Submission #723421

#	Time	Username	Problem	Language	Result	Execution time	Memory
723421		LittleFlowers__	Rarest Insects (IOI22_insects)	C++17	25 / 100	391 ms	316 KiB

insects

#include<bits/stdc++.h>
#include "insects.h"
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
int hmt() {int x=0;int c=getchar(),n=0;for(;!isdigit(c);c=getchar()) n=(c=='-');for(;isdigit(c);c=getchar()) x=x*10+c-'0';if(n) x=-x;return x;}
#define in hmt()
#define ins ({string x;char c=getchar();for(;c==' '||c=='\n';c=getchar());for(;c!=' '&&c!='\n';c=getchar()) x+=c;x;})
#define forinc(i,a,b) for(int i=a,_b=b;i<=_b;++i)
#define fordec(i,a,b) for(int i=a;i>=b;--i)
#define forb(i,BS) for(int i=BS._Find_first();i< BS.size();i = BS._Find_next(i))
#define timer 1.0*clock()/CLOCKS_PER_SEC
#define forv(a,b) for(auto &a:b)
#define pb push_back
#define pii pair<int,int>
#define fi first
#define se second
#define all(a) a.begin(),a.end()
#define reset(f,x) memset(f,x,sizeof(f))
#define bit(x,i) ((x>>(i-1))&1)
#define onbit(x,i) (x|(1<<(i-1)))
#define offbit(x,i) (x&~(1<<(i-1)))
int n,dd[2010];
vector<int> a,b;
/*void move_inside(int i) {cout<<"i "<<i<<endl;}
void move_outside(int i) {cout<<"o "<<i<<endl;}
int press_button() {cout<<"g\n";int x;cin>>x;return x;}*/

int min_cardinality(int N) {
    n=N;
    forinc(i,0,n-1) a.pb(i);
    random_shuffle(all(a));
    int ma=n;
    while(1) {
        reset(dd,0);
        int sz=a.size();
        int i=a[rand()%sz];
        move_inside(i);
        dd[i]=1;
        int mx=1;

        forv(j,a) if(!dd[j]) {
            move_inside(j);
            if(press_button()>mx) {
                ++mx;
                dd[j]=1;
            } else move_outside(j);
        }

        if(mx==sz||mx==1) return mx;

        forv(j,a) if(dd[j]) move_outside(j);

        random_shuffle(all(a));
        mx=min(mx,ma);
        forv(j,a) if(!dd[j]) {
            move_inside(j);
            int press=press_button();
            if(press>mx) {
                move_outside(j);
            } else {
                b.pb(j);
                ma=press;
            }
        }
        int szb=b.size();
        if(szb%ma) --ma;

        swap(a,b);
        b.clear();
        forv(j,a) move_outside(j);
        //cout<<"sz"<<" "<<a.size()<<endl;
    }
}
/*int main() {
    cout<<min_cardinality(5);
}*/

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 0 / 75