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답안 #295385

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
295385 2020-09-09T16:13:51 Z beso123 Mountains (NOI20_mountains) C++14
100 / 100
 533 ms 20192 KB 
#include <bits/stdc++.h>
#define int long long
#define pii pair<int,int>
#define x first
#define y second
using namespace std;
const int N=300005;
int n,a[N],l[N],r[N];
int bit[N];
int GET(int i){
	int sum=0;
	while(i>=1){
		sum+=bit[i];
		i=i-(i&(-i));
	}
	return sum;
}
void UPD(int i,int val){
	while(i<=n){
		bit[i]+=val;
		i=i+(i&(-i));
	}
}
vector<pii> v;
main(){
cin>>n;
for(int k=1;k<=n;k++)
    cin>>a[k];
for(int k=1;k<=n;k++){
    v.push_back({a[k],k});
}
sort(v.begin(),v.end());
a[v[0].y]=1;
for(int k=1;k<v.size();k++){
    a[v[k].y]=a[v[k-1].y];
    if(v[k].x!=v[k-1].x)
        a[v[k].y]++;
}
UPD(a[1],1);
for(int k=2;k<=n;k++){
    l[k]=GET(a[k]-1);
    UPD(a[k],1);
}
for(int k=1;k<=n;k++)
    bit[k]=0;
    UPD(a[n],1);
for(int k=n-1;k>=1;k--){
    r[k]=GET(a[k]-1);
    UPD(a[k],1);
}
int ans=0;
for(int k=1;k<=n;k++)
    ans+=l[k]*r[k];
cout<<ans;
return 0;
}

Compilation message

Mountains.cpp:25:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   25 | main(){
      |      ^
Mountains.cpp: In function 'int main()':
Mountains.cpp:34:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 | for(int k=1;k<v.size();k++){
      |             ~^~~~~~~~~
Mountains.cpp:44:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   44 | for(int k=1;k<=n;k++)
      | ^~~
Mountains.cpp:46:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   46 |     UPD(a[n],1);
      |     ^~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 488 ms 20048 KB Output is correct
3 Correct 484 ms 20176 KB Output is correct
4 Correct 489 ms 20048 KB Output is correct
5 Correct 495 ms 20048 KB Output is correct
6 Correct 483 ms 20052 KB Output is correct
7 Correct 480 ms 20064 KB Output is correct
8 Correct 493 ms 20176 KB Output is correct
9 Correct 499 ms 20048 KB Output is correct
10 Correct 492 ms 20176 KB Output is correct

Subtask #2
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 156 ms 15056 KB Output is correct
2 Correct 162 ms 15184 KB Output is correct
3 Correct 162 ms 15108 KB Output is correct
4 Correct 155 ms 15052 KB Output is correct
5 Correct 157 ms 15056 KB Output is correct
6 Correct 155 ms 15056 KB Output is correct
7 Correct 155 ms 15056 KB Output is correct
8 Correct 141 ms 15056 KB Output is correct
9 Correct 138 ms 15184 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 156 ms 15056 KB Output is correct
2 Correct 162 ms 15184 KB Output is correct
3 Correct 162 ms 15108 KB Output is correct
4 Correct 155 ms 15052 KB Output is correct
5 Correct 157 ms 15056 KB Output is correct
6 Correct 155 ms 15056 KB Output is correct
7 Correct 155 ms 15056 KB Output is correct
8 Correct 141 ms 15056 KB Output is correct
9 Correct 138 ms 15184 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 178 ms 15364 KB Output is correct
12 Correct 186 ms 15440 KB Output is correct
13 Correct 178 ms 15440 KB Output is correct
14 Correct 175 ms 15440 KB Output is correct
15 Correct 177 ms 15440 KB Output is correct
16 Correct 178 ms 15440 KB Output is correct
17 Correct 177 ms 15440 KB Output is correct
18 Correct 153 ms 15312 KB Output is correct
19 Correct 162 ms 15440 KB Output is correct
20 Correct 0 ms 384 KB Output is correct

