oj.uz

Submission #610805

# Submission time Handle Problem Language Result Execution time Memory
610805 2022-07-28T14:37:29 Z NicolaAbusaad2014 Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 706 ms 56408 KB 
/**
 * Prof.Nicola
**/
#include <bits/stdc++.h>

using namespace std;
#define endl "\n"
#define mp make_pair
#define F first
#define S second
#define REP(i,l,r) for(int i=(l);i<(r);i++)
#define PER(i,l,r) for(int i=(r)-1;i>=(l);i--)
#define bitl __builtin_clz
#define bitr __builtin_ctz
#define bits __builtin_popcount
const long dx[4]={1,0,-1,0},dz[4]={0,1,0,-1};
const long double pi=3.14159265359;
const long long mod=1e9+7;
long long p(long long x){while(x&(x-1)){x=x&(x-1);}return x;}
long long squared(long long x){return (x*x)%mod;}
long long power(long long x,long long p){if(p==0){return 1;}if(p%2==1){return (power(x,p-1)*x)%mod;}return squared(power(x,p/2));}
long long inv(long long x){return power(x,mod-2);}
long long log(long long x,long long z){if(x<z){return 0;}return 1+log(x/z,z);}
template<class T>void re(T&x){cin>>x;}
template<class T1,class T2> void re(pair<T1,T2>&x){re(x.first);re(x.second);}
template<class T>void re(vector<T>&x){for(long i=0;i<x.size();i++){re(x[i]);}}
template<class T>void re(deque<T>&x){for(long i=0;i<x.size();i++){re(x[i]);}}
template<class T>void out(T x){cout<<x<<" ";}
template<class T1,class T2>void out(pair<T1,T2>x){out(x.first);out(x.second);cout<<endl;}
template<class T>void out(vector<T>x,long l=0,long r=0){if(!r){r=x.size();}for(long i=l;i<r;i++){out(x[i]);}cout<<endl;}
template<class T>void out(deque<T>x,long l=0,long r=0){if(!r){r=x.size();}for(long i=l;i<r;i++){out(x[i]);}cout<<endl;}
template<class T>void out(set<T>x){while(!x.empty()){out(*x.begin());x.erase(*x.begin());}cout<<endl;}
template<class T1,class T2>void out(map<T1,T2>x){while(!x.empty()){out(*x.begin());x.erase(x.begin()->first);}cout<<endl;}
template<class T>void out(queue<T>x){while(!x.empty()){out(x.front());x.pop();}cout<<endl;}
template<class T>void out(priority_queue<T>x){while(!x.empty()){out(x.top());x.pop();}cout<<endl;}
template<class T>void out(stack<T>x){while(!x.empty()){out(x.top());x.pop();}cout<<endl;}
template<class T>T cross(complex<T>x,complex<T>z){return (conj(x)*z).imag();}
template<class T>T dot(complex<T>x,complex<T>z){return (conj(x)*z).real();}
set<long long>::iterator T;
long long vLE(long long x,vector<long long>&VT,long l=0,long r=-1){if(r==-1){r=VT.size()-1;}if(VT[l]>x){return -1;}long long z=p(r-l);while(z){if(l+z<=r&&VT[l+z]<=x){l+=z;}z/=2;}return l;}
long long vL(long long x,vector<long long>&VT,long l=0,long r=-1){if(r==-1){r=VT.size()-1;}if(VT[l]>=x){return -1;}long long z=p(r-l);while(z){if(l+z<=r&&VT[l+z]<x){l+=z;}z/=2;}return l;}
long long vGE(long long x,vector<long long>&VT,long l=0,long r=-1){if(r==-1){r=VT.size()-1;}if(VT[l]>=x){return l;}l=vL(x,VT,l,r);if(l==r){return -1;}return l+1;}
long long vG(long long x,vector<long long>&VT,long l=0,long r=-1){if(r==-1){r=VT.size()-1;}if(VT[l]>x){return l;}l=vLE(x,VT,l,r);if(l==r){return -1;}return l+1;}
long long sLE(long long x,set<long long>&ST){if(ST.count(x)){return x;}if(*ST.begin()>x){return -1;}ST.insert(x);T=ST.find(x);T--;ST.erase(x);return *T;}
long long sL(long long x,set<long long>&ST){if(*ST.begin()>=x){return -1;}if(ST.count(x)){T=ST.find(x);T--;return *T;}ST.insert(x);T=ST.find(x);T--;ST.erase(x);return *T;}
long long sGE(long long x,set<long long>&ST){if(ST.count(x)){return x;}if(*ST.rbegin()<x){return -1;}ST.insert(x);T=ST.find(x);T++;ST.erase(x);return *T;}
long long sG(long long x,set<long long>&ST){if(*ST.rbegin()<=x){return -1;}if(ST.count(x)){T=ST.find(x);T++;return *T;}ST.insert(x);T=ST.find(x);T++;ST.erase(x);return *T;}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n,m,s,cost,pos,jump,ans,inf=1e9;
    cin>>n>>m;
    s=sqrt(n)+1;
