = 1123456;
const ll MOD = 1123456769;
using namespace std;

vector < int > ss[MAXN];
vector < pair < int, int > > ways[MAXN];
int len[MAXN];
void dfs(int v, int pr){
    multiset < int > s;
    ways[v].clear();
    len[v] = 0;
    for (int i = 0; i < ss[v].size(); i++) if (ss[v][i] != pr) {
        dfs(ss[v][i], v);
        len[v] = max(len[v], len[ss[v][i]] + 1);
        s.insert(len[ss[v][i]] + 1);
    }

    for (int i = 0; i < ss[v].size(); i++) if (ss[v][i] != pr) {
        set < int > :: iterator it = --(s.end());
        int x = ss[v][i];
        if (len[x] + 1 == *it) --it;
        int y = 0;
        if (s.size() > 1) y = *it;
        for (int j = 0; j < ways[x].size(); j++) ways[v].p_b(m_p(ways[x][j].fi + 1, max(ways[x][j].se, y)));
    }
    if (ss[v].size() == 1 && pr != 0) ways[v].p_b(m_p(0, 0)), len[v] = 0;
}
int main()
{
//    freopen("road.in", "r", stdin);
//    freopen("road.out", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    srand(time(0));
    int n, m, i, j, x, y;
    cin >> n;
    for (i = 1; i < n; i++){
        cin >> x >> y;
        ss[x].p_b(y);
        ss[y].p_b(x);
    }
    vector < ll > ans;
    for (i = 1; i <= n; i++) if (ss[i].size() == 1) {
        dfs(i, 0);
        for (j = 0; j < ways[i].size(); j++) ans.p_b(ll(ways[i][j].fi) * ways[i][j].se);
    }
    sort(ans.begin(), ans.end());
    if (ans.size()) x = ans.back(); else x = 0;
    y = 0;
    for (i = ans.size() - 1; i >= 0; i--) if (ans[i] == x) ++y;
    cout << x << " " << y / 2 << endl;
    return 0;
}

Compilation message

road.cpp: In function 'void dfs(int, int)':
road.cpp:39:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < ss[v].size(); i++) if (ss[v][i] != pr) {
                       ^
road.cpp:45:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < ss[v].size(); i++) if (ss[v][i] != pr) {
                       ^
road.cpp:51:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = 0; j < ways[x].size(); j++) ways[v].p_b(m_p(ways[x][j].fi + 1, max(ways[x][j].se, y)));
                           ^
road.cpp: In function 'int main()':
road.cpp:72:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (j = 0; j < ways[i].size(); j++) ans.p_b(ll(ways[i][j].fi) * ways[i][j].se);
                       ^
road.cpp:62:12: warning: unused variable 'm' [-Wunused-variable]
     int n, m, i, j, x, y;
            ^

Subtask #1
19.0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	59232 KB	Output is correct
2	Correct	13 ms	59232 KB	Output is correct
3	Correct	16 ms	59232 KB	Output is correct
4	Correct	13 ms	59232 KB	Output is correct
5	Correct	9 ms	59232 KB	Output is correct
6	Correct	6 ms	59232 KB	Output is correct
7	Correct	23 ms	59232 KB	Output is correct
8	Correct	16 ms	59232 KB	Output is correct
9	Correct	16 ms	59232 KB	Output is correct
10	Correct	9 ms	59232 KB	Output is correct
11	Correct	19 ms	59368 KB	Output is correct
12	Correct	16 ms	59368 KB	Output is correct
13	Correct	19 ms	59368 KB	Output is correct
14	Correct	19 ms	59368 KB	Output is correct
15	Correct	16 ms	59232 KB	Output is correct
16	Correct	19 ms	59232 KB	Output is correct
17	Correct	16 ms	59232 KB	Output is correct
18	Correct	26 ms	59232 KB	Output is correct
19	Correct	13 ms	59232 KB	Output is correct
20	Correct	13 ms	59232 KB	Output is correct
21	Correct	13 ms	59232 KB	Output is correct
22	Correct	16 ms	59232 KB	Output is correct
23	Correct	6 ms	59232 KB	Output is correct
24	Correct	9 ms	59548 KB	Output is correct

