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답안 #199544

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
199544 2020-02-02T02:17:16 Z arnold518 역사적 조사 (JOI14_historical) C++14
40 / 100
 4000 ms 6040 KB 
#pragma GCC optimize ("O3")
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")

#include <bits/stdc++.h>
using namespace std;

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

const int MAXN = 1e5;
const int SQ = 330;

int N, Q, A[MAXN+10], B[MAXN+10], S;
vector<int> comp;

struct Query
{
	int l, r, p;
	bool operator < (const Query &p)
	{
		if(l/SQ==p.l/SQ) return r<p.r;
		return l/SQ<p.l/SQ;
	}
};

Query query[MAXN+10];

ll tree[MAXN*4+10], ans[MAXN+10];
void update(int node, int tl, int tr, int pos, ll val)
{
	while(tl!=tr)
	{
		int mid=tl+tr>>1;
		if(pos<=mid) node=node*2, tr=mid;
		else node=node*2+1, tl=mid+1;
	}
	tree[node]+=val;
	while(node!=1)
	{
		node/=2;
		tree[node]=max(tree[node*2], tree[node*2+1]);
	}
}
ll qquery() { return tree[1]; }

void push(int x) { update(1, 1, S, B[x], A[x]); }
void pop(int x) { update(1, 1, S, B[x], -A[x]); }

int main()
{
	int i, j;

	scanf("%d%d", &N, &Q);
	for(i=1; i<=N; i++) scanf("%d", &A[i]), comp.push_back(A[i]);
	sort(comp.begin(), comp.end());
	comp.erase(unique(comp.begin(), comp.end()), comp.end()); S=comp.size();
	for(i=1; i<=N; i++) B[i]=lower_bound(comp.begin(), comp.end(), A[i])-comp.begin()+1;
	for(i=1; i<=Q; i++) scanf("%d%d", &query[i].l, &query[i].r), query[i].p=i;
	sort(query+1, query+Q+1);

	int l=1, r=1; push(1);
	for(i=1; i<=Q; i++)
	{
		while(r<query[i].r) r++, push(r);
		while(l>query[i].l) l--, push(l);
		while(r>query[i].r) pop(r), r--;
		while(l<query[i].l) pop(l), l++;
		ans[query[i].p]=qquery();
	}
	for(i=1; i<=Q; i++) printf("%lld\n", ans[i]);
}

Compilation message

historic.cpp: In function 'void update(int, int, int, int, ll)':
historic.cpp:35:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int mid=tl+tr>>1;
           ~~^~~
historic.cpp: In function 'int main()':
historic.cpp:53:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j;
         ^
historic.cpp:55:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &Q);
  ~~~~~^~~~~~~~~~~~~~~~
historic.cpp:56:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(i=1; i<=N; i++) scanf("%d", &A[i]), comp.push_back(A[i]);
                      ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
historic.cpp:60:61: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(i=1; i<=Q; i++) scanf("%d%d", &query[i].l, &query[i].r), query[i].p=i;
                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 380 KB Output is correct
13 Correct 5 ms 380 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 376 KB Output is correct
2 Correct 7 ms 376 KB Output is correct
3 Correct 9 ms 376 KB Output is correct
4 Correct 14 ms 504 KB Output is correct
5 Correct 25 ms 504 KB Output is correct
6 Correct 34 ms 504 KB Output is correct
7 Correct 39 ms 504 KB Output is correct
8 Correct 26 ms 632 KB Output is correct
9 Correct 27 ms 504 KB Output is correct
10 Correct 50 ms 632 KB Output is correct
11 Correct 51 ms 620 KB Output is correct
12 Correct 52 ms 632 KB Output is correct
13 Correct 50 ms 760 KB Output is correct
14 Correct 45 ms 632 KB Output is correct
15 Correct 49 ms 632 KB Output is correct
16 Correct 29 ms 632 KB Output is correct
17 Correct 14 ms 632 KB Output is correct
18 Correct 49 ms 632 KB Output is correct
19 Correct 51 ms 632 KB Output is correct
20 Correct 54 ms 632 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 6 ms 376 KB Output is correct
6 Correct 6 ms 376 KB Output is correct
7 Correct 8 ms 504 KB Output is correct
8 Correct 12 ms 632 KB Output is correct
9 Correct 21 ms 936 KB Output is correct
10 Correct 15 ms 1140 KB Output is correct
11 Correct 78 ms 3824 KB Output is correct
12 Correct 50 ms 1648 KB Output is correct
13 Correct 75 ms 2416 KB Output is correct
14 Correct 106 ms 4208 KB Output is correct
15 Correct 137 ms 5616 KB Output is correct
16 Correct 94 ms 5232 KB Output is correct
17 Correct 45 ms 2416 KB Output is correct
18 Correct 70 ms 3784 KB Output is correct
19 Correct 82 ms 6040 KB Output is correct
20 Correct 51 ms 4208 KB Output is correct

Subtask #4
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 64 ms 760 KB Output is correct
2 Correct 259 ms 1272 KB Output is correct
3 Correct 580 ms 1732 KB Output is correct
4 Correct 1030 ms 2340 KB Output is correct
5 Correct 1488 ms 2804 KB Output is correct
6 Correct 1777 ms 3192 KB Output is correct
7 Correct 1585 ms 3568 KB Output is correct
8 Correct 1124 ms 4084 KB Output is correct
9 Correct 763 ms 4592 KB Output is correct
10 Correct 249 ms 4720 KB Output is correct
11 Correct 1054 ms 4736 KB Output is correct
12 Correct 2722 ms 4720 KB Output is correct
13 Execution timed out 4080 ms 3696 KB Time limit exceeded
14 Halted 0 ms 0 KB -