#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pb push_back
#define x first
#define y second
#define pii pair<int, int>
#define p3i pair<pii, int>
#define pll pair<ll, ll>
#define p3l pair<pll, ll>
#define lseg L, (L+R)/2, N*2+1
#define rseg (L+R)/2+1, R, N*2+2
#define ub upper_bound
#define lb lower_bound
#define pq priority_queue
#define MN 1000000007
#define fox(k, x) for (int k=0; k<x; ++k)
#define fox1(k, x) for (int k=1; k<=x; ++k)
#define foxr(k, x) for (int k=x-1; k>=0; --k)
#define fox1r(k, x) for (int k=x; k>0; --k)
#define ms multiset
#define flood(x) memset(x, 0x3f3f3f3f, sizeof x)
#define drain(x) memset(x, 0, sizeof x)
#define rng() (rand() >> 3)*rand()
int n, p, a, b, c, d, t, total;
int x[100005], y[100050];
set<int> s;
vector<pair<int, pii> > v;
void ins(int X){
if (s.count(X)) s.erase(X);
else s.insert(X);
}
void run(int T){
c=p=0;
sort(v.begin(), v.end());
fox(l, v.size()){
//if (l) cout << v[l].x << ' ' << v[l].y.x << ' ' << v[l].y.y<< ' ' << *s.begin() << ' ' << (*(--s.end()))<< endl;
if (l>0){
d=(*--s.end())-*s.begin();
//cout << v[l].x << ' ' << v[l].y.x << ' ' << v[l].y.y << ' ' << d << endl;
if (T){
if (s.size()==2 && c<=total/2 && c+d*(v[l].x-v[l-1].x)>total/2){
if ((total/2-c)%d==0){
if (T==2){
cout << v[l-1].x+(total/2-c)/d << ' ' << *(--s.end()) << ' ' <<
v[l-1].x+(total/2-c)/d << ' ' << *(s.begin()) << ' ' << endl;
}
if (T==1){
cout << *(--s.end()) << ' ' <<v[l-1].x+(total/2-c)/d << ' ' <<
*(s.begin()) << ' ' << v[l-1].x+(total/2-c)/d << ' ' << endl;
}
exit(0);
//output the answer
}
}
}
}
if (l>0){
a=*s.begin();
b=*--s.end();
t=s.size();
c+=d*(v[l].x-v[l-1].x);
}
ins(v[l].y.x); ins(v[l].y.y);
if (s.empty()) continue;
if (l>0){
a=max(a, *s.begin());
b=min(b, *--s.end());
}
if (c==total/2 && s.size()==2 && T && t==2){
//cout << "*";
if (T==2){
cout << v[l].x << ' ' << b << ' ' <<
v[l].x << ' ' << a << ' ' << endl;
}
if (T==1){
cout << b << ' ' <<v[l].x << ' ' <<
a << ' ' << v[l].x << ' ' << endl;
}
exit(0);
}
}
total=c;
}
int main(){
scanf("%i", &n);
fox(l, n){
scanf("%i%i", &x[l], &y[l]);
}
fox(l, n){
if (x[l]==x[(l+1)%n]){
v.pb(mp(x[l], mp(min(y[l], y[(l+1)%n]), max(y[l], y[(l+1)%n]))));
}
}
run(0);
//cout<< total << endl;
if (total%2){
printf("NO\n");
return 0;
}
run(1);
v.clear();
fox(l, n){
if (y[l]==y[(l+1)%n]){
v.pb(mp(y[l], mp(min(x[l], x[(l+1)%n]), max(x[l], x[(l+1)%n]))));
}
}
run(2);
cout << "NO";
return 0;
}
Compilation message
demarcation.cpp: In function 'void run(int)':
demarcation.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
#define fox(k, x) for (int k=0; k<x; ++k)
^
demarcation.cpp:38:5: note: in expansion of macro 'fox'
fox(l, v.size()){
^
demarcation.cpp: In function 'int main()':
demarcation.cpp:88:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i", &n);
^
demarcation.cpp:90:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i%i", &x[l], &y[l]);
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
3 ms |
2976 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
2804 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
2804 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
3 ms |
2976 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
