Submission #115640

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
115640	2019-06-08T12:11:58 Z	김세빈(#2868)	Hotel (CEOI11_hot)	C++14	50 / 100	1951 ms	161532 KB

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair <ll, ll> pll;

struct lazyseg{
	pll T[1101010];
	ll L[1101010];
	
	void init(ll p, ll s, ll e, pll *D)
	{
		if(s == e){
			T[p] = pll(D[s].second, s);
		}
		else{
			init(p << 1, s, s + e >> 1, D);
			init(p << 1 | 1, (s + e >> 1) + 1, e, D);
			T[p] = max(T[p << 1], T[p << 1 | 1]);
		}
	}
	
	void spread(ll p, ll s, ll e)
	{
		T[p << 1].first += L[p]; L[p << 1] += L[p];
		T[p << 1 | 1].first += L[p]; L[p << 1 | 1] += L[p];
		
		L[p] = 0;
	}
	
	void add(ll p, ll s, ll e, ll l, ll r, ll v)
	{
		if(r < s || e < l) return;
		else if(l <= s && e <= r){
			T[p].first += v; L[p] += v;
			return;
		}
		
		spread(p, s, e);
		
		add(p << 1, s, s + e >> 1, l, r, v);
		add(p << 1 | 1, (s + e >> 1) + 1, e, l, r, v);
		
		T[p] = max(T[p << 1], T[p << 1 | 1]);
	}
	
	pll get_max() { return T[1]; }
};

lazyseg T;
pll H[505050], R[505050], K[505050];
set <pll> S;
ll n, m, k, ans;

int main()
{
	ll i, j, v, s;
	
	scanf("%lld%lld%lld", &n, &m, &k);
	
	for(i=0; i<n; i++){
		scanf("%lld%lld", &H[i].second, &H[i].first);
	}
	
	sort(H, H + n);
	
	H[n] = pll(2e9, 2e9);
	
	for(i=0; i<m; i++){
		scanf("%lld%lld", &R[i].second, &R[i].first);
	}
	
	sort(R, R + m);
	
	for(i=0, j=0; i<=n; i++){
		K[i].first = j;
		for(; j<m && R[j].first <= H[i].first; j++);
		K[i].second = j - 1;
		
		S.insert(pll(H[i].first, i));
	}
	
	for(i=0; i<m; i++){
		auto it1 = S.lower_bound(pll(R[i].first, 0)); j = it1 -> second;
		if(K[j].first == K[j].second + 1) for(; ; );
	}
	
	T.init(1, 0, m - 1, R);
	
	for(i=0; i<=n; i++){
		T.add(1, 0, m - 1, K[i].first, K[i].second, -H[i].second);
	}
	
	for(s=0; k--; ){
		tie(v, i) = T.get_max(); s += v;	
			
		T.add(1, 0, m - 1, i, i, -1e18);
		auto it1 = S.lower_bound(pll(R[i].first, 0)); i = it1 -> second;
		auto it2 = next(it1); j = it2 -> second;
		
		T.add(1, 0, m - 1, K[i].first, K[i].second, H[i].second - H[j].second);
		K[j].first = K[i].first; S.erase(it1);
		
		ans = max(ans, s);
	}
	
	printf("%lld\n", ans);
	
	return 0;
}

Compilation message

hot.cpp: In member function 'void lazyseg::init(ll, ll, ll, pll*)':
hot.cpp:18:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    init(p << 1, s, s + e >> 1, D);
                    ~~^~~
hot.cpp:19:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    init(p << 1 | 1, (s + e >> 1) + 1, e, D);
                      ~~^~~
hot.cpp: In member function 'void lazyseg::add(ll, ll, ll, ll, ll, ll)':
hot.cpp:42:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   add(p << 1, s, s + e >> 1, l, r, v);
                  ~~^~~
hot.cpp:43:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   add(p << 1 | 1, (s + e >> 1) + 1, e, l, r, v);
                    ~~^~~
hot.cpp: In function 'int main()':
hot.cpp:60:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld", &n, &m, &k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
hot.cpp:63:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld", &H[i].second, &H[i].first);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hot.cpp:71:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld", &R[i].second, &R[i].first);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	16 ms	17664 KB	Output is correct

Subtask #2
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	40 ms	35076 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #3
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	44 ms	35156 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #4
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	16 ms	17536 KB	Output is correct
2	Correct	16 ms	17536 KB	Output is correct

Subtask #5
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	28 ms	18876 KB	Output is correct

Subtask #6
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	85 ms	23128 KB	Output is correct

Subtask #7
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	262 ms	54864 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	844 ms	87396 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #9
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	766 ms	68600 KB	Output is correct
2	Correct	953 ms	69944 KB	Output is correct

Subtask #10
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	684 ms	75512 KB	Output is correct
2	Runtime error	1951 ms	161532 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
3	Halted	0 ms	0 KB	-