    vector<pair<int,int> >v(m);
    vector<bool>ok(n);
    re(v);
    vector<vector<int> >possible(n),cnt(n),l(n),r(n);
    vector<vector<bool> >vis(n);
    vector<int>path(n,inf);
    REP(i,0,m){
        if(v[i].S>s){
            for(int j=v[i].F%v[i].S;j<n;j+=v[i].S){
                cnt[j].push_back(v[i].S);
                if(j+v[i].S<n){
                    r[j].push_back(cnt[j+v[i].S].size());
                }
                else{
                    r[j].push_back(0);
                }
                if(j-v[i].S>=0){
                    l[j].push_back(cnt[j-v[i].S].size()-1);
                }
                else{
                    l[j].push_back(0);
                }
            }
            possible[v[i].F].push_back(cnt[v[i].F].size()+s);
            continue;
        }
        possible[v[i].F].push_back(v[i].S);
    }
    REP(i,0,n){
        vis[i].resize(s+1+cnt[i].size());
    }
    deque<pair<int,pair<int,int> > >pq;
    pq.push_back(mp(0,mp(v[0].F,possible[v[0].F][0])));
    while(!pq.empty()){
        cost=pq.front().F;
        pos=pq.front().S.F;
        jump=pq.front().S.S;
        pq.pop_front();
        if(vis[pos][jump]){
            continue;
        }
        vis[pos][jump]=true;
        if(ok[pos]){
            if(jump<=s){
                if(pos+jump<n){
                    pq.push_back(mp(cost+1,mp(pos+jump,jump)));
                }
                if(pos-jump>=0){
                    pq.push_back(mp(cost+1,mp(pos-jump,jump)));
                }
                continue;
            }
            if(pos+cnt[pos][jump-s-1]<n){
                pq.push_back(mp(cost+1,mp(pos+cnt[pos][jump-s-1],r[pos][jump-s-1]+s+1)));
            }
            if(pos-cnt[pos][jump-s-1]>=0){
                pq.push_back(mp(cost+1,mp(pos-cnt[pos][jump-s-1],l[pos][jump-s-1]+s+1)));
            }
            continue;
        }
        path[pos]=cost;
        if(jump<=s){
            if(pos+jump<n){
                pq.push_back(mp(cost+1,mp(pos+jump,jump)));
            }
            if(pos-jump>=0){
                pq.push_back(mp(cost+1,mp(pos-jump,jump)));
            }
        }
        else{
            if(pos+cnt[pos][jump-s-1]<n){
                pq.push_back(mp(cost+1,mp(pos+cnt[pos][jump-s-1],r[pos][jump-s-1]+s+1)));
            }
            if(pos-cnt[pos][jump-s-1]>=0){
                pq.push_back(mp(cost+1,mp(pos-cnt[pos][jump-s-1],l[pos][jump-s-1]+s+1)));
            }
        }
        ok[pos]=true;
        REP(i,0,possible[pos].size()){
            pq.push_front(mp(cost,mp(pos,possible[pos][i])));
        }
    }
    ans=path[v[1].F];
    if(ans==inf){
        cout<<-1<<endl;
        return 0;
    }
    cout<<ans<<endl;
    return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:11:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 | #define REP(i,l,r) for(int i=(l);i<(r);i++)
      |                                   ^
skyscraper.cpp:133:9: note: in expansion of macro 'REP'
  133 |         REP(i,0,possible[pos].size()){
      |         ^~~
skyscraper.cpp: In instantiation of 'void re(std::vector<_Tp>&) [with T = std::pair<int, int>]':
skyscraper.cpp:57:9:   required from here
skyscraper.cpp:26:53: warning: comparison of integer expressions of different signedness: 'long int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 | template<class T>void re(vector<T>&x){for(long i=0;i<x.size();i++){re(x[i]);}}
      |                                                    ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# 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 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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 260 KB Output is correct
2 Correct 1 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 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct

