oj.uz

Submission #37740

# Submission time Handle Problem Language Result Execution time Memory
37740 2017-12-27T13:12:09 Z DenXman111 Hard route (IZhO17_road) C++14
19 / 100
 2000 ms 156264 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 -