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 a,b,c,d,e,i,j,ii,jj,zx,xc,tes,t,L[100009],R[100009],ans[100009],seg[400009],SEG[400009],seg2[400009],l,r,z,zz,za;
pair <pair <int, int>, int> p[100009];
vector <pair <int, int> > v[100009];
void NO(){
for(i=1; i<=a; i++){
cout<<"-1 ";
}
exit(0);
}
void pushdown(int q, int w, int rr){
if(q!=w){
seg2[rr*2]+=seg2[rr];
seg2[rr*2+1]+=seg2[rr];
}
seg[rr]+=seg2[rr];
seg2[rr]=0;
}
void upd(int q, int w, int rr){
pushdown(q,w,rr);
if(q>r||w<l) return;
if(q>=l&&w<=r){
seg2[rr]+=z;
pushdown(q,w,rr);
return;
}
upd(q,(q+w)/2,rr*2);
upd((q+w)/2+1,w,rr*2+1);
if(seg[rr*2]<=seg[rr*2+1]){
seg[rr]=seg[rr*2];
SEG[rr]=SEG[rr*2];
}else{
seg[rr]=seg[rr*2+1];
SEG[rr]=SEG[rr*2+1];
}
}
void read(int q, int w, int rr){
pushdown(q,w,rr);
if(q>r||w<l) return;
if(q>=l&&w<=r){
if(z>seg[rr]){
z=seg[rr];zz=SEG[rr];
}
return;
}
read(q,(q+w)/2,rr*2);
read((q+w)/2+1,w,rr*2+1);
}
int main(){
ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
cin>>a>>tes;
for(t=1; t<=tes; t++){
cin>>p[t].first.first>>p[t].first.second>>p[t].second;
p[t].first.first++;p[t].first.second++;
}
za=1;
while(za<a) za*=2;
for(i=1; i<=a; i++){
seg[za+i-1]=0;SEG[za+i-1]=i;seg2[za+i-1]=0;
}
for(i=za-1; i>=1; i--){
seg[i]=seg[i*2];
SEG[i]=SEG[i*2];
}
for(i=0; i<a; i++){
L[i]=1;R[i]=a;
}
for(t=1; t<=tes; t++){
c=p[t].first.first;d=p[t].first.second;e=p[t].second;
L[e]=max(L[e],c);
R[e]=min(R[e],d);
v[e].push_back({c,d});
l=c;r=d;z=1;
upd(1,za,1);
}
for(i=0; i<a; i++){
if(L[i]>R[i]){
NO();
}
}
for(i=0; i<a; i++){
for(vector <pair <int, int> >::iterator it=v[i].begin(); it!=v[i].end(); it++){
l=(*it).first;r=(*it).second;z=-1;
upd(1,za,1);
}
c=L[i];d=R[i];
l=c;r=d;z=tes+4;zz=0;
read(1,za,1);
//cout<<i<<": "<<l<<" "<<r<<" "<<z<<" "<<zz<<"\n";
if(z==0){
ans[zz]=i;
l=zz;r=zz;z=tes+4;
upd(1,za,1);
}else{
NO();
}
}
for(i=1; i<=a; i++){
cout<<ans[i]<<" ";
}
return 0;
}
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