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답안 #329178

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
329178 2020-11-19T15:31:35 Z oak Mountains (NOI20_mountains) C++14
100 / 100
 561 ms 28780 KB 
#include<bits/stdc++.h>
#define si 300000
using namespace std;
int fw[si+1];
long long arr[si+1],db[si+1],sum[si+1];
void upd(int po,int val){
	for(;po<=si;po+=(po&-po)){
		fw[po]+=val;
	}
}
int qry(int po){
	int ret = 0;
	for(;po>=1;po-=(po&-po)){
		ret += fw[po];
	}
	return ret;
}
int main(){
	int n,j,i;
	scanf("%d",&n);
	
	map<long long,int> mp;
	int rl[n];
	for(i=0;i<n;i++){
		scanf("%lld",&arr[i]);
		db[i] = arr[i];
	}
	sort(db,db+n);
	int co = 1;
	for(i=0;i<n;i++){
		if(mp.find(db[i]) != mp.end())continue;
		mp[db[i]] = co;
		co++;
	}
	for(i=0;i<n;i++){
		rl[i] = mp[arr[i]];
	}
	for(i=0;i<n;i++){
		sum[i] = qry(rl[i]-1);
		upd(rl[i],1);
	}
	long long ans = 0;
	memset(fw,0,sizeof fw);
	for(i=n-1;i>=0;i--){
		sum[i] *= qry(rl[i]-1);
		upd(rl[i],1);
		ans += sum[i]*1ll;
	}
	printf("%lld",ans);
}

