Submission #917636

#	Time	Username	Problem	Language	Result	Execution time	Memory
917636		shenfe1	Cyberland (APIO23_cyberland)	C++17	97 / 100	3045 ms	158544 KiB

cyberland

#include <bits/stdc++.h>
#include "cyberland.h"

#pragma GCC optimize("Ofast")
#pragma comment(linker, "/stack:200000000")
#pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native" )
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("profile-values,profile-reorder-functions,tracer")
#pragma GCC optimize("vpt")
#pragma GCC optimize("rename-registers")
#pragma GCC optimize("move-loop-invariants")
#pragma GCC optimize("unswitch-loops")
#pragma GCC optimize("function-sections")
#pragma GCC optimize("data-sections")
#pragma GCC optimize("branch-target-load-optimize")
#pragma GCC optimize("branch-target-load-optimize2")
#pragma GCC optimize("btr-bb-exclusive")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")
#pragma GCC tartget("avx2")

using namespace std;

#define F first
#define S second
#define pb push_back
#define pii pair<int,int>

const int MAX=1e5+15;
const double inf=1e18;

int use[MAX];
vector<pii> g[MAX];

void dfs(int v,int stop){
  use[v]=1;
  if(v==stop)return;
  for(auto to:g[v]){
    if(!use[to.F])dfs(to.F,stop);
  }
}

double solve(int n,int m,int k,int h,vector<int> x,vector<int> y,vector<int> c,vector<int> arr){
  double dp[n+1][67];
  for(int i=1;i<=n;i++){
    use[i]=0;
    g[i].clear();
  }
  for(int i=0;i<m;i++){
    x[i]++;
    y[i]++;
    g[x[i]].pb({y[i],c[i]});
    g[y[i]].pb({x[i],c[i]});
    // cout<<x[i]<<" "<<y[i]<<" "<<c[i]<<"\n";
  }
  dfs(1,h+1);
  if(!use[h+1]){
    return -1.0;
  }
  k=min(k,66);
  h++;
  for(int i=1;i<=n;i++){
    for(int j=0;j<=k;j++)dp[i][j]=inf;
  }
  priority_queue<pair<double,pii>> q;
  for(int i=1;i<=n;i++){
    if((i==1||arr[i-1]==0)&&use[i]){
      dp[i][0]=0;
      q.push({0,{i,0}});
    }
  }
  while(!q.empty()){
    int v=q.top().S.F,c=q.top().S.S;
    if(dp[v][c]<-q.top().F||v==h){
      q.pop();
      continue;
    }
    q.pop();
    // cout<<v<<" "<<c<<" "<<dp[v][c]<<"\n";
    for(auto to:g[v]){
      if(dp[v][c]+to.S<dp[to.F][c]){
        dp[to.F][c]=dp[v][c]+to.S;
        q.push({-dp[to.F][c],{to.F,c}});
      }
      if(arr[to.F-1]==2){
        if(c+1<=k&&(dp[v][c]+to.S)/2<dp[to.F][c+1]){
          dp[to.F][c+1]=(dp[v][c]+to.S)/2;
          q.push({-dp[to.F][c+1],{to.F,c+1}});
        }
      }
    }
  }
  double ans=inf;
  for(int i=0;i<=k;i++)ans=min(ans,dp[h][i]);
  return ans;
}

// int main(){
//   ios_base::sync_with_stdio(0);
//   cin.tie(0);
//   cout.tie(0);
//   int t;
//   cin>>t;
//   cout.precision(10);
//   while(t--){
//     int n,m,k,h;
//     cin>>n>>m>>k>>h;
//     vector<int> arr(n);
//     for(int i=0;i<n;i++)cin>>arr[i];
//     vector<int> x(m),y(m),c(m);
//     for(int i=0;i<m;i++)cin>>x[i]>>y[i]>>c[i];
//     cout<<fixed<<solve(n,m,k,h,x,y,c,arr)<<"\n";
//   }
// }

Compilation message (stderr)

cyberland.cpp:5: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    5 | #pragma comment(linker, "/stack:200000000")
      | 
cyberland.cpp:56: warning: ignoring '#pragma GCC tartget' [-Wunknown-pragmas]
   56 | #pragma GCC tartget("avx2")
      | 
cyberland.cpp:8:71: warning: bad option '-fprofile-values' to pragma 'optimize' [-Wpragmas]
    8 | #pragma GCC optimize("profile-values,profile-reorder-functions,tracer")
      |                                                                       ^
cyberland.cpp:13:41: warning: bad option '-ffunction-sections' to pragma 'optimize' [-Wpragmas]
   13 | #pragma GCC optimize("function-sections")
      |                                         ^
cyberland.cpp:14:37: warning: bad option '-fdata-sections' to pragma 'optimize' [-Wpragmas]
   14 | #pragma GCC optimize("data-sections")
      |                                     ^
cyberland.cpp:15:51: warning: bad option '-fbranch-target-load-optimize' to pragma 'optimize' [-Wpragmas]
   15 | #pragma GCC optimize("branch-target-load-optimize")
      |                                                   ^
cyberland.cpp:16:52: warning: bad option '-fbranch-target-load-optimize2' to pragma 'optimize' [-Wpragmas]
   16 | #pragma GCC optimize("branch-target-load-optimize2")
      |                                                    ^
cyberland.cpp:17:40: warning: bad option '-fbtr-bb-exclusive' to pragma 'optimize' [-Wpragmas]
   17 | #pragma GCC optimize("btr-bb-exclusive")
      |                                        ^
cyberland.cpp:71:24: warning: bad option '-fprofile-values' to attribute 'optimize' [-Wattributes]
   71 | void dfs(int v,int stop){
      |                        ^
cyberland.cpp:71:24: warning: bad option '-ffunction-sections' to attribute 'optimize' [-Wattributes]
cyberland.cpp:71:24: warning: bad option '-fdata-sections' to attribute 'optimize' [-Wattributes]
cyberland.cpp:71:24: warning: bad option '-fbranch-target-load-optimize' to attribute 'optimize' [-Wattributes]
cyberland.cpp:71:24: warning: bad option '-fbranch-target-load-optimize2' to attribute 'optimize' [-Wattributes]
cyberland.cpp:71:24: warning: bad option '-fbtr-bb-exclusive' to attribute 'optimize' [-Wattributes]
cyberland.cpp:79:95: warning: bad option '-fprofile-values' to attribute 'optimize' [-Wattributes]
   79 | double solve(int n,int m,int k,int h,vector<int> x,vector<int> y,vector<int> c,vector<int> arr){
      |                                                                                               ^
cyberland.cpp:79:95: warning: bad option '-ffunction-sections' to attribute 'optimize' [-Wattributes]
cyberland.cpp:79:95: warning: bad option '-fdata-sections' to attribute 'optimize' [-Wattributes]
cyberland.cpp:79:95: warning: bad option '-fbranch-target-load-optimize' to attribute 'optimize' [-Wattributes]
cyberland.cpp:79:95: warning: bad option '-fbranch-target-load-optimize2' to attribute 'optimize' [-Wattributes]
cyberland.cpp:79:95: warning: bad option '-fbtr-bb-exclusive' to attribute 'optimize' [-Wattributes]

• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 19 / 19
• Subtask 5: 7 / 7
• Subtask 6: 16 / 16
• Subtask 7: 29 / 29
• Subtask 8: 0 / 3