Subtask #3
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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 3 ms 724 KB Output is correct
18 Correct 2 ms 724 KB Output is correct
19 Correct 1 ms 724 KB Output is correct
20 Correct 1 ms 724 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 2 ms 724 KB Output is correct
24 Correct 3 ms 852 KB Output is correct
25 Correct 2 ms 852 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 792 KB Output is correct
28 Correct 3 ms 980 KB Output is correct
29 Correct 3 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 3 ms 980 KB Output is correct
33 Correct 8 ms 1616 KB Output is correct
34 Correct 7 ms 1492 KB Output is correct

Subtask #4
21.0 / 21.0

# 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 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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 1 ms 724 KB Output is correct
19 Correct 1 ms 724 KB Output is correct
20 Correct 1 ms 724 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 1 ms 724 KB Output is correct
24 Correct 2 ms 852 KB Output is correct
25 Correct 2 ms 852 KB Output is correct
26 Correct 2 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 3 ms 852 KB Output is correct
29 Correct 2 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 3 ms 980 KB Output is correct
33 Correct 9 ms 1492 KB Output is correct
34 Correct 7 ms 1620 KB Output is correct
35 Correct 13 ms 2576 KB Output is correct
36 Correct 3 ms 852 KB Output is correct
37 Correct 18 ms 4052 KB Output is correct
38 Correct 20 ms 3640 KB Output is correct
39 Correct 19 ms 3668 KB Output is correct
40 Correct 19 ms 3796 KB Output is correct
41 Correct 22 ms 3748 KB Output is correct
42 Correct 7 ms 1492 KB Output is correct
43 Correct 6 ms 1476 KB Output is correct
44 Correct 4 ms 1364 KB Output is correct
45 Correct 42 ms 8020 KB Output is correct
46 Correct 40 ms 8020 KB Output is correct

Subtask #5
43.0 / 43.0

# 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 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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 2 ms 596 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 1 ms 724 KB Output is correct
19 Correct 2 ms 724 KB Output is correct
20 Correct 1 ms 724 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 2 ms 724 KB Output is correct
24 Correct 3 ms 852 KB Output is correct
25 Correct 2 ms 852 KB Output is correct
26 Correct 2 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 3 ms 980 KB Output is correct
29 Correct 2 ms 596 KB Output is correct
30 Correct 1 ms 596 KB Output is correct
31 Correct 2 ms 596 KB Output is correct
32 Correct 5 ms 980 KB Output is correct
33 Correct 8 ms 1492 KB Output is correct
34 Correct 8 ms 1620 KB Output is correct
35 Correct 14 ms 2580 KB Output is correct
36 Correct 3 ms 852 KB Output is correct
37 Correct 19 ms 4052 KB Output is correct
38 Correct 20 ms 3664 KB Output is correct
39 Correct 19 ms 3740 KB Output is correct
40 Correct 20 ms 3796 KB Output is correct
41 Correct 19 ms 3768 KB Output is correct
42 Correct 5 ms 1492 KB Output is correct
43 Correct 6 ms 1364 KB Output is correct
44 Correct 5 ms 1364 KB Output is correct
45 Correct 44 ms 8020 KB Output is correct
46 Correct 57 ms 8052 KB Output is correct
47 Correct 97 ms 11648 KB Output is correct
48 Correct 28 ms 7724 KB Output is correct
49 Correct 25 ms 7904 KB Output is correct
50 Correct 21 ms 8020 KB Output is correct
51 Correct 98 ms 10268 KB Output is correct
52 Correct 70 ms 10312 KB Output is correct
53 Correct 27 ms 8036 KB Output is correct
54 Correct 5 ms 5332 KB Output is correct
55 Correct 6 ms 5332 KB Output is correct
56 Correct 11 ms 6484 KB Output is correct
57 Correct 22 ms 5460 KB Output is correct
58 Correct 9 ms 6100 KB Output is correct
59 Correct 12 ms 6100 KB Output is correct
60 Correct 19 ms 6980 KB Output is correct
61 Correct 18 ms 7304 KB Output is correct
62 Correct 102 ms 11604 KB Output is correct
63 Correct 641 ms 54248 KB Output is correct
64 Correct 638 ms 55960 KB Output is correct
65 Correct 706 ms 56324 KB Output is correct
66 Correct 666 ms 56408 KB Output is correct
67 Correct 688 ms 56320 KB Output is correct