Submission #2873710
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
const int maxn=2e5+9;
int n,m,k;
int a[maxn],b[maxn],c[maxn];
struct fxr
{
int val,id;
}q[maxn];
bool cmp(fxr a, fxr b)
{
return a.val<b.val;
}
int low(int x)
{
return x&(-x);
}
int sum(int x)
{
int res=0;
while(x>0)
{
res+=c[x];
x-=low(x);
}
return res;
}
void add(int x,int k)
{
while(x<=maxn)
{
c[x]+=k;
x+=low(x);
}
}
int main()
{
memset(c,0,sizeof c);
scanf("%d%d",&n,&k);
for(int i=1;i<=n;i++)
{
scanf("%d",&a[i]);
a[i]-=k;
q[i].val=a[i]+q[i-1].val;
q[i].id=i;
}
sort(q+1,q+n+1,cmp);
for(int i=1;i<=n;i++)
{
b[q[i].id]=i;
}
/*for(int i=1;i<=n;i++)
printf("%d ",b[i]);*/
int ans=0;
for(int i=1;i<=n;i++)
{
add(b[i],1);
ans+=sum(b[i]);
}
printf("%d",ans);
}
Submission Info
Submission Time
2018-07-21 12:25:37+0900
Task
E - Meaningful Mean
User
cnxup
Language
C++14 (GCC 5.4.1)
Score
0
Code Size
918 Byte
Status
WA
Exec Time
53 ms
Memory
4096 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:47:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&k);
^
./Main.cpp:50:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%d",&a[i]);
^
Judge Result
Set Name
Sample
All
Score / Max Score
0 / 0
0 / 600
Status
Set Name
Test Cases
Sample
a01, a02, a03
All
a01, a02, a03, b04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20, b21, b22, b23
Case Name
Status
Exec Time
Memory
a01
AC
2 ms
1024 KB
a02
WA
2 ms
1024 KB
a03
WA
2 ms
1024 KB
b04
AC
2 ms
1024 KB
b05
WA
39 ms
4096 KB
b06
WA
38 ms
4096 KB
b07
WA
52 ms
4096 KB
b08
WA
52 ms
4096 KB
b09
WA
38 ms
4096 KB
b10
WA
49 ms
4096 KB
b11
WA
2 ms
1024 KB
b12
WA
2 ms
1024 KB
b13
WA
19 ms
2176 KB
b14
WA
52 ms
4096 KB
b15
WA
32 ms
4096 KB
b16
WA
52 ms
4096 KB
b17
WA
52 ms
4096 KB
b18
WA
52 ms
4096 KB
b19
WA
53 ms
4096 KB
b20
WA
46 ms
4096 KB
b21
WA
39 ms
4096 KB
b22
WA
52 ms
4096 KB
b23
WA
53 ms
4096 KB