oj.uz

답안 #329921

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
329921 2020-11-23T06:45:48 Z M_W Mountains (NOI20_mountains) C++14
100 / 100
 1016 ms 32864 KB 
#include <bits/stdc++.h>
using namespace std;
map<long long, int> mp;
long long a[300300], b[300300];
int fwt[300300];

void add(int v){
	for(;v <= 300300; v += (v & -v))
		fwt[v]++;
}

int query(int v){
	int ret = 0;
	for(;v > 0; v -= (v & -v)){
		ret += fwt[v];
	}	
	return ret;
}

int main(){
	int N;
	scanf("%d", &N);
	for(int i = 0; i < N; i++){
		scanf("%lld", &a[i]);
		b[i] = a[i];
	}	
	
	sort(a, a + N);
	int k = 1;
	for(int i = 0; i < N; i++){
		if(mp[a[i]] == 0) mp[a[i]] = k++;
	}
	vector<int> l;
	for(int i = 0; i < N; i++){
		l.push_back(query(mp[b[i]] - 1));
		add(mp[b[i]]);
	}
	memset(fwt, 0, sizeof fwt);
	long long ans = 0;
	for(int i = N - 1; i >= 0; i--){
		ans += (query(mp[b[i]] - 1) * 1ll * l[i] * 1ll) * 1ll;
		add(mp[b[i]]);
	}
	printf("%lld", ans);
}

