oj.uz

Submission #603610

# Submission time Handle Problem Language Result Execution time Memory
603610 2022-07-24T08:53:04 Z rrrr10000 Comparing Plants (IOI20_plants) C++14
100 / 100
 2356 ms 243288 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef tuple<ll,ll,ll> PP;
typedef vector<ll> vi;
typedef vector<vi> vvi;
typedef vector<P> vp;
typedef vector<bool> vb;
typedef vector<vb> vvb;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define REP(i,k,n) for(ll i=(ll)(k);i<(ll)(n);i++)
#define pb emplace_back
#define fi first
#define se second
template<class T> void out(T a){cout<<a<<endl;}
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<endl;}
const ll inf=1001001001001001001;
struct segtree{
    vp seg;vi lazy;
    ll n=1;
    segtree(vp v){
        while(n<v.size())n*=2;
        seg=vp(n*2,P(2*inf,0));lazy=vi(n*2);
        rep(i,v.size())seg[i+n]=v[i];
        for(ll i=n-1;i>0;i--)seg[i]=min(seg[i*2],seg[i*2+1]);
    }
    void eval(ll k,ll l,ll r){
        seg[k].fi+=lazy[k];
        if(r-l>1)rep(j,2)lazy[k*2+j]+=lazy[k];
        lazy[k]=0;
    }
    P get(ll a,ll b,ll k=1,ll l=0,ll r=-1){
        if(r==-1)r=n;
        eval(k,l,r);
        if(r<=a||b<=l)return P(2*inf,0);
        if(a<=l&&r<=b)return seg[k];
        return min(get(a,b,k*2,l,(l+r)/2),get(a,b,k*2+1,(l+r)/2,r));
    }
    void add(ll x,ll a,ll b,ll k=1,ll l=0,ll r=-1){
        if(r==-1)r=n;
        eval(k,l,r);
        if(r<=a||b<=l)return;
        if(a<=l&&r<=b){
            lazy[k]+=x;eval(k,l,r);return;
        }
        add(x,a,b,k*2,l,(l+r)/2);
        add(x,a,b,k*2+1,(l+r)/2,r);
        seg[k]=min(seg[k*2],seg[k*2+1]);
    }
};
vi num,al,rv;
vvi ma,mi;
void init(int k,vector<int> v){
    ll n=v.size();
    vp tmp1(n),tmp2(n);
    rep(i,n)tmp1[i]=P(v[i],i);
    rep(i,n)tmp2[i]=P(inf,i);
    segtree seg1(tmp1),seg2(tmp2);
    auto dif=[&](ll x){
        return (x%n+n)%n;
    };
    ll cnt=0;
    num=vi(n);
    while(true){
        while(true){
            auto tmp=seg1.get(0,n);
            if(tmp.fi>0)break;
            ll i=tmp.se;
            seg1.add(inf,i,i+1);
            seg2.add(-inf,i,i+1);
            if(i+k<=n)seg2.add(1,i+1,i+k);
            else{
                seg2.add(1,i+1,n);
                seg2.add(1,0,i+k-n);
            }
        }
        auto tmp=seg2.get(0,n);
        if(tmp.fi>0)break;
        ll i=tmp.se;
        seg2.add(inf,i,i+1);
        num[i]=cnt++;
        if(i-k+1>=0)seg1.add(-1,i-k+1,i);
        else{
            seg1.add(-1,0,i);
            seg1.add(-1,i-k+1+n,n);
        }
        if(i+k<=n)seg2.add(-1,i+1,i+k);
        else{
            seg2.add(-1,i+1,n);
            seg2.add(-1,0,i+k-n);
        }
    }
    al=vi(n*3);
    rep(i,n)al[num[i]*3]=i;
    rep(i,n)al[num[i]*3+2]=i+n;
    rep(i,n)al[num[i]*3+1]=i+n*2;
    rv=vi(n*3);
    rep(i,n*3)rv[al[i]]=i;
    ma=vvi(20,vi(n*3,-1));
    mi=vvi(20,vi(n*3,-1));
    rep(i,n*3)ma[0][i]=mi[0][i]=i;
    {
        set<ll> S;
        for(int i=n*3-1;i>=0;i--){
            if(i+k<n*3)S.erase(rv[i+k]);
            auto itr=S.lower_bound(rv[i]);
            if(itr!=S.end())ma[0][rv[i]]=*itr;
            S.insert(rv[i]);
        }
    }
    {
        set<ll> S;
        rep(i,n*3){
            if(i-k>=0)S.erase(rv[i-k]);
            auto itr=S.lower_bound(rv[i]);
            if(itr!=S.end())mi[0][rv[i]]=*itr;
            S.insert(rv[i]);
        }
    }
    // outv(ma[0]);outv(mi[0]);
