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답안 #1071520

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1071520 2024-08-23T08:05:21 Z 김은성(#11136) Cultivation (JOI17_cultivation) C++17
55 / 100
 2000 ms 780 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1.557e18;
vector<pair<ll, ll> > points;
ll r, c;
vector<ll> crit;
ll loc[609], hic[609], gapc[609];
ll lotree[1<<11], hitree[1<<11], gaptree[1<<11];
void settree(int v, int l, int r){
	if(l==r){
		lotree[v] = loc[l];
		hitree[v] = hic[l];
		gaptree[v] = gapc[l];
	}
	else{
		int mid = (l+r)/2;
		settree(2*v, l, mid);
		settree(2*v+1, mid+1, r);
		lotree[v] = max(lotree[2*v], lotree[2*v+1]);
		hitree[v] = max(hitree[2*v], hitree[2*v+1]);
		gaptree[v] = max(gaptree[2*v], gaptree[2*v+1]);
	}
}
tuple<ll, ll, ll> maxquery(int v, int l, int r, int s, int e){
	if(e < l || r <s)
		return make_tuple(-INF, -INF, -INF);
	if(s<=l && r<=e)
		return make_tuple(lotree[v], hitree[v], gaptree[v]);
	int mid = (l+r)/2;
	tuple<ll, ll, ll> lt = maxquery(2*v, l, mid, s, e), rt = maxquery(2*v+1, mid+1, r, s, e);
	return make_tuple(max(get<0>(lt), get<0>(rt)), max(get<1>(lt), get<1>(rt)), max(get<2>(lt), get<2>(rt)));
}
void minc(ll rd, ll ru){
	crit.clear();
	for(auto [y, x]: points){
		crit.push_back(y - rd);
		crit.push_back(y + ru + 1);
	}
	crit.push_back(-INF);
	crit.push_back(INF);
	sort(crit.begin(), crit.end());
	crit.erase(unique(crit.begin(), crit.end()), crit.end());
	int sz = crit.size(), i, j;
	vector<vector<ll> > add(sz), del(sz);
	for(auto [y, x]: points){
		int lo = lower_bound(crit.begin(), crit.end(), y - rd) - crit.begin();
		int hi = lower_bound(crit.begin(), crit.end(), y + ru + 1) - crit.begin();
		//printf("y=%lld lo=%d hi=%d\n", y, lo, hi);
		add[lo].push_back(x);
		del[hi].push_back(x);
	}
	ll cd = 0, cu = 0, sum = 0;
	multiset<ll> s, gap;
	for(i=0; i<sz; i++){
		for(ll x: add[i]){
			auto it = s.insert(x);
			//printf("x=%lld s.size=%d\n", x, s.size());
			if(it != s.begin()){
				auto itl = --it;
				it++;
				gap.insert((*it) - (*itl));
				auto itr = ++it;
				it--;
				if(itr != s.end()){
					gap.insert((*itr) - (*it));
					gap.erase(gap.find((*itr) - (*itl)));
				}
			}
			else{
				auto itr = ++it;
				it--;
				if(itr != s.end()){
					gap.insert((*itr) - (*it));
				}
			}
		}
		for(ll x: del[i]){
			auto itr = s.erase(s.find(x));
			if(itr != s.end()){
				gap.erase(gap.find((*itr) - x));
				if(itr != s.begin()){
					auto itl = --itr;
					itr++;
					gap.erase(gap.find(x - (*itl)));
					gap.insert((*itr) - (*itl));
				}
			}
			else if(itr != s.begin()){
				auto itl = --itr;
				gap.erase(gap.find(x - (*itl)));
			}
		}
		if(s.empty()){
			loc[i] = INF;
			hic[i] = INF;
		}
		else{
			loc[i] = *(s.begin()) - 1;
			hic[i] = c - *(--s.end());
		}
		if(gap.empty())
			gapc[i] = -1;
		else
			gapc[i] = *(--gap.end()) -1;
		//printf("i=%d lo=%lld hi=%lld gap=%lld\n", i, loc[i], hic[i], gapc[i]);
	}
	settree(1, 0, sz-1);
}
int main(){
	ll y, x, rd, ru;
	int n, i, j;
	scanf("%lld %lld %d", &r, &c, &n);
	for(i=1; i<=n; i++){
		scanf("%lld %lld", &y, &x);
		points.push_back(make_pair(y, x));
	}
	vector<ll> critd, critu, critdu;
	for(auto [y, x]: points){
