Submission #165474

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
165474	2019-11-27T11:08:51 Z	Segtree	Shortcut (IOI16_shortcut)	C++14	Compilation error	0 ms	0 KB

shortcut

#include<iostream>
#include<algorithm>
#include<vector>
#include<queue>
#include"shortcut.h"
using namespace std;
typedef long long ll;
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)
ll r[N],d[N],n,cost;
ll solve(ll p,ll q){
    ll x=-1e17;
    for(int i=0;i<=p;i++){
	chmax(x,r[p]-r[i]+d[i]);
    }
    ll y=-1e17;
    for(int i=q;i<n;i++){
	chmax(y,r[i]-r[q]+d[i]);
    }
    ll ans=x+y+cost;
    for(int i=p;i<=q;i++){
	chmax(ans,x+d[i]+min(r[i]-r[p],r[q]-r[i]+cost));
	chmax(ans,y+d[i]+min(r[i]-r[p]+cost,r[q]-r[i]));
    }
    vector<int> rs,ds;
    for(int i=p;i<=q;i++){
	rs.push_back(r[i]-r[p]);
	ds.push_back(d[i]);
    }
    for(int i=p;i<=q;i++){
	rs.push_back(r[i]-r[p]+cost+r[q]-r[p]);
	ds.push_back(d[i]);
    }
    ll key=cost+r[q]-r[p];
    int j=0;
    deque<pair<ll,ll> > Q;
    for(int i=0;i<rs.size()/2;i++){
	while(!Q.empty()&&Q.front().second<=i)Q.pop_front();
	for(;(rs[j]-rs[i])*2<=key;j++){
	    while(!Q.empty()&&Q.back().first<=rs[j]+ds[j]){
		Q.pop_back();
	    }
	    Q.push_back(make_pair(rs[j]+ds[j],i));
	}
	chmax(ans,Q.front().first-rs[i]+ds[i]);
    }
    //cout<<"#"<<p<<" "<<q<<" "<<ans<<endl;
    return ans;
}
ll find_shortcut(int nn,vector<int> l,vector<int> dd,int cc){
    n=nn,cost=cc;
    for(int i=0;i<n;i++)d[i]=dd[i];
    r[0]=0;
    for(int i=0;i<n-1;i++)r[i+1]=r[i]+l[i];
    ll ans=1e17;
    for(int p=0;p<n;p++)for(int q=p+1;q<n;q++){
	chmin(ans,solve(p,q));
    }
    return ans;
}

Compilation message

shortcut.cpp:10:6: error: 'N' was not declared in this scope
 ll r[N],d[N],n,cost;
      ^
shortcut.cpp:10:11: error: 'N' was not declared in this scope
 ll r[N],d[N],n,cost;
           ^
shortcut.cpp: In function 'll solve(ll, ll)':
shortcut.cpp:14:10: error: 'r' was not declared in this scope
  chmax(x,r[p]-r[i]+d[i]);
          ^
shortcut.cpp:9:28: note: in definition of macro 'chmax'
 #define chmax(a,b) a=max(a,b)
                            ^
shortcut.cpp:14:20: error: 'd' was not declared in this scope
  chmax(x,r[p]-r[i]+d[i]);
                    ^
shortcut.cpp:9:28: note: in definition of macro 'chmax'
 #define chmax(a,b) a=max(a,b)
                            ^
shortcut.cpp:18:10: error: 'r' was not declared in this scope
  chmax(y,r[i]-r[q]+d[i]);
          ^
shortcut.cpp:9:28: note: in definition of macro 'chmax'
 #define chmax(a,b) a=max(a,b)
                            ^
shortcut.cpp:18:20: error: 'd' was not declared in this scope
  chmax(y,r[i]-r[q]+d[i]);
                    ^
shortcut.cpp:9:28: note: in definition of macro 'chmax'
 #define chmax(a,b) a=max(a,b)
                            ^
shortcut.cpp:22:14: error: 'd' was not declared in this scope
  chmax(ans,x+d[i]+min(r[i]-r[p],r[q]-r[i]+cost));
              ^
shortcut.cpp:9:28: note: in definition of macro 'chmax'
 #define chmax(a,b) a=max(a,b)
                            ^
shortcut.cpp:22:23: error: 'r' was not declared in this scope
  chmax(ans,x+d[i]+min(r[i]-r[p],r[q]-r[i]+cost));
                       ^
shortcut.cpp:9:28: note: in definition of macro 'chmax'
 #define chmax(a,b) a=max(a,b)
                            ^
shortcut.cpp:27:15: error: 'r' was not declared in this scope
  rs.push_back(r[i]-r[p]);
               ^
shortcut.cpp:28:15: error: 'd' was not declared in this scope
  ds.push_back(d[i]);
               ^
shortcut.cpp:31:15: error: 'r' was not declared in this scope
  rs.push_back(r[i]-r[p]+cost+r[q]-r[p]);
               ^
shortcut.cpp:32:15: error: 'd' was not declared in this scope
  ds.push_back(d[i]);
               ^
shortcut.cpp:34:17: error: 'r' was not declared in this scope
     ll key=cost+r[q]-r[p];
                 ^
shortcut.cpp:34:17: note: suggested alternative: 'rs'
     ll key=cost+r[q]-r[p];
                 ^
                 rs
shortcut.cpp:37:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<rs.size()/2;i++){
                 ~^~~~~~~~~~~~
shortcut.cpp: In function 'll find_shortcut(int, std::vector<int>, std::vector<int>, int)':
shortcut.cpp:52:25: error: 'd' was not declared in this scope
     for(int i=0;i<n;i++)d[i]=dd[i];
                         ^
shortcut.cpp:53:5: error: 'r' was not declared in this scope
     r[0]=0;
     ^