#include<cstdio>
#include<algorithm>
int a[111111];
int t[111111],tn;
int c[111111][555];
long long d[555][555];
int p[111111];
int main()
{
long long res;
int i,j,k,s,e,n,m,l,r;
scanf("%d%d",&n,&m);
for(i=0;i<n;i++)
{
scanf("%d",&a[i]);
t[i]=a[i];
}
std::sort(t,t+n);
tn=std::unique(t,t+n)-t;
for(i=0;i<n;i++)a[i]=std::lower_bound(t,t+tn,a[i])-t;
for(i=0;i<n;i++)
{
if(!(i&255))for(j=0;j<tn;j++)c[j][(i>>8)+1]=c[j][i>>8];
c[a[i]][(i>>8)+1]++;
}
for(i=0;i<(n>>8);i++)
{
for(j=i+1;j<=(n>>8);j++)
{
d[i][j]=d[i][j-1];
for(k=(j-1)<<8;k<(j<<8);k++)if(1LL*t[a[k]]*(c[a[k]][j]-c[a[k]][i])>d[i][j])d[i][j]=1LL*t[a[k]]*(c[a[k]][j]-c[a[k]][i]);
}
}
while(m--)
{
scanf("%d%d",&s,&e);
s--;
l=(s+255)>>8;
r=e>>8;
if(l<r)
{
res=d[l][r];
for(i=s;i<(l<<8);i++)p[a[i]]++;
for(i=r<<8;i<e;i++)p[a[i]]++;
for(i=s;i<(l<<8);i++)if(1LL*t[a[i]]*(p[a[i]]+c[a[i]][r]-c[a[i]][l])>res)res=1LL*t[a[i]]*(p[a[i]]+c[a[i]][r]-c[a[i]][l]);
for(i=r<<8;i<e;i++)if(1LL*t[a[i]]*(p[a[i]]+c[a[i]][r]-c[a[i]][l])>res)res=1LL*t[a[i]]*(p[a[i]]+c[a[i]][r]-c[a[i]][l]);
for(i=s;i<(l<<8);i++)p[a[i]]--;
for(i=r<<8;i<e;i++)p[a[i]]--;
}
else
{
res=0;
for(i=s;i<e;i++)p[a[i]]++;
for(i=s;i<e;i++)if(1LL*t[a[i]]*p[a[i]]>res)res=1LL*t[a[i]]*p[a[i]];
for(i=s;i<e;i++)p[a[i]]--;
}
printf("%lld\n",res);
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 2 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 3 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 4 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 5 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 6 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 7 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 8 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 9 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 10 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 11 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 12 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 13 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 14 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 15 |
Correct |
0 ms |
245676 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 2 |
Correct |
1 ms |
245676 KB |
Output is correct |
| 3 |
Correct |
2 ms |
245676 KB |
Output is correct |
| 4 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 5 |
Correct |
7 ms |
245676 KB |
Output is correct |
| 6 |
Correct |
10 ms |
245676 KB |
Output is correct |
| 7 |
Correct |
9 ms |
245676 KB |
Output is correct |
| 8 |
Correct |
12 ms |
245676 KB |
Output is correct |
| 9 |
Correct |
11 ms |
245676 KB |
Output is correct |
| 10 |
Correct |
12 ms |
245676 KB |
Output is correct |
| 11 |
Correct |
13 ms |
245676 KB |
Output is correct |
| 12 |
Correct |
12 ms |
245676 KB |
Output is correct |
| 13 |
Correct |
11 ms |
245676 KB |
Output is correct |
| 14 |
Correct |
7 ms |
245676 KB |
Output is correct |
| 15 |
Correct |
12 ms |
245676 KB |
Output is correct |
| 16 |
Correct |
10 ms |
245676 KB |
Output is correct |
| 17 |
Correct |
6 ms |
245676 KB |
Output is correct |
| 18 |
Correct |
15 ms |
245676 KB |
Output is correct |
| 19 |
Correct |
8 ms |
245676 KB |
Output is correct |
| 20 |
Correct |
16 ms |
245676 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 2 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 3 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 4 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 5 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 6 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 7 |
Correct |
0 ms |
245676 KB |
Output is correct |
| 8 |
Correct |
9 ms |
245676 KB |
Output is correct |
| 9 |
Correct |
24 ms |
245676 KB |
Output is correct |
| 10 |
Correct |
20 ms |
245676 KB |
Output is correct |
| 11 |
Correct |
137 ms |
245676 KB |
Output is correct |
| 12 |
Correct |
90 ms |
245676 KB |
Output is correct |
| 13 |
Correct |
205 ms |
245676 KB |
Output is correct |
| 14 |
Correct |
385 ms |
245676 KB |
Output is correct |
| 15 |
Correct |
414 ms |
245676 KB |
Output is correct |
| 16 |
Correct |
788 ms |
245676 KB |
Output is correct |
| 17 |
Correct |
133 ms |
245676 KB |
Output is correct |
| 18 |
Correct |
217 ms |
245676 KB |
Output is correct |
| 19 |
Correct |
614 ms |
245676 KB |
Output is correct |
| 20 |
Correct |
480 ms |
245676 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
25 ms |
245676 KB |
Output is correct |
| 2 |
Correct |
52 ms |
245676 KB |
Output is correct |
| 3 |
Correct |
109 ms |
245676 KB |
Output is correct |
| 4 |
Correct |
188 ms |
245676 KB |
Output is correct |
| 5 |
Correct |
278 ms |
245676 KB |
Output is correct |
| 6 |
Correct |
250 ms |
245676 KB |
Output is correct |
| 7 |
Correct |
234 ms |
245676 KB |
Output is correct |
| 8 |
Correct |
217 ms |
245676 KB |
Output is correct |
| 9 |
Correct |
253 ms |
245676 KB |
Output is correct |
| 10 |
Correct |
336 ms |
245676 KB |
Output is correct |
| 11 |
Correct |
286 ms |
245676 KB |
Output is correct |
| 12 |
Correct |
347 ms |
245676 KB |
Output is correct |
| 13 |
Correct |
534 ms |
245676 KB |
Output is correct |
| 14 |
Correct |
868 ms |
245676 KB |
Output is correct |
| 15 |
Correct |
1066 ms |
245676 KB |
Output is correct |
| 16 |
Correct |
975 ms |
245676 KB |
Output is correct |
| 17 |
Correct |
927 ms |
245676 KB |
Output is correct |
| 18 |
Correct |
899 ms |
245676 KB |
Output is correct |
| 19 |
Correct |
890 ms |
245676 KB |
Output is correct |
| 20 |
Correct |
849 ms |
245676 KB |
Output is correct |
| 21 |
Correct |
844 ms |
245676 KB |
Output is correct |
| 22 |
Correct |
830 ms |
245676 KB |
Output is correct |
| 23 |
Correct |
812 ms |
245676 KB |
Output is correct |
| 24 |
Correct |
813 ms |
245676 KB |
Output is correct |
| 25 |
Correct |
346 ms |
245676 KB |
Output is correct |