Subtask #4
36.0 / 36.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 17 ms 1148 KB Output is correct
12 Correct 17 ms 1148 KB Output is correct
13 Correct 17 ms 1148 KB Output is correct
14 Correct 17 ms 1148 KB Output is correct
15 Correct 17 ms 1140 KB Output is correct
16 Correct 18 ms 1148 KB Output is correct
17 Correct 17 ms 1148 KB Output is correct
18 Correct 17 ms 1148 KB Output is correct
19 Correct 6 ms 1020 KB Output is correct
20 Correct 0 ms 384 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 156 ms 15056 KB Output is correct
2 Correct 162 ms 15184 KB Output is correct
3 Correct 162 ms 15108 KB Output is correct
4 Correct 155 ms 15052 KB Output is correct
5 Correct 157 ms 15056 KB Output is correct
6 Correct 155 ms 15056 KB Output is correct
7 Correct 155 ms 15056 KB Output is correct
8 Correct 141 ms 15056 KB Output is correct
9 Correct 138 ms 15184 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 178 ms 15364 KB Output is correct
12 Correct 186 ms 15440 KB Output is correct
13 Correct 178 ms 15440 KB Output is correct
14 Correct 175 ms 15440 KB Output is correct
15 Correct 177 ms 15440 KB Output is correct
16 Correct 178 ms 15440 KB Output is correct
17 Correct 177 ms 15440 KB Output is correct
18 Correct 153 ms 15312 KB Output is correct
19 Correct 162 ms 15440 KB Output is correct
20 Correct 0 ms 384 KB Output is correct
21 Correct 239 ms 16336 KB Output is correct
22 Correct 243 ms 16208 KB Output is correct
23 Correct 247 ms 16284 KB Output is correct
24 Correct 241 ms 16336 KB Output is correct
25 Correct 242 ms 16208 KB Output is correct
26 Correct 242 ms 16336 KB Output is correct
27 Correct 240 ms 16336 KB Output is correct
28 Correct 212 ms 16208 KB Output is correct
29 Correct 211 ms 16464 KB Output is correct
30 Correct 1 ms 384 KB Output is correct

Subtask #7
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 488 ms 20048 KB Output is correct
3 Correct 484 ms 20176 KB Output is correct
4 Correct 489 ms 20048 KB Output is correct
5 Correct 495 ms 20048 KB Output is correct
6 Correct 483 ms 20052 KB Output is correct
7 Correct 480 ms 20064 KB Output is correct
8 Correct 493 ms 20176 KB Output is correct
9 Correct 499 ms 20048 KB Output is correct
10 Correct 492 ms 20176 KB Output is correct
11 Correct 156 ms 15056 KB Output is correct
12 Correct 162 ms 15184 KB Output is correct
13 Correct 162 ms 15108 KB Output is correct
14 Correct 155 ms 15052 KB Output is correct
15 Correct 157 ms 15056 KB Output is correct
16 Correct 155 ms 15056 KB Output is correct
17 Correct 155 ms 15056 KB Output is correct
18 Correct 141 ms 15056 KB Output is correct
19 Correct 138 ms 15184 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 178 ms 15364 KB Output is correct
22 Correct 186 ms 15440 KB Output is correct
23 Correct 178 ms 15440 KB Output is correct
24 Correct 175 ms 15440 KB Output is correct
25 Correct 177 ms 15440 KB Output is correct
26 Correct 178 ms 15440 KB Output is correct
27 Correct 177 ms 15440 KB Output is correct
28 Correct 153 ms 15312 KB Output is correct
29 Correct 162 ms 15440 KB Output is correct
30 Correct 0 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 1 ms 384 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 1 ms 384 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 0 ms 384 KB Output is correct
41 Correct 17 ms 1148 KB Output is correct
42 Correct 17 ms 1148 KB Output is correct
43 Correct 17 ms 1148 KB Output is correct
44 Correct 17 ms 1148 KB Output is correct
45 Correct 17 ms 1140 KB Output is correct
46 Correct 18 ms 1148 KB Output is correct
47 Correct 17 ms 1148 KB Output is correct
48 Correct 17 ms 1148 KB Output is correct
49 Correct 6 ms 1020 KB Output is correct
50 Correct 0 ms 384 KB Output is correct
51 Correct 239 ms 16336 KB Output is correct
52 Correct 243 ms 16208 KB Output is correct
53 Correct 247 ms 16284 KB Output is correct
54 Correct 241 ms 16336 KB Output is correct
55 Correct 242 ms 16208 KB Output is correct
56 Correct 242 ms 16336 KB Output is correct
57 Correct 240 ms 16336 KB Output is correct
58 Correct 212 ms 16208 KB Output is correct
59 Correct 211 ms 16464 KB Output is correct
60 Correct 1 ms 384 KB Output is correct
61 Correct 519 ms 20176 KB Output is correct
62 Correct 512 ms 20176 KB Output is correct
63 Correct 514 ms 20176 KB Output is correct
64 Correct 511 ms 20048 KB Output is correct
65 Correct 533 ms 20176 KB Output is correct
66 Correct 511 ms 20048 KB Output is correct
67 Correct 511 ms 20048 KB Output is correct
68 Correct 526 ms 20192 KB Output is correct
69 Correct 248 ms 16592 KB Output is correct
70 Correct 1 ms 384 KB Output is correct