oj.uz

Submission #1083881

# Submission time Handle Problem Language Result Execution time Memory
1083881 2024-09-04T12:12:27 Z tte0 Alternating Heights (CCO22_day1problem1) C++17
25 / 25
 615 ms 14004 KB 
/*
Author: Teoman Ata Korkmaz
*/
#pragma GCC optimize("O3,fast-math,unroll-loops,no-stack-protector")
#include <bits/stdc++.h> 
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define int ll
#define ff first
#define ss second
#define endl '\n'
#define spc ' '
#define pb push_back
#define e2(x) (1LL<<(x))
#define lg(x) (__lg(x))
#define gcd(x,y) __gcd(x,y)
#define lcm(x,y) ((x/gcd(x,y))*y)
#define smrt(i) (double(sqrt(8*(i)+1)-1)/2)
#define ssum(x) ((x)*((x)+1)/2)
#define isint(x) (ceil((x))==floor((x)))
#define no cout<<"NO"<<endl
#define yes cout<<"YES"<<endl
#define cendl cout<<endl
#define mset(x,y) memset(x,y,sizeof(x))
#define popcnt(x) __builtin_popcountll(x)
#define clz(x) __builtin_clz(x)
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define clock() uint64_t(chrono::high_resolution_clock::now().time_since_epoch().count())
#define compress(x) sort(all(x));x.resize(unique(all(x))-x.begin())
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);cerr.tie(NULL);cout<<fixed<<setprecision(0);cerr<<fixed<<setprecision(0)
#define fileio freopen("out.txt","w",stdout);freopen("in.txt","r",stdin)
#define usacoio(s) freopen((s + str(".in")).c_str(), "r", stdin);freopen((s + str(".out")).c_str(), "w", stdout)
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> 
using namespace std;
//using namespace __gnu_pbds;
typedef int_fast32_t i32;
typedef int_fast64_t ll;
typedef long double ldouble;
typedef string str;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef pair<ii,ii> iiii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<iii> viii;
typedef vector<vi> vvi;
typedef vector<vvi> vvvi;
typedef vector<pair<char,int>> vci;
typedef vector<str> vstr;
typedef map<int,int> mii;
typedef map<char,int> mci;
typedef map<str,int> msi;
typedef map<int,vi> miv;
typedef unordered_map<int,int> umii;
typedef unordered_map<char,int> umci;
typedef unordered_map<str,int> umsi;
typedef unordered_map<int,vi> umiv;
typedef set<int> sti;
typedef set<char> stc;
typedef set<str> sts;
typedef multiset<int> msti;
typedef multiset<char> mstc;
typedef multiset<str> msts;
inline int segsum(int start,int end,int step){
    if(end<start)return 0;
    return (((end-start)/step+1)*(start+end))>>1;
}
inline int fp(int b,int p,int mod=1e9+7){
    int ans=1;
    while(p){
        if(p&1)ans=(ans*b)%mod;
        p>>=1;
        b=(b*b)%mod;
    }
    return ans;
}
template<typename InputIterator,typename T = int>
T accumulate(InputIterator first,InputIterator last,T init = T{}) {
    for (; first != last; ++first) {
        init += *first;
    }
    return init;
}
template<typename T,typename T2>inline pair<T,T2> operator+(const pair<T,T2>&a,const pair<T,T2>& b){return {a.ff+b.ff,a.ss+b.ss};}
template<typename T,typename T2>inline pair<T,T2> operator-(const pair<T,T2>&a,const pair<T,T2>& b){return {a.ff-b.ff,a.ss-b.ss};}
template<typename T,typename T2>inline pair<T,T2> operator*(const pair<T,T2>&a,const pair<T,T2>& b){return {a.ff*b.ff,a.ss*b.ss};}
template<typename T,typename T2>inline pair<T,T2> operator/(const pair<T,T2>&a,const pair<T,T2>& b){return {a.ff/b.ff,a.ss/b.ss};}
template<typename T> inline void maxs(T& x,const T& y){return void(x=max(x,y));}
template<typename T> inline void mins(T& x,const T& y){return void(x=min(x,y));}
template<typename T> inline void gcds(T& x,const T& y){return void(x=gcd(x,y));}
template<typename T> inline void lcms(T& x,const T& y){return void(x=lcm(x,y));}
template<typename T,typename T2>inline ostream& operator<<(ostream& os, const pair<T,T2>& p){
    os<<"["<<p.ff<<","<<p.ss<<"]";
    return os;
}
template<typename T>inline ostream& operator<<(ostream& os,const vector<T>& a) {
    for(const T& _:a)os<<_<<' ';
    return os;
}
template<typename T>inline ostream& operator<<(ostream& os,const vector<vector<T>>& a) {
    for(const vector<T>& _:a)os<<_<<endl;
    return os;
}
template<typename T>inline ostream& operator<<(ostream& os,const set<T>& a) {
    for(const T& _:a)os<<_<<' ';
    return os;
}
template<typename T,typename T2>inline ostream& operator<<(ostream& os,const map<T,T2>& a) {
    for(const auto& _:a)os<<_<<' ';
    return os;
}
template<typename T,typename T2>inline ostream& operator<<(ostream& os,const unordered_map<T,T2>& a) {
    for(const auto& _:a)os<<_<<' ';
    return os;
}
template<typename T>inline ostream& operator<<(ostream& os,const queue<T>& b) {
    queue<T> a=b;
    while(a.size()){
        os<<a.front()<<" ";
        a.pop();
    }
    return os;
}
template<typename T>inline ostream& operator<<(ostream& os,const stack<T>& b) {
    stack<T> a=b;
    while(a.size()){
        os<<a.top()<<" ";
        a.pop();
    }
    return os;
}
template<typename T>inline ostream& operator<<(ostream& os,const priority_queue<T>& b) {
    priority_queue<T> a=b;
    while(a.size()){
        os<<a.top()<<" ";
        a.pop();
    }
    return os;
}
template<typename T>inline ostream& operator<<(ostream& os,const priority_queue<T,vector<T>,greater<T>>& b) {
    priority_queue<T,vector<T>,greater<T>> a=b;
    while(a.size()){
        os<<a.top()<<" ";
        a.pop();
    }
    return os;
}
template<typename T,typename T2>inline istream& operator>>(istream& is,pair<T,T2>& p){
    is>>(p.ff)>>(p.ss);
    return is;
}
template<typename T>inline istream& operator>>(istream& is,vector<T>& a) {
    for(T& _:a)is>>_;
    return is;
}
inline void print(){cout<<endl;}
template<typename... Args>
inline void print(const Args&... args){
    ((cout<<args<<' '),...)<<endl;
}
inline void input(){}
template<typename... Args>
inline void input(Args&... args){
    (cin>>...>>args);
}
#ifdef ONLINE_JUDGE
template<typename... Args>
inline void debug(const Args&... args){
    return void("59");
}
#else
inline void debug(){cerr<<endl;}
template<typename... Args>
inline void debug(const Args&... args){
    ((cerr<<args<<' '),...)<<endl;
}
#endif
inline void yn(bool b){
    if(b)yes;
    else no;
}
#define ASSERT(condition, message)\
if(condition){\
    cerr<<"Assertion failed: "<<message<<" at "<<__FILE__<<":"<<to_string(__LINE__)<<endl;\
    abort();\
}
///////////////////////////////////////////////////////////////////
constexpr int N=3e3+5;
constexpr int A=1e9+5;
constexpr int MOD=1e9+7;
constexpr i32 INF=INT32_MAX;
constexpr ll  INFL=INT64_MAX;
constexpr int BLOCK=320;
constexpr ldouble EPS=1e-9;
constexpr int MAXQUERY=100;
constexpr int dx[4]={-1,0,1,0};
constexpr int dy[4]={0,1,0,-1};
mt19937 mt(clock());
///////////////////////////////////////////////////////////////////
int n,m,k,t,q,a,b,x,y,w,ans;
vi v;

