Submission #1371128


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[10101];
vector<int> rg[10101];
vector<int> order;
bool used[10101];
int cmp[10101];

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, 10101) g[i].clear();
        rep(i, 10101) rg[i].clear();
        order.clear();
        rep(i, 10101) used[i] = 0;
        rep(i, 10101) 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]);
                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;
                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 5263 Byte
Status RE
Exec Time 110 ms
Memory 2944 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 × 16
RE × 14
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 2 ms 768 KB
00_example_02.txt AC 2 ms 768 KB
00_example_03.txt AC 3 ms 768 KB
01.txt AC 9 ms 896 KB
02.txt AC 4 ms 768 KB
03.txt AC 3 ms 768 KB
04.txt AC 3 ms 768 KB
05.txt AC 3 ms 768 KB
06.txt RE 109 ms 896 KB
07.txt RE 108 ms 896 KB
08.txt RE 108 ms 896 KB
09.txt AC 14 ms 1024 KB
10.txt AC 5 ms 896 KB
11.txt AC 3 ms 768 KB
12.txt AC 3 ms 768 KB
13.txt AC 3 ms 768 KB
14.txt RE 109 ms 896 KB
15.txt RE 110 ms 896 KB
16.txt RE 109 ms 896 KB
17.txt AC 20 ms 2176 KB
18.txt AC 9 ms 1152 KB
19.txt RE 107 ms 896 KB
20.txt RE 108 ms 2944 KB
21.txt RE 105 ms 2944 KB
22.txt RE 105 ms 896 KB
23.txt RE 109 ms 1024 KB
24.txt RE 109 ms 1024 KB
25.txt RE 108 ms 1024 KB
26.txt RE 109 ms 896 KB
27.txt AC 2 ms 768 KB