Submission #1371164


Source Code Expand

#include "bits/stdc++.h"
using namespace std;
#define OUT(x) cout << #x << " = " << x << endl
#define rep(i, n)             for (int (i) = 0; (i) < (int)(n); (i)++)
#define rer(i, l, r)          for (int (i) = (int)(l); (i) <= (int)(r); (i)++)
#define reu(i, l, r)          for (int (i) = (int)(l); (i) < (int)(r); (i)++)
#define all(x)                (x).begin(), (x).end()
#define rall(x)               (x).rbegin(), (x).rend()
template<typename T> void pv(T a, T b) { for (T i = a; i != b; i ++) cout << *i << " "; cout << endl; }
template<typename T, typename U> inline void amin(T &x, U y) { if (y < x) x = y; }
template<typename T, typename U> inline void amax(T &x, U y) { if (x < y) x = y; }
int in() { int x; scanf("%d", &x); return x; }
long long lin() { long long x; scanf("%lld", &x); return x; }

int V;
vector<int> g[20202];
vector<int> rg[20202];
vector<int> order;
bool used[20202];
int cmp[20202];

int n;
vector<int> x, y;

void add_edge(int from, int to) {
        g[from].push_back(to);
        rg[to].push_back(from);
}
void dfs(int v) {
        used[v] = true;
        for (auto i : g[v]) if (!used[i]) dfs(i);
        order.push_back(v);
}
void rdfs(int v, int k) {
        used[v] = true;
        cmp[v] = k;
        for (auto i : rg[v]) if (!used[i]) rdfs(i, k);
}
int StronglyConnectedComponent() {
        memset(used, 0, sizeof(used));
        order.clear();
        for (int i = 0; i < V; i ++) if (!used[i]) dfs(i);
        memset(used, 0, sizeof(used));
        int k = 0;
        for (int i = order.size() - 1; i >= 0; i --) if (!used[order[i]]) rdfs(order[i], k ++);
        return k;
}

bool B(int d) {
        rep(i, 20202) g[i].clear();
        rep(i, 20202) rg[i].clear();
        order.clear();
        rep(i, 20202) used[i] = 0;
        rep(i, 20202) cmp[i] = 0;

        int d1, d2, d3, d4;
        rep(i, n) reu(j, i + 1, n) {
                d1 = abs(x[i] - x[j]);
                d2 = abs(x[i] - y[j]);
                d3 = abs(y[i] - x[j]);
                d4 = abs(y[i] - y[j]);
                //OUT(d1);
                //OUT(d2);
                //OUT(d3);
                //OUT(d4);
                if (d1 >= d && d2 >= d && d3 >= d && d4 >= d) continue;
                else if (d1 < d && d2 < d && d3 < d && d4 < d) return false;
                else if (d1 >= d && d2 < d && d3 < d && d4 < d) {
                        add_edge(i + n, i);
                        add_edge(j + n, j);
                }
                else if (d1 < d && d2 >= d && d3 < d && d4 < d) {
                        add_edge(i + n, i);
                        add_edge(j, j + n);
                }
                else if (d1 < d && d2 < d && d3 >= d && d4 < d) {
                        add_edge(i, i + n);
                        add_edge(j + n, j);
                }
                else if (d1 < d && d2 < d && d3 < d && d4 >= d) {
                        add_edge(i, i + n);
                        add_edge(j, j + n);
                }
                else if (d1 >= d && d2 >= d && d3 < d && d4 < d) {
                        add_edge(i + n, i);
                }
                else if (d1 >= d && d2 < d && d3 >= d && d4 < d) {
                        add_edge(j + n, j);
                }
                else if (d1 >= d && d2 < d && d3 < d && d4 >= d) {
                        add_edge(i, j);
                        add_edge(i + n, j + n);
                        add_edge(j, i);
                        add_edge(j + n, i + n);
                }
                else if (d1 < d && d2 >= d && d3 >= d && d4 < d) {
                        add_edge(i, j + n);
                        add_edge(i + n, j);
                        add_edge(j + n, i);
                        add_edge(j, i + n);
                }
                else if (d1 < d && d2 >= d && d3 < d && d4 >= d) {
                        add_edge(j, j + n);
                }
                else if (d1 < d && d2 < d && d3 >= d && d4 >= d) {
                        add_edge(i, i + n);
                }
                else if (d1 >= d && d2 >= d && d3 >= d && d4 < d) {
                        add_edge(i + n, j);
                        add_edge(j + n, i);
                }
                else if (d1 >= d && d2 >= d && d3 < d && d4 >= d) {
                        add_edge(i + n, j + n);
                        add_edge(j, i);
                }
                else if (d1 >= d && d2 < d && d3 >= d && d4 >= d) {
                        add_edge(i, j);
                        add_edge(j + n, i + n);
                }
                else if (d1 < d && d2 >= d && d3 >= d && d4 >= d) {
                        add_edge(i, j + n);
                        add_edge(j, i + n);
                }
        }
        StronglyConnectedComponent();
        rep(i, n) if (cmp[i] == cmp[i + n]) return false;
        return true;
}