inline void subtask1(){
    vi a;
    for(int i=0;i<n-1;i++){
        if(v[i]==v[i+1])a.pb(i);
    }
    while(q--){
        input(x,y);
        x--;y--;
        auto it=lower_bound(all(a),x);
        if(it!=a.end() && *it<y)no;
        else yes;
    }
}
inline void subtask2(){

}
inline void subtask3(){
    while(q--){
        input(x,y);
        x--;y--;
        vi adj[k],vis(k,0);
        for(int i=x;i<y;i++){
            if((i-x)%2==0){
                adj[v[i]].pb(v[i+1]);
            }
            else{
                adj[v[i+1]].pb(v[i]);
            }
        }
        auto dfs=[&adj,&vis](auto&& dfs,int node){
            if(vis[node]==1)return false;
            if(vis[node]==2)return true;
            vis[node]++;
            for(auto i:adj[node])if(!dfs(dfs,i))return false;
            vis[node]++;
            return true;
        };
        bool flag=0;
        for(int i=x;i<=y;i++){
            if(!dfs(dfs,v[i])){
                flag=1;
                break;
            }
        }
        if(flag)no;
        else yes;
    }
}
inline void subtask4(){
    vi ans(n,-1),vis,adj[N];
    auto dfs=[&adj,&vis](auto&& dfs,int node){
        if(vis[node]==1)return false;
        if(vis[node]==2)return true;
        vis[node]++;
        for(auto i:adj[node])if(!dfs(dfs,i))return false;
        vis[node]++;
        return true;
    };
    auto f=[&](int x,int y){
        vis.assign(k,0);
        for(int i=0;i<k;i++)adj[i].clear();
        for(int i=x;i<y;i++){
            if((i-x)%2==0){
                adj[v[i]].pb(v[i+1]);
            }
            else{
                adj[v[i+1]].pb(v[i]);
            }
        }
        bool flag=0;
        for(int i=x;i<=y;i++){
            if(!dfs(dfs,v[i])){
                flag=1;
                break;
            }
        }
        return !flag;
    };
    for(int i=0;i<n;i++){
        int l=i,r=n-1;
        while(l<=r){
            int m=(l+r)>>1;
            if(f(i,m))l=m+1,ans[i]=m;
            else r=m-1;
        }
    }

