Submission #1371169
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();
memset(used, 0, sizeof(used));
memset(cmp, 0, sizeof(cmp));
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) {
else {
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) scanf("%d%d", &x[i], &y[i]);
int l = 0, r = 10e9 / n + 10;
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
2017-06-23 12:17:58+0900
Task
F - Flags
User
KokiYmgch
Language
C++14 (GCC 5.4.1)
Score
0
Code Size
5509 Byte
Status
WA
Exec Time
5319 ms
Memory
777088 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; }
^
./Main.cpp: In function ‘int main()’:
./Main.cpp:137:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
rep(i, n) scanf("%d%d", &x[i], &y[i]);
^
Judge Result
Set Name
Sample
All
Score / Max Score
0 / 0
0 / 1200
Status
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
WA
2 ms
1152 KB
00_example_02.txt
AC
3 ms
1280 KB
00_example_03.txt
AC
3 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
2865 ms
8448 KB
07.txt
AC
2869 ms
10880 KB
08.txt
AC
2974 ms
10752 KB
09.txt
AC
14 ms
1408 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
4071 ms
8064 KB
15.txt
AC
4074 ms
8064 KB
16.txt
AC
4080 ms
8064 KB
17.txt
AC
22 ms
2688 KB
18.txt
AC
9 ms
1664 KB
19.txt
TLE
5277 ms
320640 KB
20.txt
TLE
5278 ms
340096 KB
21.txt
AC
579 ms
14080 KB
22.txt
AC
466 ms
10496 KB
23.txt
AC
14 ms
3072 KB
24.txt
TLE
5312 ms
719872 KB
25.txt
TLE
5319 ms
777088 KB
26.txt
TLE
5318 ms
744192 KB
27.txt
WA
2 ms
1152 KB