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답안 #199541

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
199541 2020-02-02T02:13:59 Z arnold518 역사적 조사 (JOI14_historical) C++14
40 / 100
 4000 ms 6004 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 = 500;

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 376 KB Output is correct
13 Correct 5 ms 376 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 5 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 10 ms 376 KB Output is correct
4 Correct 17 ms 632 KB Output is correct
5 Correct 31 ms 504 KB Output is correct
6 Correct 45 ms 504 KB Output is correct
7 Correct 51 ms 504 KB Output is correct
8 Correct 34 ms 504 KB Output is correct
9 Correct 34 ms 504 KB Output is correct
10 Correct 71 ms 632 KB Output is correct
11 Correct 66 ms 632 KB Output is correct
12 Correct 72 ms 632 KB Output is correct
13 Correct 68 ms 632 KB Output is correct
14 Correct 64 ms 600 KB Output is correct
15 Correct 67 ms 632 KB Output is correct
16 Correct 38 ms 632 KB Output is correct
17 Correct 15 ms 632 KB Output is correct
18 Correct 64 ms 632 KB Output is correct
19 Correct 75 ms 632 KB Output is correct
20 Correct 73 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 380 KB Output is correct
6 Correct 6 ms 376 KB Output is correct
7 Correct 9 ms 504 KB Output is correct
8 Correct 12 ms 632 KB Output is correct
9 Correct 21 ms 888 KB Output is correct
10 Correct 15 ms 1140 KB Output is correct
11 Correct 75 ms 3948 KB Output is correct
12 Correct 48 ms 1648 KB Output is correct
13 Correct 77 ms 2544 KB Output is correct
14 Correct 102 ms 4208 KB Output is correct
15 Correct 129 ms 5616 KB Output is correct
16 Correct 101 ms 5232 KB Output is correct
17 Correct 45 ms 2416 KB Output is correct
18 Correct 72 ms 3828 KB Output is correct
19 Correct 80 ms 6004 KB Output is correct
20 Correct 50 ms 4208 KB Output is correct

Subtask #4
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 82 ms 888 KB Output is correct
2 Correct 291 ms 1248 KB Output is correct
3 Correct 653 ms 1784 KB Output is correct
4 Correct 1081 ms 2420 KB Output is correct
5 Correct 1516 ms 2780 KB Output is correct
6 Correct 1754 ms 3188 KB Output is correct
7 Correct 1467 ms 3576 KB Output is correct
8 Correct 1024 ms 4080 KB Output is correct
9 Correct 658 ms 4596 KB Output is correct
10 Correct 229 ms 4720 KB Output is correct
11 Correct 919 ms 4720 KB Output is correct
12 Correct 2371 ms 4676 KB Output is correct
13 Correct 3721 ms 4796 KB Output is correct
14 Execution timed out 4077 ms 4080 KB Time limit exceeded
15 Halted 0 ms 0 KB -