This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
const int N=400050;
const int S=2;
const int M=N/S+1;
const int Q=25050;
multiset<pair<int,int>> st[M];
int a[N],n,q,ok[M];
bool mark[N];
int Push(int B, int x)
{
st[B].insert({x,0});
int p;tie(x,p)=*st[B].rbegin();
st[B].erase(--st[B].end());
if(p) mark[-p]=1,ok[B]=0;
return x;
}
void BuildBlock(int B, int l, int r){ for(int i=l;i<=r;i++) st[B].insert({a[i],-i}),mark[i]=0;ok[B]=1;}
void BreakBlock(int B)
{
if(ok[B]) st[B].clear();
else
{
int l=B*S,r=min((B+1)*S,n)-1;
for(int i=r;i>=l;i--)
{
if(mark[i])
{
int x,y;tie(x,y)=*st[B].rbegin();
st[B].erase(--st[B].end());
a[i]=x;
if(y) mark[-y]=1;
}
else
{
st[B].erase(st[B].find({a[i],-i}));
}
}
}
}
int Push(int B, int l, int r, int x)
{
BreakBlock(B);
for(int i=l;i<=r;i++) if(a[i]>x) swap(a[i],x);
BuildBlock(B,B*S,min((B+1)*S,n)-1);
return x;
}
void BuildAll(){ for(int l=0;l<n;l+=S) BuildBlock(l/S,l,min(l+S,n)-1);}
int Query(int l, int r, int x)
{
int L=l/S,R=r/S;
if(L==R)
{
x=Push(L,l,r,x);
}
else
{
x=Push(L,l,L*S+S-1,x);
for(int i=L+1;i<R;i++) x=Push(i,x);
x=Push(R,R*S,r,x);
}
return x;
}
int main()
{
scanf("%i %i",&n,&q);
for(int i=0;i<n;i++) scanf("%i",&a[i]);
BuildAll();
while(q--)
{
int l,r,x;
scanf("%i %i %i",&l,&r,&x);
l--;r--;
if(l<=r) x=Query(l,r,x);
else x=Query(0,r,Query(l,n-1,x));
printf("%i\n",x);
}
return 0;
}
Compilation message (stderr)
sushi.cpp: In function 'int main()':
sushi.cpp:66:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i %i",&n,&q);
~~~~~^~~~~~~~~~~~~~~
sushi.cpp:67:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=0;i<n;i++) scanf("%i",&a[i]);
~~~~~^~~~~~~~~~~~
sushi.cpp:72:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i %i %i",&l,&r,&x);
~~~~~^~~~~~~~~~~~~~~~~~~~~
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