    //debug("ans:",ans);
    while(q--){
        input(x,y);
        x--;y--;
        if(ans[x]<y)no;
        else yes;
    }
}
inline void solve(void){
    input(n,k,q);
    v.resize(n);
    input(v);
    for(auto& i:v)i--;

    subtask4();
}
signed main(void){
    int start=clock();
    fastio;
    //usacoio("59");
    int _testcase=1;
    //cin>>_testcase;
    while(_testcase--)solve();
    debug("Time elapsed:",(clock()-start)/uint64_t(1e6),"ms");
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 130 ms 12880 KB Output is correct
2 Correct 129 ms 12880 KB Output is correct
3 Correct 132 ms 12880 KB Output is correct
4 Correct 93 ms 7280 KB Output is correct
5 Correct 109 ms 9320 KB Output is correct
6 Correct 133 ms 12880 KB Output is correct
7 Correct 142 ms 12756 KB Output is correct
8 Correct 155 ms 12892 KB Output is correct
9 Correct 146 ms 12904 KB Output is correct
10 Correct 203 ms 13428 KB Output is correct
11 Correct 361 ms 13908 KB Output is correct
12 Correct 307 ms 13140 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 123 ms 11088 KB Output is correct
2 Correct 123 ms 11096 KB Output is correct
3 Correct 109 ms 11168 KB Output is correct
4 Correct 96 ms 8272 KB Output is correct
5 Correct 115 ms 9468 KB Output is correct
6 Correct 112 ms 11188 KB Output is correct
7 Correct 126 ms 11052 KB Output is correct
8 Correct 124 ms 11092 KB Output is correct
9 Correct 121 ms 11348 KB Output is correct
10 Correct 116 ms 12112 KB Output is correct
11 Correct 121 ms 12112 KB Output is correct
12 Correct 0 ms 344 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 177 ms 672 KB Output is correct
3 Correct 190 ms 600 KB Output is correct
4 Correct 10 ms 600 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 129 ms 656 KB Output is correct
8 Correct 276 ms 600 KB Output is correct
9 Correct 342 ms 604 KB Output is correct
10 Correct 451 ms 732 KB Output is correct
11 Correct 477 ms 680 KB Output is correct
12 Correct 407 ms 668 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 130 ms 12880 KB Output is correct
2 Correct 129 ms 12880 KB Output is correct
3 Correct 132 ms 12880 KB Output is correct
4 Correct 93 ms 7280 KB Output is correct
5 Correct 109 ms 9320 KB Output is correct
6 Correct 133 ms 12880 KB Output is correct
7 Correct 142 ms 12756 KB Output is correct
8 Correct 155 ms 12892 KB Output is correct
9 Correct 146 ms 12904 KB Output is correct
10 Correct 203 ms 13428 KB Output is correct
11 Correct 361 ms 13908 KB Output is correct
12 Correct 307 ms 13140 KB Output is correct
13 Correct 123 ms 11088 KB Output is correct
14 Correct 123 ms 11096 KB Output is correct
15 Correct 109 ms 11168 KB Output is correct
16 Correct 96 ms 8272 KB Output is correct
17 Correct 115 ms 9468 KB Output is correct
18 Correct 112 ms 11188 KB Output is correct
19 Correct 126 ms 11052 KB Output is correct
20 Correct 124 ms 11092 KB Output is correct
21 Correct 121 ms 11348 KB Output is correct
22 Correct 116 ms 12112 KB Output is correct
23 Correct 121 ms 12112 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 177 ms 672 KB Output is correct
27 Correct 190 ms 600 KB Output is correct
28 Correct 10 ms 600 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 129 ms 656 KB Output is correct
32 Correct 276 ms 600 KB Output is correct
33 Correct 342 ms 604 KB Output is correct
34 Correct 451 ms 732 KB Output is correct
35 Correct 477 ms 680 KB Output is correct
36 Correct 407 ms 668 KB Output is correct
37 Correct 352 ms 13656 KB Output is correct
38 Correct 286 ms 13468 KB Output is correct
39 Correct 162 ms 12956 KB Output is correct
40 Correct 93 ms 8272 KB Output is correct
41 Correct 124 ms 9772 KB Output is correct
42 Correct 308 ms 13392 KB Output is correct
43 Correct 425 ms 13648 KB Output is correct
44 Correct 263 ms 13400 KB Output is correct
45 Correct 581 ms 14004 KB Output is correct
46 Correct 615 ms 13996 KB Output is correct
47 Correct 599 ms 14000 KB Output is correct