이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#define maxn 800010
using namespace std;
int n, m, a[maxn], ans;
struct node
{
int res;
node(){
res = 0;
}
};
node segTree[maxn];
vector<int> sorted[maxn];
void init(int idx, int l, int r){
//cerr<< idx<< '\n';
if(l == r){
//segTree[idx].maxS = segTree[idx].minS = a[l];
//cerr<< 'a';
sorted[idx].clear();
sorted[idx]={a[l]};
//cerr<<'b';
return;
}
int mid = (r+l)/2;
init(idx*2+1, l, mid);
init(idx*2+2, mid+1, r);
//cerr<< sorted[idx*2+1].size( ) << '\n';
//segTree[idx].maxS = max(segTree[idx*2+1].maxS, segTree[idx*2+2].maxS);
//segTree[idx].minS = min(segTree[idx*2+1].minS, segTree[idx*2+2].minS);
//segTree[idx].res = max(segTree[idx*2+1].res, segTree[idx*2+2].res);
//int n1 =sorted[idx*2+1].size(), m1 = sorted[idx*2+2].size();
//cerr<< sorted[idx*2+1].size() << '\n';
sorted[idx].clear();
sorted[idx].resize(sorted[idx*2+1].size()+sorted[idx*2+2].size());
merge(sorted[idx*2+1].begin(), sorted[idx*2+1].end(), sorted[idx*2+2].begin(), sorted[idx*2+2].end(), sorted[idx].begin());
// for(int i = 0, j = 0; i < n1 and j < m1; i = min(i, n1-1), j =min(j, m1-1)){
// int a = sorted[idx*2+1][i], b = sorted[idx*2+2][j];
// if(a < b){
// sorted[idx].push_back(a);
// ++i;
// } else {
// sorted[idx].push_back(b);
// ++j;
// }
// } //cerr<< 'a' << '\n';
int tmp = lower_bound(sorted[idx*2+2].begin(), sorted[idx*2+2].end(), sorted[idx*2+1].back()) - sorted[idx*2+2].begin();
--tmp;
if(tmp >= 0){
segTree[idx].res = max(segTree[idx].res, sorted[idx*2+2][tmp] + sorted[idx*2+1].back() );
}
}
vector<int> allIx;
int query(int idx, int l, int r, int ql, int qr){
if(l >= ql and r <= qr){
allIx.push_back(idx);
return segTree[idx].res;
}
if(l > qr or r<ql){
return 0;
}
int mid = (l+r)/2;
return max(query(idx*2+1, l, mid, ql, qr),query(idx*2+2, mid+1, r, ql, qr));
}
int main(){
ios_base::sync_with_stdio(0);
cout.tie(0);
cin.tie(0);
cin >> n >> m;
for(int i = 0; i < n; ++i){
cin >> a[i];
}
init(0, 0, n-1);
for(int i = 0; i < m; ++i){
int l,r,k;
cin>>l>>r>>k;
--l, --r;
if(l == r){
cout << "1\n";
continue;
}
allIx.clear();
// if(n <= 5000){
// int tmp = 0,res = 0;
// for(int i=l; i <= r; ++i){
// if(tmp > a[i]){
// res = max(res, tmp+a[i]);
// }
//
// tmp = max(tmp, a[i]);
// }
// cout << (res<=k) << '\n';
// continue;
// }
int tmp = query(0,0, n-1,l,r), pr = 0;
for(auto j:allIx){
int tmpIdx=lower_bound(sorted[j].begin(), sorted[j].end(),pr)-sorted[j].begin();
--tmpIdx;
if(tmpIdx >= 0){
tmp = max(sorted[j][tmpIdx] + pr, tmp);
}
pr = sorted[j].back();
}
cout << (tmp<=k) << '\n';
}
}
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