Submission #750467

#	Time	Username	Problem	Language	Result	Execution time	Memory
750467		bgnbvnbv	Radio (COCI22_radio)	C++14	110 / 110	995 ms	151572 KiB

Main

#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<ll,ll>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=int;
const ll maxN=1e6+10;
const ll inf=1e18;
const ll mod=1e9+7;
vector<pli>vec[maxN];
set<int>s[maxN];
set<int>::iterator it;
ll n;
ll st[4*maxN];
void update(ll pos,ll val,ll id=1,ll l=1,ll r=n)
{
    if(l==r)
    {
        st[id]=val;
        return;
    }
    ll mid=l+r>>1;
    if(pos<=mid)update(pos,val,id*2,l,mid);
    else update(pos,val,id*2+1,mid+1,r);
    st[id]=min(st[id*2],st[id*2+1]);
}
ll get(ll i,ll j,ll id=1,ll l=1,ll r=n)
{
    if(j<l||r<i) return n+1;
    if(i<=l&&r<=j) return st[id];
    ll mid=l+r>>1;
    return min(get(i,j,id*2,l,mid),get(i,j,id*2+1,mid+1,r));
}
void add(ll x)
{
    for(auto &zz:vec[x])
    {
        ll v=zz.fi;
        it=s[v].lower_bound(x);
        if(it!=s[v].end())
        {
            zz.se=*it;
        }
        else zz.se=n+1;
        if(it!=s[v].begin())
        {
            it--;
            ll cc=*it;
            ll mn=n+1;
            for(auto &vv:vec[cc])
            {
                if(vv.fi==v) vv.se=min(vv.se,x);
                mn=min(mn,vv.se);
            }
            //cout << x<<' '<<cc<<' '<<mn<<'\n';
            update(cc,mn);
        }
        s[v].insert(x);
    }
    ll mn=n+1;
    for(auto &zz:vec[x]) mn=min(mn,zz.se);
    update(x,mn);
}
void ers(ll x)
{
    for(auto &zz:vec[x])
    {
        ll v=zz.fi;
        it=s[v].upper_bound(x);
        ll val=n+1;
        if(it!=s[v].end()) val=*it;
        it--;
        if(it!=s[v].begin())
        {
            it--;
            ll cc=*it;
            ll mn=n+1;
            for(auto &vv:vec[cc])
            {
                if(vv.fi==v) vv.se=val;
                mn=min(mn,vv.se);
            }
            update(cc,mn);
        }
        s[v].erase(x);
        zz.se=n+1;
    }
    ll mn=n+1;
    for(auto &zz:vec[x]) mn=min(mn,zz.se);
    update(x,n+1);
}
ll q;
ll p[maxN];
ll in[maxN];
void solve()
{
    cin >> n >> q;
    for(int i=1;i<=n;i++) p[i]=i;
    p[1]=0;
    for(int i=1;i<=n;i++) update(i,n+1),in[i]=0;
    for(int i=2;i<=n;i++)
    {
        if(p[i]==i)
        {
            for(int j=2*i;j<=n;j+=i)
            {
                p[j]=min(p[j],i);
            }
        }
    }
    for(int i=1;i<=n;i++)
    {
        ll x=i;
        while(x>1)
        {
            ll c=p[x];
            while(p[x]==c) x/=c;
            vec[i].pb({c,n+1});
        }
    }
    while(q--)
    {
        char t;
        cin >> t;
        if(t=='S')
        {
            ll x;
            cin >> x;
            if(in[x]==0)
            {
                in[x]=1;
                add(x);
            }
            else
            {
                in[x]=0;
                ers(x);
            }
        }
        else
        {
            ll l,r;
            cin >> l >> r;
            if(get(l,r)>r) cout << "NE\n";
            else cout <<"DA\n";
        }
    }
    //cout << get(1,6)<<'\n';
    //for(auto zz:vec[3]) cout << zz.se<<'\n';
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message (stderr)

Main.cpp:11:14: warning: overflow in conversion from 'double' to 'll' {aka 'int'} changes value from '1.0e+18' to '2147483647' [-Woverflow]
   11 | const ll inf=1e18;
      |              ^~~~
Main.cpp: In function 'void update(ll, ll, ll, ll, ll)':
Main.cpp:25:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |     ll mid=l+r>>1;
      |            ~^~
Main.cpp: In function 'll get(ll, ll, ll, ll, ll)':
Main.cpp:34:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   34 |     ll mid=l+r>>1;
      |            ~^~

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 70 / 70