oj.uz

Submission #486930

# Submission time Handle Problem Language Result Execution time Memory
486930 2021-11-13T12:36:04 Z jamezzz Road Construction (JOI21_road_construction) C++17
100 / 100
 1801 ms 15344 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

#ifdef DEBUG
#define dbg(...) printf(__VA_ARGS__);
#else
#define dbg(...)
#endif
#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb emplace_back
#define sz(x) (int)x.size()
#define mnto(x,y) x=min(x,(__typeof__(x))y)
#define mxto(x,y) x=max(x,(__typeof__(x))y)
#define INF 2023456789
#define LINF 1023456789123456789
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
typedef tuple<int, int, int, int> iiii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<pll> vll;
mt19937 rng(time(0));

#define maxn 250005

int n,k,x,y;
vi ans;
vii v;
set<ii> s;

int num(int d){
	s.clear();
	ans.clear();
	int l=0;
	for(int i=0;i<n;++i){
		while(v[l].fi+d<v[i].fi)s.erase({v[l].se,l++});
		auto it=s.lower_bound({v[i].se-d,-1});
		while(it!=s.end()){
			if(v[i].se+d>=it->fi){
				ans.pb(max(abs(v[i].fi-v[it->se].fi),abs(v[i].se-v[it->se].se)));
				++it;
			}
			else break;
			if(sz(ans)==k)break;
		}
		if(sz(ans)==k)break;
		s.insert({v[i].se,i});
	}
	return sz(ans);
}

main(){
	sf("%lld%lld",&n,&k);
	for(int i=0;i<n;++i){
		sf("%lld%lld",&x,&y);
		v.pb(x+y,x-y);
	}
	sort(all(v));
	int lo=1,hi=4000000000ll,mid,res;
	while(lo<=hi){
		mid=lo+(hi-lo)/2;
		if(num(mid)>=k)res=mid,hi=mid-1;
		else lo=mid+1;
	}
	num(res-1);
	sort(all(ans));
	while(sz(ans)!=k)ans.pb(res);
	for(int i:ans)pf("%lld\n",i);
}

Compilation message

road_construction.cpp: In function 'long long int num(long long int)':
road_construction.cpp:45:45: warning: operation on 'l' may be undefined [-Wsequence-point]
   45 |   while(v[l].fi+d<v[i].fi)s.erase({v[l].se,l++});
      |                                            ~^~
road_construction.cpp: At global scope:
road_construction.cpp:61:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   61 | main(){
      | ^~~~
road_construction.cpp: In function 'int main()':
road_construction.cpp:62:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |  sf("%lld%lld",&n,&k);
      |    ^
road_construction.cpp:64:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |   sf("%lld%lld",&x,&y);
      |     ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 120 ms 4956 KB Output is correct
2 Correct 127 ms 4984 KB Output is correct
3 Correct 113 ms 4976 KB Output is correct
4 Correct 110 ms 5092 KB Output is correct
5 Correct 119 ms 3848 KB Output is correct
6 Correct 3 ms 308 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 350 ms 9376 KB Output is correct
2 Correct 353 ms 9380 KB Output is correct
3 Correct 93 ms 4836 KB Output is correct
4 Correct 287 ms 9412 KB Output is correct
5 Correct 305 ms 9500 KB Output is correct
6 Correct 302 ms 9508 KB Output is correct
7 Correct 272 ms 8860 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 225 ms 4444 KB Output is correct
2 Correct 293 ms 4456 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 156 ms 7324 KB Output is correct
5 Correct 324 ms 9604 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 225 ms 4444 KB Output is correct
2 Correct 293 ms 4456 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 156 ms 7324 KB Output is correct
5 Correct 324 ms 9604 KB Output is correct
6 Correct 431 ms 9336 KB Output is correct
7 Correct 397 ms 9344 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 296 KB Output is correct
10 Correct 314 ms 9396 KB Output is correct
11 Correct 127 ms 7180 KB Output is correct
12 Correct 383 ms 9616 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 120 ms 4956 KB Output is correct
2 Correct 127 ms 4984 KB Output is correct
3 Correct 113 ms 4976 KB Output is correct
4 Correct 110 ms 5092 KB Output is correct
5 Correct 119 ms 3848 KB Output is correct
6 Correct 3 ms 308 KB Output is correct
7 Correct 881 ms 8020 KB Output is correct
8 Correct 863 ms 7936 KB Output is correct
9 Correct 109 ms 5092 KB Output is correct
10 Correct 472 ms 7164 KB Output is correct
11 Correct 283 ms 7164 KB Output is correct
12 Correct 354 ms 7932 KB Output is correct
13 Correct 412 ms 7076 KB Output is correct

Subtask #6
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 120 ms 4956 KB Output is correct
2 Correct 127 ms 4984 KB Output is correct
3 Correct 113 ms 4976 KB Output is correct
4 Correct 110 ms 5092 KB Output is correct
5 Correct 119 ms 3848 KB Output is correct
6 Correct 3 ms 308 KB Output is correct
7 Correct 350 ms 9376 KB Output is correct
8 Correct 353 ms 9380 KB Output is correct
9 Correct 93 ms 4836 KB Output is correct
10 Correct 287 ms 9412 KB Output is correct
11 Correct 305 ms 9500 KB Output is correct
12 Correct 302 ms 9508 KB Output is correct
13 Correct 272 ms 8860 KB Output is correct
14 Correct 225 ms 4444 KB Output is correct
15 Correct 293 ms 4456 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 156 ms 7324 KB Output is correct
18 Correct 324 ms 9604 KB Output is correct
19 Correct 431 ms 9336 KB Output is correct
20 Correct 397 ms 9344 KB Output is correct
21 Correct 1 ms 300 KB Output is correct
22 Correct 1 ms 296 KB Output is correct
23 Correct 314 ms 9396 KB Output is correct
24 Correct 127 ms 7180 KB Output is correct
25 Correct 383 ms 9616 KB Output is correct
26 Correct 881 ms 8020 KB Output is correct
27 Correct 863 ms 7936 KB Output is correct
28 Correct 109 ms 5092 KB Output is correct
29 Correct 472 ms 7164 KB Output is correct
30 Correct 283 ms 7164 KB Output is correct
31 Correct 354 ms 7932 KB Output is correct
32 Correct 412 ms 7076 KB Output is correct
33 Correct 1801 ms 15228 KB Output is correct
34 Correct 1799 ms 15224 KB Output is correct
35 Correct 1164 ms 14532 KB Output is correct
36 Correct 569 ms 15344 KB Output is correct
37 Correct 548 ms 15300 KB Output is correct
38 Correct 644 ms 14056 KB Output is correct