static const int INF = 0x3f3f3f3f;

signed main() { 
        cin >> n;
        V = 2 * n;
        x.resize(n), y.resize(n);
        rep(i, n) cin >> x[i] >> y[i];
        int l = 0, r = INF;
        while (r - l > 1) {
                int mid = (l + r) / 2;
                //OUT(r);
                //OUT(l);
                //OUT(mid);
                if (B(mid)) l = mid;
                else r = mid;
        }
        cout << l << endl;
        return 0;
}               

Submission Info

Submission Time
Task F - Flags
User KokiYmgch
Language C++14 (GCC 5.4.1)
Score 0
Code Size 5458 Byte
Status TLE
Exec Time 5320 ms
Memory 860256 KB

Compile Error

./Main.cpp: In function ‘int in()’:
./Main.cpp:12:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 int in() { int x; scanf("%d", &x); return x; }
                                  ^
./Main.cpp: In function ‘long long int lin()’:
./Main.cpp:13:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 long long lin() { long long x; scanf("%lld", &x); return x; }
                                                 ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 1200
Status
AC × 3
AC × 25
TLE × 5
Set Name Test Cases
Sample 00_example_01.txt, 00_example_02.txt, 00_example_03.txt
All 00_example_01.txt, 00_example_02.txt, 00_example_03.txt, 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt
Case Name Status Exec Time Memory
00_example_01.txt AC 4 ms 1280 KB
00_example_02.txt AC 3 ms 1280 KB
00_example_03.txt AC 4 ms 1280 KB
01.txt AC 10 ms 1408 KB
02.txt AC 5 ms 1280 KB
03.txt AC 4 ms 1280 KB
04.txt AC 4 ms 1280 KB
05.txt AC 4 ms 1280 KB
06.txt AC 2805 ms 9216 KB
07.txt AC 2799 ms 8960 KB
08.txt AC 2900 ms 10752 KB
09.txt AC 15 ms 1536 KB
10.txt AC 6 ms 1408 KB
11.txt AC 4 ms 1280 KB
12.txt AC 4 ms 1280 KB
13.txt AC 4 ms 1280 KB
14.txt AC 4478 ms 24064 KB
15.txt AC 4448 ms 21504 KB
16.txt AC 4465 ms 22912 KB
17.txt AC 21 ms 2688 KB
18.txt AC 10 ms 1664 KB
19.txt TLE 5277 ms 335632 KB
20.txt TLE 5280 ms 345728 KB
21.txt AC 561 ms 14080 KB
22.txt AC 462 ms 10496 KB
23.txt AC 22 ms 2944 KB
24.txt TLE 5313 ms 719872 KB
25.txt TLE 5311 ms 768640 KB
26.txt TLE 5320 ms 860256 KB
27.txt AC 4 ms 1280 KB