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답안 #199538

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
199538 2020-02-02T02:03:59 Z arnold518 역사적 조사 (JOI14_historical) C++14
40 / 100
 4000 ms 6000 KB 
#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 = 700;

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)
{
	if(tl==tr) { tree[node]+=val; return; }
	int mid=tl+tr>>1;
	if(pos<=mid) update(node*2, tl, mid, pos, val);
	else update(node*2+1, mid+1, tr, pos, val);
	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:30:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid=tl+tr>>1;
          ~~^~~
historic.cpp: In function 'int main()':
historic.cpp:42:9: warning: unused variable 'j' [-Wunused-variable]
  int i, j;
         ^
historic.cpp:44:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &N, &Q);
  ~~~~~^~~~~~~~~~~~~~~~
historic.cpp:45:40: 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:49:61: 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 380 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 6 ms 504 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 300 KB Output is correct
2 Correct 7 ms 376 KB Output is correct
3 Correct 15 ms 376 KB Output is correct
4 Correct 30 ms 504 KB Output is correct
5 Correct 58 ms 504 KB Output is correct
6 Correct 79 ms 584 KB Output is correct
7 Correct 87 ms 504 KB Output is correct
8 Correct 55 ms 632 KB Output is correct
9 Correct 58 ms 632 KB Output is correct
10 Correct 116 ms 760 KB Output is correct
11 Correct 113 ms 632 KB Output is correct
12 Correct 112 ms 636 KB Output is correct
13 Correct 111 ms 632 KB Output is correct
14 Correct 104 ms 632 KB Output is correct
15 Correct 107 ms 632 KB Output is correct
16 Correct 63 ms 632 KB Output is correct
17 Correct 26 ms 632 KB Output is correct
18 Correct 107 ms 632 KB Output is correct
19 Correct 122 ms 612 KB Output is correct
20 Correct 120 ms 760 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 504 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 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 14 ms 1012 KB Output is correct
11 Correct 77 ms 3952 KB Output is correct
12 Correct 51 ms 1648 KB Output is correct
13 Correct 76 ms 2416 KB Output is correct
14 Correct 109 ms 4208 KB Output is correct
15 Correct 136 ms 5616 KB Output is correct
16 Correct 94 ms 5236 KB Output is correct
17 Correct 46 ms 2416 KB Output is correct
18 Correct 74 ms 3884 KB Output is correct
19 Correct 86 ms 6000 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 140 ms 760 KB Output is correct
2 Correct 452 ms 1304 KB Output is correct
3 Correct 956 ms 1784 KB Output is correct
4 Correct 1508 ms 2416 KB Output is correct
5 Correct 2110 ms 2744 KB Output is correct
6 Correct 2283 ms 3316 KB Output is correct
7 Correct 2045 ms 3564 KB Output is correct
8 Correct 1406 ms 4084 KB Output is correct
9 Correct 945 ms 4504 KB Output is correct
10 Correct 341 ms 4692 KB Output is correct
11 Correct 1255 ms 4720 KB Output is correct
12 Correct 3087 ms 4724 KB Output is correct
13 Execution timed out 4070 ms 3700 KB Time limit exceeded
14 Halted 0 ms 0 KB -