Compilation message

Mountains.cpp: In function 'int main()':
Mountains.cpp:19:8: warning: unused variable 'j' [-Wunused-variable]
   19 |  int n,j,i;
      |        ^
Mountains.cpp:20:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
Mountains.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |   scanf("%lld",&arr[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1516 KB Output is correct
2 Correct 249 ms 28524 KB Output is correct
3 Correct 243 ms 28524 KB Output is correct
4 Correct 242 ms 28524 KB Output is correct
5 Correct 244 ms 28524 KB Output is correct
6 Correct 243 ms 28524 KB Output is correct
7 Correct 242 ms 28652 KB Output is correct
8 Correct 242 ms 28524 KB Output is correct
9 Correct 220 ms 19436 KB Output is correct
10 Correct 203 ms 19436 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 72 ms 9708 KB Output is correct
2 Correct 71 ms 9708 KB Output is correct
3 Correct 73 ms 9720 KB Output is correct
4 Correct 72 ms 9708 KB Output is correct
5 Correct 72 ms 9856 KB Output is correct
6 Correct 84 ms 9708 KB Output is correct
7 Correct 72 ms 9708 KB Output is correct
8 Correct 68 ms 9756 KB Output is correct
9 Correct 68 ms 9836 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 72 ms 9708 KB Output is correct
2 Correct 71 ms 9708 KB Output is correct
3 Correct 73 ms 9720 KB Output is correct
4 Correct 72 ms 9708 KB Output is correct
5 Correct 72 ms 9856 KB Output is correct
6 Correct 84 ms 9708 KB Output is correct
7 Correct 72 ms 9708 KB Output is correct
8 Correct 68 ms 9756 KB Output is correct
9 Correct 68 ms 9836 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct
11 Correct 88 ms 9692 KB Output is correct
12 Correct 88 ms 9708 KB Output is correct
13 Correct 88 ms 9708 KB Output is correct
14 Correct 86 ms 9708 KB Output is correct
15 Correct 88 ms 9708 KB Output is correct
16 Correct 88 ms 9708 KB Output is correct
17 Correct 90 ms 9688 KB Output is correct
18 Correct 66 ms 9708 KB Output is correct
19 Correct 67 ms 9708 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 1 ms 1516 KB Output is correct
2 Correct 1 ms 1516 KB Output is correct
3 Correct 1 ms 1516 KB Output is correct
4 Correct 1 ms 1516 KB Output is correct
5 Correct 1 ms 1516 KB Output is correct
6 Correct 2 ms 1644 KB Output is correct
7 Correct 1 ms 1516 KB Output is correct
8 Correct 1 ms 1516 KB Output is correct
9 Correct 1 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 1 ms 1516 KB Output is correct
2 Correct 1 ms 1516 KB Output is correct
3 Correct 1 ms 1516 KB Output is correct
4 Correct 1 ms 1516 KB Output is correct
5 Correct 1 ms 1516 KB Output is correct
6 Correct 2 ms 1644 KB Output is correct
7 Correct 1 ms 1516 KB Output is correct
8 Correct 1 ms 1516 KB Output is correct
9 Correct 1 ms 1516 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct
11 Correct 9 ms 2412 KB Output is correct
12 Correct 9 ms 2412 KB Output is correct
13 Correct 9 ms 2412 KB Output is correct
14 Correct 9 ms 2412 KB Output is correct
15 Correct 9 ms 2412 KB Output is correct
16 Correct 9 ms 2412 KB Output is correct
17 Correct 10 ms 2412 KB Output is correct
18 Correct 8 ms 2028 KB Output is correct
19 Correct 5 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 72 ms 9708 KB Output is correct
2 Correct 71 ms 9708 KB Output is correct
3 Correct 73 ms 9720 KB Output is correct
4 Correct 72 ms 9708 KB Output is correct
5 Correct 72 ms 9856 KB Output is correct
6 Correct 84 ms 9708 KB Output is correct
7 Correct 72 ms 9708 KB Output is correct
8 Correct 68 ms 9756 KB Output is correct
9 Correct 68 ms 9836 KB Output is correct
10 Correct 1 ms 1516 KB Output is correct
11 Correct 88 ms 9692 KB Output is correct
12 Correct 88 ms 9708 KB Output is correct
13 Correct 88 ms 9708 KB Output is correct
14 Correct 86 ms 9708 KB Output is correct
15 Correct 88 ms 9708 KB Output is correct
16 Correct 88 ms 9708 KB Output is correct
17 Correct 90 ms 9688 KB Output is correct
18 Correct 66 ms 9708 KB Output is correct
19 Correct 67 ms 9708 KB Output is correct
20 Correct 1 ms 1516 KB Output is correct
21 Correct 287 ms 15596 KB Output is correct
22 Correct 296 ms 15724 KB Output is correct
23 Correct 296 ms 15724 KB Output is correct
24 Correct 303 ms 15660 KB Output is correct
25 Correct 307 ms 15596 KB Output is correct
26 Correct 306 ms 15724 KB Output is correct
27 Correct 301 ms 15620 KB Output is correct
28 Correct 148 ms 15596 KB Output is correct
29 Correct 148 ms 15596 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 249 ms 28524 KB Output is correct
3 Correct 243 ms 28524 KB Output is correct
4 Correct 242 ms 28524 KB Output is correct
5 Correct 244 ms 28524 KB Output is correct
6 Correct 243 ms 28524 KB Output is correct
7 Correct 242 ms 28652 KB Output is correct
8 Correct 242 ms 28524 KB Output is correct
9 Correct 220 ms 19436 KB Output is correct
10 Correct 203 ms 19436 KB Output is correct
11 Correct 72 ms 9708 KB Output is correct
12 Correct 71 ms 9708 KB Output is correct
13 Correct 73 ms 9720 KB Output is correct
14 Correct 72 ms 9708 KB Output is correct
15 Correct 72 ms 9856 KB Output is correct
16 Correct 84 ms 9708 KB Output is correct
17 Correct 72 ms 9708 KB Output is correct
18 Correct 68 ms 9756 KB Output is correct
19 Correct 68 ms 9836 KB Output is correct
20 Correct 1 ms 1516 KB Output is correct
21 Correct 88 ms 9692 KB Output is correct
22 Correct 88 ms 9708 KB Output is correct
23 Correct 88 ms 9708 KB Output is correct
24 Correct 86 ms 9708 KB Output is correct
25 Correct 88 ms 9708 KB Output is correct
26 Correct 88 ms 9708 KB Output is correct
27 Correct 90 ms 9688 KB Output is correct
28 Correct 66 ms 9708 KB Output is correct
29 Correct 67 ms 9708 KB Output is correct
30 Correct 1 ms 1516 KB Output is correct
31 Correct 1 ms 1516 KB Output is correct
32 Correct 1 ms 1516 KB Output is correct
33 Correct 1 ms 1516 KB Output is correct
34 Correct 1 ms 1516 KB Output is correct
35 Correct 1 ms 1516 KB Output is correct
36 Correct 2 ms 1644 KB Output is correct
37 Correct 1 ms 1516 KB Output is correct
38 Correct 1 ms 1516 KB Output is correct
39 Correct 1 ms 1516 KB Output is correct
40 Correct 1 ms 1516 KB Output is correct
41 Correct 9 ms 2412 KB Output is correct
42 Correct 9 ms 2412 KB Output is correct
43 Correct 9 ms 2412 KB Output is correct
44 Correct 9 ms 2412 KB Output is correct
45 Correct 9 ms 2412 KB Output is correct
46 Correct 9 ms 2412 KB Output is correct
47 Correct 10 ms 2412 KB Output is correct
48 Correct 8 ms 2028 KB Output is correct
49 Correct 5 ms 1772 KB Output is correct
50 Correct 1 ms 1516 KB Output is correct
51 Correct 287 ms 15596 KB Output is correct
52 Correct 296 ms 15724 KB Output is correct
53 Correct 296 ms 15724 KB Output is correct
54 Correct 303 ms 15660 KB Output is correct
55 Correct 307 ms 15596 KB Output is correct
56 Correct 306 ms 15724 KB Output is correct
57 Correct 301 ms 15620 KB Output is correct
58 Correct 148 ms 15596 KB Output is correct
59 Correct 148 ms 15596 KB Output is correct
60 Correct 1 ms 1516 KB Output is correct
61 Correct 554 ms 28548 KB Output is correct
62 Correct 545 ms 28516 KB Output is correct
63 Correct 557 ms 28780 KB Output is correct
64 Correct 552 ms 28652 KB Output is correct
65 Correct 543 ms 28640 KB Output is correct
66 Correct 561 ms 28484 KB Output is correct
67 Correct 545 ms 28524 KB Output is correct
68 Correct 419 ms 19392 KB Output is correct
69 Correct 375 ms 17772 KB Output is correct
70 Correct 1 ms 1516 KB Output is correct