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답안 #978115

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
978115 2024-05-08T21:09:02 Z Isam Global Warming (CEOI18_glo) C++17
38 / 100
 2000 ms 7772 KB 
#include<bits/stdc++.h>
using namespace std;

#define eb emplace_back
#define intt long long
#define all(x) begin(x),end(x)


constexpr int sz = 2e5 + 5;
constexpr intt inf = 1E18 + 7;

int n, x, t[sz];

struct Node{
	intt sm;
	
} st[sz << 2], lazy[sz << 2];

Node operator+(Node i, Node j){
	return Node{i.sm + j.sm};
}

inline void build(int in, int l, int r){
	if(l == r){
		st[in].sm = t[l];
		return;
	}
	int mid = l + ((r - l) >> 1);
	build(in << 1, l, mid);
	build(in << 1 | 1, mid + 1, r);
	st[in] = st[in << 1] + st[in << 1 | 1];
	return;
}

Node zro;

inline void relax(int in, int l, int r){
	if(l ^ r){
		lazy[in << 1].sm += lazy[in].sm;
		lazy[in << 1 | 1].sm += lazy[in].sm;
	}
	st[in].sm += lazy[in].sm * (r - l + 1);
	lazy[in] = zro;
	return;
}

inline void update(int in, int l, int r, int L, int R, int val){
	if(lazy[in].sm != zro.sm) relax(in, l, r);
	if(l > R || r < L || l > r) return;
	if(l >= L && r <= R){
		lazy[in].sm += val;
		relax(in, l, r);
		return;
	}
	int mid = l + ((r - l) >> 1);
	update(in << 1, l, mid, L, R, val);
	update(in << 1 | 1, mid + 1, r, L, R, val);
	st[in] = st[in << 1] + st[in << 1 | 1];
	return;
}

Node get_ans(int l, int  r, int in, int L, int R){
	if(lazy[in].sm != zro.sm) relax(in, l, r);
	if(l > R || r < L || r < l) return zro;	
	if(l >= L && r <= R) return st[in];
	int mid = l + ((r - l) >> 1);
	return get_ans(l, mid, in << 1, L, R) + get_ans(mid + 1, r, in << 1 | 1, L, R);
}

signed main(){
	ios_base::sync_with_stdio(0), cin.tie(0);
	
	cin >> n >> x;
	
	for(register int i = 1; i <= n; ++i){
		cin >> t[i];
	}
	
	if(x == 0){
		vector<intt> dp(n+1, inf);
		
		dp[0] = -inf;
		
		for(register int i = 1; i <= n; ++i){
			
			int l = upper_bound(all(dp), t[i]) - dp.begin();
			
			if(dp[l] > t[i] && dp[l-1] < t[i]){
				dp[l] = t[i];
			}
			
			
		}
		
		int res(1);
		
		for(register int i = 1; i <= n; ++i) if(dp[i] ^ inf) res = i;
		
		return cout << res << '\n', 0;
	}
	
	build(1, 1, n);
	
	int ans(1);
	
	for(register int l = 1; l <= n; ++l){
		
		update(1, 1, n, l, n, x);
		
		vector<intt> dp(n+1, inf);
		
		dp[0] = -inf;
		
		for(register int i = 1; i <= n; ++i){
			t[i] = get_ans(1, n, 1, i, i).sm;
		}
		
		for(register int i = 1; i <= n; ++i){
			
			int l = upper_bound(all(dp), t[i]) - dp.begin();
			
			if(dp[l] > t[i] && dp[l-1] < t[i]){
				dp[l] = t[i];
			}
			
			
		}
		
		int res(1);
		
		for(register int i = 1; i <= n; ++i) if(dp[i] ^ inf) res = i;
		
		ans = max(ans, res);
		
		
		update(1, 1, n, l, n, -x);
	}
	
	
	cout << ans << '\n';
		
}

Compilation message

glo.cpp: In function 'int main()':
glo.cpp:75:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   75 |  for(register int i = 1; i <= n; ++i){
      |                   ^
glo.cpp:84:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   84 |   for(register int i = 1; i <= n; ++i){
      |                    ^
glo.cpp:97:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   97 |   for(register int i = 1; i <= n; ++i) if(dp[i] ^ inf) res = i;
      |                    ^
glo.cpp:106:19: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  106 |  for(register int l = 1; l <= n; ++l){
      |                   ^
glo.cpp:114:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  114 |   for(register int i = 1; i <= n; ++i){
      |                    ^
glo.cpp:118:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  118 |   for(register int i = 1; i <= n; ++i){
      |                    ^
glo.cpp:131:20: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
  131 |   for(register int i = 1; i <= n; ++i) if(dp[i] ^ inf) res = i;
      |                    ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 115 ms 2392 KB Output is correct
20 Correct 117 ms 2536 KB Output is correct
21 Correct 115 ms 2396 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 113 ms 2396 KB Output is correct
24 Correct 114 ms 2392 KB Output is correct
25 Correct 103 ms 2528 KB Output is correct
26 Correct 122 ms 2528 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 2648 KB Output is correct
2 Correct 27 ms 2652 KB Output is correct
3 Correct 31 ms 2648 KB Output is correct
4 Correct 26 ms 2800 KB Output is correct
5 Correct 20 ms 2648 KB Output is correct

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 2055 ms 7380 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 2041 ms 7772 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 115 ms 2392 KB Output is correct
20 Correct 117 ms 2536 KB Output is correct
21 Correct 115 ms 2396 KB Output is correct
22 Correct 0 ms 344 KB Output is correct
23 Correct 113 ms 2396 KB Output is correct
24 Correct 114 ms 2392 KB Output is correct
25 Correct 103 ms 2528 KB Output is correct
26 Correct 122 ms 2528 KB Output is correct
27 Correct 26 ms 2648 KB Output is correct
28 Correct 27 ms 2652 KB Output is correct
29 Correct 31 ms 2648 KB Output is correct
30 Correct 26 ms 2800 KB Output is correct
31 Correct 20 ms 2648 KB Output is correct
32 Execution timed out 2055 ms 7380 KB Time limit exceeded
33 Halted 0 ms 0 KB -