		critd.push_back(y - 1);
		critu.push_back(r - y);
	}
	for(auto [y1, x1]: points){
		for(auto [y2, x2]: points){
			critdu.push_back(abs(y2-y1) - 1);
		}
	}
	ll ans = INF;
	for(auto rd: critd){
		for(auto ru: critu){
			minc(0, rd+ru);
			int lo = upper_bound(crit.begin(), crit.end(), rd+1) - crit.begin() - 1;
			int hi = upper_bound(crit.begin(), crit.end(), rd+r) - crit.begin() - 1;
			tuple<ll, ll, ll> ret = maxquery(1, 0, (int)crit.size() -1, lo, hi);
			//printf("rd=%lld ru=%lld ret=%lld\n", rd, ru, rd+ru+max(get<0>(ret)+get<1>(ret), get<2>(ret)));
			//printf("lo=%lld hi=%lld gap=%lld\n", get<0>(ret), get<1>(ret), get<2>(ret));
			ans = min(ans, rd+ru+max(get<0>(ret)+get<1>(ret), get<2>(ret)));
		}
	}
	for(auto temp: critdu){
		minc(0, temp);
		for(auto rd: critd){
			if(temp - rd < 0)
				continue;
			int lo = upper_bound(crit.begin(), crit.end(), rd+1) - crit.begin() - 1;
			int hi = upper_bound(crit.begin(), crit.end(), rd+r) - crit.begin() - 1;
			tuple<ll, ll, ll> ret = maxquery(1, 0, (int)crit.size() -1, lo, hi);
			//printf("rd=%lld ru=%lld ret=%lld\n", rd, temp-rd, temp+max(get<0>(ret)+get<1>(ret), get<2>(ret)));
			ans = min(ans, temp + max(get<0>(ret)+get<1>(ret), get<2>(ret)));
		}
		for(auto ru: critu){
			ll rd = temp - ru;
			if(rd < 0)
				continue;
			int lo = upper_bound(crit.begin(), crit.end(), rd+1) - crit.begin() - 1;
			int hi = upper_bound(crit.begin(), crit.end(), rd+r) - crit.begin() - 1;
			tuple<ll, ll, ll> ret = maxquery(1, 0, (int)crit.size() -1, lo, hi);
			//printf("rd=%lld ru=%lld ret=%lld\n", rd, ru, rd+ru+max(get<0>(ret)+get<1>(ret), get<2>(ret)));
			ans = min(ans, temp + max(get<0>(ret)+get<1>(ret), get<2>(ret)));
		}
	}
	printf("%lld\n", ans);
	return 0;
}

Compilation message

cultivation.cpp: In function 'void minc(ll, ll)':
cultivation.cpp:44:27: warning: unused variable 'j' [-Wunused-variable]
   44 |  int sz = crit.size(), i, j;
      |                           ^
cultivation.cpp:53:5: warning: unused variable 'cd' [-Wunused-variable]
   53 |  ll cd = 0, cu = 0, sum = 0;
      |     ^~
cultivation.cpp:53:13: warning: unused variable 'cu' [-Wunused-variable]
   53 |  ll cd = 0, cu = 0, sum = 0;
      |             ^~
cultivation.cpp:53:21: warning: unused variable 'sum' [-Wunused-variable]
   53 |  ll cd = 0, cu = 0, sum = 0;
      |                     ^~~
cultivation.cpp: In function 'int main()':
cultivation.cpp:111:11: warning: unused variable 'rd' [-Wunused-variable]
  111 |  ll y, x, rd, ru;
      |           ^~
cultivation.cpp:111:15: warning: unused variable 'ru' [-Wunused-variable]
  111 |  ll y, x, rd, ru;
      |               ^~
cultivation.cpp:112:12: warning: unused variable 'j' [-Wunused-variable]
  112 |  int n, i, j;
      |            ^
cultivation.cpp:113:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  113 |  scanf("%lld %lld %d", &r, &c, &n);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
cultivation.cpp:115:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  115 |   scanf("%lld %lld", &y, &x);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 4 ms 348 KB Output is correct
18 Correct 237 ms 348 KB Output is correct