    rep(j,19)rep(i,n*3)ma[j+1][i]=ma[j][ma[j][i]];
    rep(j,19)rep(i,n*3)mi[j+1][i]=mi[j][mi[j][i]];
    // outv(num);
    // outv(al);
}
int compare_plants(int x,int y){
    int f=-1;
    if(num[x]<num[y]){
        swap(x,y);
        f=1;
    }
    ll i=rv[y+num.size()],j=rv[x+num.size()];
    // cout<<x<<' '<<y<<' '<<i<<' '<<j<<endl;
    {
        ll cur=i;
        for(ll t=19;t>=0;t--)if(ma[t][cur]<=j)cur=ma[t][cur];
        ll tmp=x+num.size();
        if(x<y)tmp+=num.size();
        if(al[cur]>=tmp)return f;
    }
    {
        ll cur=i;
        for(ll t=19;t>=0;t--)if(mi[t][cur]<=j)cur=mi[t][cur];
        ll tmp=x+num.size();
        if(x>y)tmp-=num.size();
        if(al[cur]<=tmp)return f;
    }
    return 0;
}

Compilation message

plants.cpp: In constructor 'segtree::segtree(vp)':
plants.cpp:24:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |         while(n<v.size())n*=2;
      |               ~^~~~~~~~~
plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:61:10: warning: variable 'dif' set but not used [-Wunused-but-set-variable]
   61 |     auto dif=[&](ll x){
      |          ^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 58 ms 3028 KB Output is correct
7 Correct 432 ms 26956 KB Output is correct
8 Correct 1203 ms 241580 KB Output is correct
9 Correct 1198 ms 241572 KB Output is correct
10 Correct 1131 ms 241524 KB Output is correct
11 Correct 1158 ms 241580 KB Output is correct
12 Correct 1097 ms 241540 KB Output is correct
13 Correct 959 ms 241576 KB Output is correct
14 Correct 1330 ms 241612 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 1492 KB Output is correct
7 Correct 87 ms 8680 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 6 ms 1492 KB Output is correct
10 Correct 91 ms 8696 KB Output is correct
11 Correct 102 ms 8692 KB Output is correct
12 Correct 134 ms 8692 KB Output is correct
13 Correct 88 ms 8784 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 7 ms 1492 KB Output is correct
7 Correct 87 ms 8680 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 6 ms 1492 KB Output is correct
10 Correct 91 ms 8696 KB Output is correct
11 Correct 102 ms 8692 KB Output is correct
12 Correct 134 ms 8692 KB Output is correct
13 Correct 88 ms 8784 KB Output is correct
14 Correct 228 ms 26968 KB Output is correct
15 Correct 2356 ms 239756 KB Output is correct
16 Correct 230 ms 26972 KB Output is correct
17 Correct 2297 ms 239772 KB Output is correct
18 Correct 1551 ms 238708 KB Output is correct
19 Correct 1732 ms 238548 KB Output is correct
20 Correct 2124 ms 243288 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 109 ms 5360 KB Output is correct
4 Correct 1210 ms 238660 KB Output is correct
5 Correct 1277 ms 238672 KB Output is correct
6 Correct 1460 ms 238660 KB Output is correct
7 Correct 1782 ms 238616 KB Output is correct
8 Correct 2175 ms 238724 KB Output is correct
9 Correct 1127 ms 238604 KB Output is correct
10 Correct 1190 ms 238660 KB Output is correct
11 Correct 934 ms 238748 KB Output is correct
12 Correct 1428 ms 238656 KB Output is correct
13 Correct 1517 ms 238748 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 18 ms 1332 KB Output is correct
8 Correct 15 ms 1416 KB Output is correct
9 Correct 16 ms 1364 KB Output is correct
10 Correct 20 ms 1364 KB Output is correct
11 Correct 17 ms 1340 KB Output is correct
12 Correct 16 ms 1332 KB Output is correct