Compilation message

Mountains.cpp: In function 'int main()':
Mountains.cpp:22:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |  scanf("%d", &N);
      |  ~~~~~^~~~~~~~~~
Mountains.cpp:24:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |   scanf("%lld", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1516 KB Output is correct
2 Correct 352 ms 27104 KB Output is correct
3 Correct 345 ms 26976 KB Output is correct
4 Correct 353 ms 26976 KB Output is correct
5 Correct 345 ms 26976 KB Output is correct
6 Correct 347 ms 26976 KB Output is correct
7 Correct 347 ms 26976 KB Output is correct
8 Correct 348 ms 26976 KB Output is correct
9 Correct 284 ms 17508 KB Output is correct
10 Correct 286 ms 17528 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 70 ms 7516 KB Output is correct
2 Correct 70 ms 8028 KB Output is correct
3 Correct 69 ms 8028 KB Output is correct
4 Correct 69 ms 8028 KB Output is correct
5 Correct 70 ms 8156 KB Output is correct
6 Correct 70 ms 8072 KB Output is correct
7 Correct 68 ms 8156 KB Output is correct
8 Correct 68 ms 8024 KB Output is correct
9 Correct 64 ms 8028 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 70 ms 7516 KB Output is correct
2 Correct 70 ms 8028 KB Output is correct
3 Correct 69 ms 8028 KB Output is correct
4 Correct 69 ms 8028 KB Output is correct
5 Correct 70 ms 8156 KB Output is correct
6 Correct 70 ms 8072 KB Output is correct
7 Correct 68 ms 8156 KB Output is correct
8 Correct 68 ms 8024 KB Output is correct
9 Correct 64 ms 8028 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct
11 Correct 113 ms 8412 KB Output is correct
12 Correct 104 ms 8412 KB Output is correct
13 Correct 104 ms 8412 KB Output is correct
14 Correct 103 ms 8452 KB Output is correct
15 Correct 105 ms 8412 KB Output is correct
16 Correct 113 ms 8412 KB Output is correct
17 Correct 103 ms 8348 KB Output is correct
18 Correct 71 ms 8308 KB Output is correct
19 Correct 82 ms 8412 KB Output is correct
20 Correct 1 ms 1516 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1548 KB Output is correct
2 Correct 2 ms 1516 KB Output is correct
3 Correct 1 ms 1516 KB Output is correct
4 Correct 2 ms 1516 KB Output is correct
5 Correct 2 ms 1516 KB Output is correct
6 Correct 2 ms 1516 KB Output is correct
7 Correct 2 ms 1516 KB Output is correct
8 Correct 1 ms 1516 KB Output is correct
9 Correct 2 ms 1516 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1548 KB Output is correct
2 Correct 2 ms 1516 KB Output is correct
3 Correct 1 ms 1516 KB Output is correct
4 Correct 2 ms 1516 KB Output is correct
5 Correct 2 ms 1516 KB Output is correct
6 Correct 2 ms 1516 KB Output is correct
7 Correct 2 ms 1516 KB Output is correct
8 Correct 1 ms 1516 KB Output is correct
9 Correct 2 ms 1516 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct
11 Correct 13 ms 2412 KB Output is correct
12 Correct 15 ms 2432 KB Output is correct
13 Correct 13 ms 2412 KB Output is correct
14 Correct 13 ms 2412 KB Output is correct
15 Correct 13 ms 2412 KB Output is correct
16 Correct 14 ms 2412 KB Output is correct
17 Correct 13 ms 2412 KB Output is correct
18 Correct 11 ms 2028 KB Output is correct
19 Correct 6 ms 1772 KB Output is correct
20 Correct 1 ms 1516 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 70 ms 7516 KB Output is correct
2 Correct 70 ms 8028 KB Output is correct
3 Correct 69 ms 8028 KB Output is correct
4 Correct 69 ms 8028 KB Output is correct
5 Correct 70 ms 8156 KB Output is correct
6 Correct 70 ms 8072 KB Output is correct
7 Correct 68 ms 8156 KB Output is correct
8 Correct 68 ms 8024 KB Output is correct
9 Correct 64 ms 8028 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct
11 Correct 113 ms 8412 KB Output is correct
12 Correct 104 ms 8412 KB Output is correct
13 Correct 104 ms 8412 KB Output is correct
14 Correct 103 ms 8452 KB Output is correct
15 Correct 105 ms 8412 KB Output is correct
16 Correct 113 ms 8412 KB Output is correct
17 Correct 103 ms 8348 KB Output is correct
18 Correct 71 ms 8308 KB Output is correct
19 Correct 82 ms 8412 KB Output is correct
20 Correct 1 ms 1516 KB Output is correct
21 Correct 578 ms 15336 KB Output is correct
22 Correct 623 ms 15208 KB Output is correct
23 Correct 573 ms 15328 KB Output is correct
24 Correct 592 ms 15352 KB Output is correct
25 Correct 588 ms 15380 KB Output is correct
26 Correct 592 ms 15336 KB Output is correct
27 Correct 569 ms 15456 KB Output is correct
28 Correct 222 ms 15168 KB Output is correct
29 Correct 218 ms 15208 KB Output is correct
30 Correct 1 ms 1516 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1516 KB Output is correct
2 Correct 352 ms 27104 KB Output is correct
3 Correct 345 ms 26976 KB Output is correct
4 Correct 353 ms 26976 KB Output is correct
5 Correct 345 ms 26976 KB Output is correct
6 Correct 347 ms 26976 KB Output is correct
7 Correct 347 ms 26976 KB Output is correct
8 Correct 348 ms 26976 KB Output is correct
9 Correct 284 ms 17508 KB Output is correct
10 Correct 286 ms 17528 KB Output is correct
11 Correct 70 ms 7516 KB Output is correct
12 Correct 70 ms 8028 KB Output is correct
13 Correct 69 ms 8028 KB Output is correct
14 Correct 69 ms 8028 KB Output is correct
15 Correct 70 ms 8156 KB Output is correct
16 Correct 70 ms 8072 KB Output is correct
17 Correct 68 ms 8156 KB Output is correct
18 Correct 68 ms 8024 KB Output is correct
19 Correct 64 ms 8028 KB Output is correct
20 Correct 1 ms 1516 KB Output is correct
21 Correct 113 ms 8412 KB Output is correct
22 Correct 104 ms 8412 KB Output is correct
23 Correct 104 ms 8412 KB Output is correct
24 Correct 103 ms 8452 KB Output is correct
25 Correct 105 ms 8412 KB Output is correct
26 Correct 113 ms 8412 KB Output is correct
27 Correct 103 ms 8348 KB Output is correct
28 Correct 71 ms 8308 KB Output is correct
29 Correct 82 ms 8412 KB Output is correct
30 Correct 1 ms 1516 KB Output is correct
31 Correct 2 ms 1548 KB Output is correct
32 Correct 2 ms 1516 KB Output is correct
33 Correct 1 ms 1516 KB Output is correct
34 Correct 2 ms 1516 KB Output is correct
35 Correct 2 ms 1516 KB Output is correct
36 Correct 2 ms 1516 KB Output is correct
37 Correct 2 ms 1516 KB Output is correct
38 Correct 1 ms 1516 KB Output is correct
39 Correct 2 ms 1516 KB Output is correct
40 Correct 1 ms 1516 KB Output is correct
41 Correct 13 ms 2412 KB Output is correct
42 Correct 15 ms 2432 KB Output is correct
43 Correct 13 ms 2412 KB Output is correct
44 Correct 13 ms 2412 KB Output is correct
45 Correct 13 ms 2412 KB Output is correct
46 Correct 14 ms 2412 KB Output is correct
47 Correct 13 ms 2412 KB Output is correct
48 Correct 11 ms 2028 KB Output is correct
49 Correct 6 ms 1772 KB Output is correct
50 Correct 1 ms 1516 KB Output is correct
51 Correct 578 ms 15336 KB Output is correct
52 Correct 623 ms 15208 KB Output is correct
53 Correct 573 ms 15328 KB Output is correct
54 Correct 592 ms 15352 KB Output is correct
55 Correct 588 ms 15380 KB Output is correct
56 Correct 592 ms 15336 KB Output is correct
57 Correct 569 ms 15456 KB Output is correct
58 Correct 222 ms 15168 KB Output is correct
59 Correct 218 ms 15208 KB Output is correct
60 Correct 1 ms 1516 KB Output is correct
61 Correct 993 ms 32864 KB Output is correct
62 Correct 975 ms 32736 KB Output is correct
63 Correct 1016 ms 32864 KB Output is correct
64 Correct 1010 ms 32736 KB Output is correct
65 Correct 1006 ms 32736 KB Output is correct
66 Correct 997 ms 32736 KB Output is correct
67 Correct 999 ms 32736 KB Output is correct
68 Correct 788 ms 23280 KB Output is correct
69 Correct 704 ms 17764 KB Output is correct
70 Correct 1 ms 1516 KB Output is correct