Submission #582019

#	Time	Username	Problem	Language	Result	Execution time	Memory
582019		Koosha_mv	Simurgh (IOI17_simurgh)	C++14	30 / 100	171 ms	3412 KiB

simurgh

#include "simurgh.h"
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=505;

int n,m,mark[N],comp[N],cnt[N],pdge[N],prt[N],Max[N];
vector<int> edge,ans;
vector<pair<int,int>> g[N];

void dfs(int u,int col){
	comp[u]=col;
	for(auto [v,id] : g[u]){
		if(comp[v]) continue ;
		edge.pb(id);
		dfs(v,col);
	}
}
int ask(vector<int> &vec){
	return count_common_roads(vec);
}
vector<int> find_roads(int _n,vector<int> u,vector<int> v){
	vector<int> ans;
	n=_n,m=u.size();
	f(i,0,m) g[u[i]].pb({v[i],i}),g[v[i]].pb({u[i],i});
	queue<int> q;
	q.push(0);
	mark[0]=1;
	while(q.size()){
		edge.clear();
		int u=q.front();
		q.pop();
		f(i,0,n+1) comp[i]=Max[i]=prt[i]=0,cnt[i]=-1; comp[u]=1;
		int col=0;
		for(auto [v,id] : g[u]){
			if(comp[v]==0){
				col++;
				dfs(v,col);
				pdge[col]=id;
				edge.pb(id);
			}
		}
		int res=ask(edge);
		for(auto [v,id] : g[u]){
			if(pdge[comp[v]]==id){
				cnt[v]=res;
				maxm(Max[comp[v]],cnt[v]);
			}
		}
		for(auto [v,id] : g[u]){
			if(pdge[comp[v]]==id || (mark[v]==1 && prt[comp[v]]==2)) continue ;
			vector<int> vec;
			for(auto x : edge){
				if(x!=pdge[comp[v]])
				vec.pb(x);
			}
			vec.pb(id);
			cnt[v]=ask(vec);
			if(mark[v]) prt[comp[v]]=1;
			maxm(Max[comp[v]],cnt[v]);
		}
		for(auto [v,id] : g[u]){
			if(cnt[v]>0 && Max[comp[v]]==cnt[v] && mark[v]==0){
				mark[v]=1;
				q.push(v);
				ans.pb(id);
			}
		}
	}
	//dbgv(ans);
	return ans;
}

Compilation message (stderr)

simurgh.cpp: In function 'void dfs(int, int)':
simurgh.cpp:32:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   32 |  for(auto [v,id] : g[u]){
      |           ^
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:9:18: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    9 | #define f(i,a,b) for(int i=a;i<b;i++)
      |                  ^~~
simurgh.cpp:52:3: note: in expansion of macro 'f'
   52 |   f(i,0,n+1) comp[i]=Max[i]=prt[i]=0,cnt[i]=-1; comp[u]=1;
      |   ^
simurgh.cpp:52:49: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   52 |   f(i,0,n+1) comp[i]=Max[i]=prt[i]=0,cnt[i]=-1; comp[u]=1;
      |                                                 ^~~~
simurgh.cpp:54:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   54 |   for(auto [v,id] : g[u]){
      |            ^
simurgh.cpp:63:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   63 |   for(auto [v,id] : g[u]){
      |            ^
simurgh.cpp:69:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   69 |   for(auto [v,id] : g[u]){
      |            ^
simurgh.cpp:81:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   81 |   for(auto [v,id] : g[u]){
      |            ^

• Subtask 1: 13 / 13
• Subtask 2: 17 / 17
• Subtask 3: 0 / 21
• Subtask 4: 0 / 19
• Subtask 5: 0 / 30