Submission #486812

#TimeUsernameProblemLanguageResultExecution timeMemory
486812HaidaraArranging Shoes (IOI19_shoes)C++17
Compilation error
0 ms0 KiB
#include<bits/stdc++.h> #include<shoes.h> #define rep(i,x,n) for(int i=(x);i<(n);i++) #define FOR(i,n) rep(i,0,n) #define v(i) vector< i > #define ll long long using namespace std; const ll inf=1LL<<62LL; const ll mod=1e9+7; const ll maxn=100200; ll st[maxn]; int n; int query(int pos,int l=1,int r=n,int inx=1) { if(l==r) return st[inx]; int mid=l+(r-l)/2; st[inx*2]+=st[inx]; st[inx*2+1]+=st[inx]; st[inx]=0; if(pos<=mid) return query(pos,l,mid,inx*2); return query(pos,mid+1,r,inx*2+1); } void update(int ql,int qr,int l=1,int r=n,int inx=1) { if(ql<=l&&r<=qr){ st[inx]++; return ; } if(ql>r||l>qr) return ; st[inx*2]+=st[inx]; st[inx*2+1]+=st[inx]; st[inx]=0; int mid=l+(r-l)/2; update(ql,qr,l,mid,inx*2); update(ql,qr,mid+1,r,inx*2+1); } ll count_swaps(v(int)a) { ll ans=0; n=a.size(); set<int>posl[maxn],posr[maxn]; FOR(i,n) if(a[i]<0) posl[-a[i]].insert(i); else posr[a[i]].insert(i); v(bool)vis(maxn,0); FOR(i,n) { if(vis[i]) continue; if(a[i]>0) ans++; a[i]=abs(a[i]); auto right=*posr[a[i]].begin(); auto left=*posl[a[i]].begin(); posl[a[i]].erase(posl[a[i]].begin()); posr[a[i]].erase(posr[a[i]].begin()); vis[right]=1; vis[left]=1; if(left>right) swap(left,right); ans+=(*right+query(*right+1)-*left-query(*left+1)-1); update(*left+1+query(*left+1),*right+1+query(*right+1)); } return ans; }

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:66:9: error: invalid type argument of unary '*' (have 'int')
   66 |   ans+=(*right+query(*right+1)-*left-query(*left+1)-1);
      |         ^~~~~~
shoes.cpp:66:22: error: invalid type argument of unary '*' (have 'int')
   66 |   ans+=(*right+query(*right+1)-*left-query(*left+1)-1);
      |                      ^~~~~~
shoes.cpp:66:32: error: invalid type argument of unary '*' (have 'int')
   66 |   ans+=(*right+query(*right+1)-*left-query(*left+1)-1);
      |                                ^~~~~
shoes.cpp:66:44: error: invalid type argument of unary '*' (have 'int')
   66 |   ans+=(*right+query(*right+1)-*left-query(*left+1)-1);
      |                                            ^~~~~
shoes.cpp:67:11: error: invalid type argument of unary '*' (have 'int')
   67 |    update(*left+1+query(*left+1),*right+1+query(*right+1));
      |           ^~~~~
shoes.cpp:67:25: error: invalid type argument of unary '*' (have 'int')
   67 |    update(*left+1+query(*left+1),*right+1+query(*right+1));
      |                         ^~~~~
shoes.cpp:67:34: error: invalid type argument of unary '*' (have 'int')
   67 |    update(*left+1+query(*left+1),*right+1+query(*right+1));
      |                                  ^~~~~~
shoes.cpp:67:49: error: invalid type argument of unary '*' (have 'int')
   67 |    update(*left+1+query(*left+1),*right+1+query(*right+1));
      |                                                 ^~~~~~