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;
int n,m,i,j,l,r,ans;
int mas[1000001],par[1000001],val[1000001],ori[1000001],hey[3000001],pre[1000001][20];
pair <int,int> p[1000001][20];
vector <int> v[1000001];
void dfs(int u) {
int i;
p[u][0]={par[u],val[u]};
for (i=1;i<20;i++)
if (p[p[u][i-1].first][i-1].first)
p[u][i]={p[p[u][i-1].first][i-1].first,max(p[u][i-1].second,p[p[u][i-1].first][i-1].second)};
for (i=0;i<v[u].size();i++)
dfs(v[u][i]);
}
int solve(int a,int b) {
int c=ori[b-a+1];
return max(pre[a][c],pre[b-(1<<c)+1][c]);
}
int main() {
for (i=1;i<20;i++)
ori[(1<<i)]=i;
for (i=1;i<1000001;i++)
if (!ori[i])
ori[i]=ori[i-1];
cin>>n>>m;
for (i=1;i<=n;i++) {
cin>>mas[i];
pre[i][0]=mas[i];
}
for (j=1;j<20;j++)
for (i=1;(i+(1<<j)-1)<=n;i++)
pre[i][j]=max(pre[i][j-1],pre[i+(1<<(j-1))][j-1]);
for (i=n;i>0;i--) {
for (;r>0;r--)
if (mas[hey[r]]>=mas[i])
break;
par[i]=hey[r];
v[hey[r]].push_back(i);
hey[++r]=i;
}
for (i=1;i<=n;i++)
if (par[i]>(i+1))
val[i]=mas[i]+solve(i+1,par[i]-1);
/*for (i=1;i<=n;i++)
cout<<val[i]<<" ";
cout<<endl;*/
for (i=0;i<v[0].size();i++)
dfs(v[0][i]);
while (cin>>l>>r>>m) {
if (l==r) {
cout<<"1"<<endl;
continue;
}
ans=0;
for (i=19;i>=0;i--)
if (p[l][i].first && p[l][i].first<=r) {
ans=max(ans,p[l][i].second);
l=p[l][i].first;
}
if (r>l)
ans=max(ans,mas[l]+solve(l+1,r));
if (ans>m)
cout<<"0"<<endl;
else
cout<<"1"<<endl;
}
}
Compilation message (stderr)
sortbooks.cpp: In function 'void dfs(int)':
sortbooks.cpp:13:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i=0;i<v[u].size();i++)
~^~~~~~~~~~~~
sortbooks.cpp: In function 'int main()':
sortbooks.cpp:48:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i=0;i<v[0].size();i++)
~^~~~~~~~~~~~
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