Submission #545654

#	Time	Username	Problem	Language	Result	Execution time	Memory
545654		leaked	Nice sequence (IZhO18_sequence)	C++14	100 / 100	1346 ms	72044 KiB

sequence

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
//#pragma GCC opimize(-O3)
//#pragma GCC opimize(Ofast)
//#pragma GCC opimize(unroll-loops)
//#pragma GCC target("avx,avx2,popcnt,sse,sse2,sse3,sse4,abm,tune=native")
#define m_p make_pair
#define vec vector
#define all(x) x.begin(),x.end()
#define pb push_back
#define sz(x) (int)x.size()
#define pw(x) (1LL<<x)
#define f first
#define s second
 
using namespace std;
using namespace __gnu_pbds;
typedef long double ld;
typedef pair<int,int> pii;
const int N=4e5+1;
int ok=1;
int used[N];
vec<int>g[N];
int pref[N];
vec<int>ord;
void dfs(int v){
    used[v]=1;
    for(auto &z : g[v]){
        if(used[z]==1){
            ok=0;
        }
        else if(!used[z]){
            dfs(z);
        }
    }
    used[v]=2;
}
void dfs1(int v){
    used[v]=1;
    for(auto &z : g[v]){
        if(!used[z]){
            dfs1(z);
        }
    }
    ord.pb(v);
}
int getlen(int n,int m){
    return n+m-__gcd(n,m)-1;
}
signed main()
{
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int q=10;
    scanf("%d",&q);
//    cin>>q;
//    ofstream cout("out.txt");
    while(q--){
        int n,m;
//        n=199999;m=200000;
        ord.clear();
        scanf("%d%d",&n,&m);
        int wow=getlen(n,m);
        auto check=[&](int mid){
            for(int i=0;i<=mid;i++) g[i].clear(),used[i]=0;
            for(int i=0;i<=mid;i++){
                if(i>=n){
                    g[i-n].pb(i);
                }
                if(i>=m){
                    g[i].pb(i-m);
                }
            }
            ok=1;
            for(int i=0;i<=mid;i++){
                if(!used[i]){
                    dfs(i);
                }
            }
            return ok;
        };
        int l=getlen(n,m)+1,r=l;
        while(l!=r){
            int tm=(l+r)>>1;
            if(check(tm)){
                l=tm+1;
            }
            else{
                r=tm;
            }
        }
        l--;
        assert(l==wow);
        for(int i=0;i<=l;i++) g[i].clear(),used[i]=0;
        for(int i=0;i<=l;i++){
            if(i>=n){
                g[i-n].pb(i);
            }
            if(i>=m){
                g[i].pb(i-m);
            }
        }
        for(int i=0;i<=l;i++){
            if(!used[i]){
                dfs1(i);
            }
        }
//        reverse(all(ord));
        int i=1;
        for(auto &z : ord) pref[z]=i++;
//        cout<<l<<'\n';
        printf("%d%c",l,'\n');
//        cout<<l<<'\n';
        for(int i=1;i<=l;i++){
//            cout<<pref[i]-pref[i-1]<<' ';
            printf("%d%c",pref[i]-pref[i-1],' ');
        }
 
         printf("%c",'\n');
//        cout<<'\n';
    }
    return 0;
}
/*
5 1
1 1 2
1 3 5
3 2 3 1
2 1
3 0 3 1
 
*/

Compilation message (stderr)

sequence.cpp: In function 'int main()':
sequence.cpp:55:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
sequence.cpp:62:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |         scanf("%d%d",&n,&m);
      |         ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 9 / 9
• Subtask 3: 14 / 14
• Subtask 4: 15 / 15
• Subtask 5: 14 / 14
• Subtask 6: 18 / 18
• Subtask 7: 24 / 24