oj.uz

Submission #305970

# Submission time Handle Problem Language Result Execution time Memory
305970 2020-09-24T08:10:51 Z juggernaut Dreaming (IOI13_dreaming) C++14
Compilation error
 0 ms 0 KB 
#include"dreaming.h"
//#include"grader.c"
#include<bits/stdc++.h>
#define fr first
#define sc second
using namespace std;
vector<pair<int,int>>g[100005];
bool vis[100005];
int mx[100005],mx2[100005],id[100005],mm,idd;
int dfs(int v,int p){
    vis[v]=1;
    int i=0,x;
    for(;i<g[v].size();i++)
        if(g[v][i].fr!=p){
            x=dfs(g[v][i].fr,v)+g[v][i].sc;
            if(x>mx2[v]){
                mx2[v]=x;
                id[v]=g[v][i].fr;
            }
        }
    return mx2[v];
}
void go(int v,int p,int val,int depth){
    mx[v]=max(val,depth);
    int m=0,i=0;
    for(;i<g[v].size();i++)
        if(g[v][i].fr!=p)
        if(g[v][i].fr!=id[v]){
            m=max(m,mx2[g[v][i].fr]+g[v][i].sc);
            go(g[v][i].fr,v,max(mx2[v],val)+g[v][i].sc,depth+g[v][i].sc);
        }
    if(id[v]!=-1)go(id[v],v,max(m,val)+g[v][i].sc,depth+g[v][i].sc);
}
void calc(int v,int p){
    if(max(mx2[v],mx[v])<mm){
        mm=max(mx2[v],mx[v]);
        idd=v;
    }
    for(auto to:g[v])if(to.fr!=p)calc(to.fr,v);
}
void diam(int v,int p,int depth){
    if(depth>mm){
        mm=depth;
        idd=v;
    }
    for(auto to:g[v])if(to.fr!=p)diam(to.fr,v,depth+to.sc);
}
int travelTime(int n,int m,int l,int x[],int y[],int z[]){
    memset(id,-1,sizeof(id));
    for(int i=0;i<m;i++){
        g[x[i]].push_back({y[i],z[i]});
        g[y[i]].push_back({x[i],z[i]});
    }
    set<pair<int,int>>st;
    g[n].push_back({n,0});
    for(int i=0;i<n;i++)if(!vis[i]){
        g[n][0].fr=i;
        dfs(n,n);
        go(n,n,0,0);
        mm=2e9;
        calc(n,n);
        st.insert({mm,idd});
    }
    g[n].clear();
    while(st.size()>0){
        auto a=*st.begin();
        st.erase(st.begin());
        auto b=*st.begin();
        st.erase(st.begin());
        a.fr=min();
        if(max(a.fr,b.fr+l)<max(b.fr,a.fr+l))
            st.insert({max(a.fr,b.fr+l),a.sc});
        else
            st.insert({max(b.fr,a.fr+l),b.sc});
        g[a.sc].push_back({b.sc,l});
        g[b.sc].push_back({a.sc,l});
    }
    mm=0;
    diam(0,0,0);
    mm=0;
    diam(idd,idd,0);
    return mm;
}

Compilation message

dreaming.cpp: In function 'int dfs(int, int)':
dreaming.cpp:13:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(;i<g[v].size();i++)
      |          ~^~~~~~~~~~~~
dreaming.cpp: In function 'void go(int, int, int, int)':
dreaming.cpp:26:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(;i<g[v].size();i++)
      |          ~^~~~~~~~~~~~
dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:70:18: error: no matching function for call to 'min()'
   70 |         a.fr=min();
      |                  ^
In file included from /usr/include/c++/9/bits/char_traits.h:39,
                 from /usr/include/c++/9/ios:40,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from dreaming.cpp:3:
/usr/include/c++/9/bits/stl_algobase.h:198:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  198 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/9/bits/stl_algobase.h:198:5: note:   template argument deduction/substitution failed:
dreaming.cpp:70:18: note:   candidate expects 2 arguments, 0 provided
   70 |         a.fr=min();
      |                  ^
In file included from /usr/include/c++/9/bits/char_traits.h:39,
                 from /usr/include/c++/9/ios:40,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from dreaming.cpp:3:
/usr/include/c++/9/bits/stl_algobase.h:246:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  246 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/9/bits/stl_algobase.h:246:5: note:   template argument deduction/substitution failed:
dreaming.cpp:70:18: note:   candidate expects 3 arguments, 0 provided
   70 |         a.fr=min();
      |                  ^
In file included from /usr/include/c++/9/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
                 from dreaming.cpp:3:
/usr/include/c++/9/bits/stl_algo.h:3444:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(std::initializer_list<_Tp>)'
 3444 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/9/bits/stl_algo.h:3444:5: note:   template argument deduction/substitution failed:
dreaming.cpp:70:18: note:   candidate expects 1 argument, 0 provided
   70 |         a.fr=min();
      |                  ^
In file included from /usr/include/c++/9/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:65,
                 from dreaming.cpp:3:
/usr/include/c++/9/bits/stl_algo.h:3450:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(std::initializer_list<_Tp>, _Compare)'
 3450 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/9/bits/stl_algo.h:3450:5: note:   template argument deduction/substitution failed:
dreaming.cpp:70:18: note:   candidate expects 2 arguments, 0 provided
   70 |         a.fr=min();
      |                  ^