19 Correct 23 ms 348 KB Output is correct
20 Correct 6 ms 348 KB Output is correct
21 Correct 165 ms 348 KB Output is correct
22 Execution timed out 2017 ms 604 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 4 ms 348 KB Output is correct
18 Correct 237 ms 348 KB Output is correct
19 Correct 23 ms 348 KB Output is correct
20 Correct 6 ms 348 KB Output is correct
21 Correct 165 ms 348 KB Output is correct
22 Execution timed out 2017 ms 604 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 348 KB Output is correct
2 Correct 14 ms 348 KB Output is correct
3 Correct 15 ms 348 KB Output is correct
4 Correct 12 ms 348 KB Output is correct
5 Correct 21 ms 480 KB Output is correct
6 Correct 15 ms 348 KB Output is correct
7 Correct 8 ms 348 KB Output is correct
8 Correct 14 ms 480 KB Output is correct
9 Correct 9 ms 488 KB Output is correct
10 Correct 13 ms 484 KB Output is correct
11 Correct 14 ms 344 KB Output is correct
12 Correct 13 ms 480 KB Output is correct
13 Correct 8 ms 476 KB Output is correct
14 Correct 9 ms 348 KB Output is correct
15 Correct 11 ms 472 KB Output is correct
16 Correct 15 ms 348 KB Output is correct
17 Correct 16 ms 476 KB Output is correct
18 Correct 13 ms 476 KB Output is correct
19 Correct 14 ms 344 KB Output is correct
20 Correct 12 ms 476 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 348 KB Output is correct
2 Correct 14 ms 348 KB Output is correct
3 Correct 15 ms 348 KB Output is correct
4 Correct 12 ms 348 KB Output is correct
5 Correct 21 ms 480 KB Output is correct
6 Correct 15 ms 348 KB Output is correct
7 Correct 8 ms 348 KB Output is correct
8 Correct 14 ms 480 KB Output is correct
9 Correct 9 ms 488 KB Output is correct
10 Correct 13 ms 484 KB Output is correct
11 Correct 14 ms 344 KB Output is correct
12 Correct 13 ms 480 KB Output is correct
13 Correct 8 ms 476 KB Output is correct
14 Correct 9 ms 348 KB Output is correct
15 Correct 11 ms 472 KB Output is correct
16 Correct 15 ms 348 KB Output is correct
17 Correct 16 ms 476 KB Output is correct
18 Correct 13 ms 476 KB Output is correct
19 Correct 14 ms 344 KB Output is correct
20 Correct 12 ms 476 KB Output is correct
21 Correct 1206 ms 604 KB Output is correct
22 Correct 1265 ms 604 KB Output is correct
23 Correct 1042 ms 604 KB Output is correct
24 Correct 1030 ms 604 KB Output is correct
25 Correct 1325 ms 600 KB Output is correct
26 Correct 1061 ms 604 KB Output is correct
27 Correct 966 ms 604 KB Output is correct
28 Correct 1221 ms 608 KB Output is correct
29 Correct 1093 ms 604 KB Output is correct
30 Correct 1178 ms 780 KB Output is correct
31 Correct 1168 ms 604 KB Output is correct
32 Correct 1181 ms 600 KB Output is correct
33 Correct 701 ms 600 KB Output is correct
34 Correct 1126 ms 604 KB Output is correct
35 Correct 1051 ms 612 KB Output is correct
36 Correct 941 ms 604 KB Output is correct

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 4 ms 348 KB Output is correct
18 Correct 237 ms 348 KB Output is correct
19 Correct 23 ms 348 KB Output is correct
20 Correct 6 ms 348 KB Output is correct
21 Correct 165 ms 348 KB Output is correct
22 Execution timed out 2017 ms 604 KB Time limit exceeded
23 Halted 0 ms 0 KB -