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 <stdio.h>
#include <map>
#include <algorithm>
#include <vector>
using namespace std;
#define ll long long
const int N=200050;
const int M=32*N*2;
const ll inf=1e18;
int ls[M],rs[M],tsz,root,root2;ll Min[M];
void Set(int &c, int ss, int se, int qi, ll val)
{
if(!c) c=++tsz,Min[c]=val;
Min[c]=min(Min[c],val);
if(ss==se) return;
int mid=ss+se>>1;
if(qi<=mid) Set(ls[c],ss,mid,qi,val);
else Set(rs[c],mid+1,se,qi,val);
}
ll Get(int c, int ss, int se, int qs, int qe)
{
if(qs>se || ss>qe || qs>qe) return inf;
if(qs<=ss && qe>=se) return Min[c];
int mid=ss+se>>1;
return min(Get(ls[c],ss,mid,qs,qe),Get(rs[c],mid+1,se,qs,qe));
}
map<int,ll> dp1,dp2;
int a[N],b[N],c[N];
ll d1[N],d2[N],d[N];
vector<int> id;
int Find(int x){ return lower_bound(id.begin(),id.end(),x)-id.begin()+1;}
int Upper(int x){ return upper_bound(id.begin(),id.end(),x)-id.begin();}
int main()
{
Min[0]=inf;
int n,m,i;
scanf("%i %i",&n,&m);
for(i=1;i<=n;i++) scanf("%i %i %i %lld",&a[i],&b[i],&c[i],&d[i]),dp1[c[i]]=dp2[c[i]]=inf,d1[i]=d2[i]=inf,id.push_back(c[i]);
sort(id.begin(),id.end());
for(i=1;i<=n;i++)
{
ll y;
if(a[i]==1)
{
ll x=dp1[c[i]];y=d[i];
dp1[c[i]]=min(x,y);
Set(root,1,m,Find(c[i]),d[i]);
}
else
{
ll x=dp1[c[i]];y=Get(root,1,m,Find(a[i]),Upper(b[i]))+d[i];
dp1[c[i]]=min(x,y);
Set(root,1,m,Find(c[i]),dp1[c[i]]);
}
d1[i]=y;
}
for(i=1;i<=n;i++)
{
ll y;
if(b[i]==m)
{
ll x=dp2[c[i]];y=d[i];
dp2[c[i]]=min(x,y);
Set(root2,1,m,Find(c[i]),d[i]);
}
else
{
ll x=dp2[c[i]];y=Get(root2,1,m,Find(a[i]),Upper(b[i]))+d[i];
dp2[c[i]]=min(x,y);
Set(root2,1,m,Find(c[i]),dp2[c[i]]);
}
d2[i]=y;
}
ll sol=inf;
for(i=1;i<=n;i++) sol=min(sol,dp1[c[i]]+dp2[c[i]]),sol=min(sol,d1[i]+d2[i]-d[i]);
if(sol>=inf) printf("-1\n");
else printf("%lld\n",sol);
//for(i=1;i<=n;i++) printf("%lld %lld\n",d1[i],d2[i]);
return 0;
}
Compilation message (stderr)
pinball.cpp: In function 'void Set(int&, int, int, int, long long int)':
pinball.cpp:16:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=ss+se>>1;
~~^~~
pinball.cpp: In function 'long long int Get(int, int, int, int, int)':
pinball.cpp:24:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=ss+se>>1;
~~^~~
pinball.cpp: In function 'int main()':
pinball.cpp:37:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%i %i",&n,&m);
~~~~~^~~~~~~~~~~~~~~
pinball.cpp:38:109: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(i=1;i<=n;i++) scanf("%i %i %i %lld",&a[i],&b[i],&c[i],&d[i]),dp1[c[i]]=dp2[c[i]]=inf,d1[i]=d2[i]=inf,id.push_back(c[i]);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
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