Subtask #2
0 / 33.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	59232 KB	Output is correct
2	Correct	13 ms	59232 KB	Output is correct
3	Correct	16 ms	59232 KB	Output is correct
4	Correct	13 ms	59232 KB	Output is correct
5	Correct	9 ms	59232 KB	Output is correct
6	Correct	6 ms	59232 KB	Output is correct
7	Correct	23 ms	59232 KB	Output is correct
8	Correct	16 ms	59232 KB	Output is correct
9	Correct	16 ms	59232 KB	Output is correct
10	Correct	9 ms	59232 KB	Output is correct
11	Correct	19 ms	59368 KB	Output is correct
12	Correct	16 ms	59368 KB	Output is correct
13	Correct	19 ms	59368 KB	Output is correct
14	Correct	19 ms	59368 KB	Output is correct
15	Correct	16 ms	59232 KB	Output is correct
16	Correct	19 ms	59232 KB	Output is correct
17	Correct	16 ms	59232 KB	Output is correct
18	Correct	26 ms	59232 KB	Output is correct
19	Correct	13 ms	59232 KB	Output is correct
20	Correct	13 ms	59232 KB	Output is correct
21	Correct	13 ms	59232 KB	Output is correct
22	Correct	16 ms	59232 KB	Output is correct
23	Correct	6 ms	59232 KB	Output is correct
24	Correct	9 ms	59548 KB	Output is correct
25	Correct	1486 ms	156256 KB	Output is correct
26	Correct	1516 ms	156264 KB	Output is correct
27	Correct	1343 ms	156180 KB	Output is correct
28	Correct	1326 ms	156256 KB	Output is correct
29	Execution timed out	2000 ms	119624 KB	Execution timed out
30	Halted	0 ms	0 KB	-

Subtask #3
0 / 48.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	59232 KB	Output is correct
2	Correct	13 ms	59232 KB	Output is correct
3	Correct	16 ms	59232 KB	Output is correct
4	Correct	13 ms	59232 KB	Output is correct
5	Correct	9 ms	59232 KB	Output is correct
6	Correct	6 ms	59232 KB	Output is correct
7	Correct	23 ms	59232 KB	Output is correct
8	Correct	16 ms	59232 KB	Output is correct
9	Correct	16 ms	59232 KB	Output is correct
10	Correct	9 ms	59232 KB	Output is correct
11	Correct	19 ms	59368 KB	Output is correct
12	Correct	16 ms	59368 KB	Output is correct
13	Correct	19 ms	59368 KB	Output is correct
14	Correct	19 ms	59368 KB	Output is correct
15	Correct	16 ms	59232 KB	Output is correct
16	Correct	19 ms	59232 KB	Output is correct
17	Correct	16 ms	59232 KB	Output is correct
18	Correct	26 ms	59232 KB	Output is correct
19	Correct	13 ms	59232 KB	Output is correct
20	Correct	13 ms	59232 KB	Output is correct
21	Correct	13 ms	59232 KB	Output is correct
22	Correct	16 ms	59232 KB	Output is correct
23	Correct	6 ms	59232 KB	Output is correct
24	Correct	9 ms	59548 KB	Output is correct
25	Correct	1486 ms	156256 KB	Output is correct
26	Correct	1516 ms	156264 KB	Output is correct
27	Correct	1343 ms	156180 KB	Output is correct
28	Correct	1326 ms	156256 KB	Output is correct
29	Execution timed out	2000 ms	119624 KB	Execution timed out
30	Halted	0 ms	0 KB	-

답안 #37740

Compilation message

Subtask #1 19.0 / 19.0

Subtask #2 0 / 33.0

Subtask #3 0 / 48.0

Subtask #1
19.0 / 19.0

Subtask #2
0 / 33.0

Subtask #3
0 / 48.0