13 Correct 19 ms 1336 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 5 ms 1368 KB Output is correct
6 Correct 1292 ms 240832 KB Output is correct
7 Correct 1442 ms 241080 KB Output is correct
8 Correct 1662 ms 241232 KB Output is correct
9 Correct 1987 ms 241420 KB Output is correct
10 Correct 1347 ms 240888 KB Output is correct
11 Correct 1571 ms 241428 KB Output is correct
12 Correct 1059 ms 240712 KB Output is correct
13 Correct 1252 ms 240880 KB Output is correct
14 Correct 1422 ms 241056 KB Output is correct
15 Correct 1703 ms 241268 KB Output is correct
16 Correct 1020 ms 240816 KB Output is correct
17 Correct 1340 ms 240920 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 58 ms 3028 KB Output is correct
7 Correct 432 ms 26956 KB Output is correct
8 Correct 1203 ms 241580 KB Output is correct
9 Correct 1198 ms 241572 KB Output is correct
10 Correct 1131 ms 241524 KB Output is correct
11 Correct 1158 ms 241580 KB Output is correct
12 Correct 1097 ms 241540 KB Output is correct
13 Correct 959 ms 241576 KB Output is correct
14 Correct 1330 ms 241612 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 7 ms 1492 KB Output is correct
21 Correct 87 ms 8680 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 6 ms 1492 KB Output is correct
24 Correct 91 ms 8696 KB Output is correct
25 Correct 102 ms 8692 KB Output is correct
26 Correct 134 ms 8692 KB Output is correct
27 Correct 88 ms 8784 KB Output is correct
28 Correct 228 ms 26968 KB Output is correct
29 Correct 2356 ms 239756 KB Output is correct
30 Correct 230 ms 26972 KB Output is correct
31 Correct 2297 ms 239772 KB Output is correct
32 Correct 1551 ms 238708 KB Output is correct
33 Correct 1732 ms 238548 KB Output is correct
34 Correct 2124 ms 243288 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 109 ms 5360 KB Output is correct
38 Correct 1210 ms 238660 KB Output is correct
39 Correct 1277 ms 238672 KB Output is correct
40 Correct 1460 ms 238660 KB Output is correct
41 Correct 1782 ms 238616 KB Output is correct
42 Correct 2175 ms 238724 KB Output is correct
43 Correct 1127 ms 238604 KB Output is correct
44 Correct 1190 ms 238660 KB Output is correct
45 Correct 934 ms 238748 KB Output is correct
46 Correct 1428 ms 238656 KB Output is correct
47 Correct 1517 ms 238748 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 304 KB Output is correct
53 Correct 2 ms 468 KB Output is correct
54 Correct 18 ms 1332 KB Output is correct
55 Correct 15 ms 1416 KB Output is correct
56 Correct 16 ms 1364 KB Output is correct
57 Correct 20 ms 1364 KB Output is correct
58 Correct 17 ms 1340 KB Output is correct
59 Correct 16 ms 1332 KB Output is correct
60 Correct 19 ms 1336 KB Output is correct
61 Correct 116 ms 6996 KB Output is correct
62 Correct 316 ms 29016 KB Output is correct
63 Correct 1440 ms 241656 KB Output is correct
64 Correct 1297 ms 241740 KB Output is correct
65 Correct 1500 ms 241900 KB Output is correct
66 Correct 1699 ms 242140 KB Output is correct
67 Correct 2064 ms 242332 KB Output is correct
68 Correct 1403 ms 241640 KB Output is correct
69 Correct 1618 ms 242376 KB Output is correct
70 Correct 1209 ms 241532 KB Output is correct
71 Correct 1294 ms 241748 KB Output is correct
72 Correct 1484 ms 241996 KB Output is correct
73 Correct 1696 ms 242096 KB Output is correct
74 Correct 1364 ms 241736 KB Output is correct
75 Correct 1356 ms 241888 KB Output is correct