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Submission #780536

# Submission time Handle Problem Language Result Execution time Memory
780536 2023-07-12T09:58:27 Z mrwang Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 81 ms 6004 KB 
#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=3e4+100;
const ll inf=1e9+7;
const ll mod=1e9+7;
ll n;
ll dis[maxN];
priority_queue<pli,vector<pli>,greater<pli>>pq;
vector<ll>lon[maxN];
vector<pli>be[maxN];
ll p[maxN],b[maxN];
const ll block=175;
vector<ll>vec[block+2][block+2];
ll m;
void dij(ll s)
{
    for(int i=0;i<n;i++) dis[i]=inf;
    dis[s]=0;
    pq.push({dis[s],s});
    while(!pq.empty())
    {
        ll u=pq.top().se;
        ll d=pq.top().fi;
        pq.pop();
        if(d>dis[u]) continue;
        if(u==b[2])
        {
            break;
        }
        for(auto i:lon[u])
        {
            for(int j=u-p[i];j>=0;j-=p[i])
            {
                if(dis[j]>dis[u]+(u-j)/p[i])
                {
                    dis[j]=dis[u]+(u-j)/p[i];
                    pq.push({dis[j],j});
                }
            }
            for(int j=u+p[i];j<n;j+=p[i])
            {
                if(dis[j]>dis[u]+(j-u)/p[i])
                {
                    dis[j]=dis[u]+(j-u)/p[i];
                    pq.push({dis[j],j});
                }
            }
        }
        for(auto cc:be[u])
        {
            ll i=cc.fi;
            ll j=u%i;
            ll k=cc.se;
            ll pos=vec[i][j][k];
            ll pos2=k>0?vec[i][j][k-1]:0;
            for(int q=pos-i;q>=pos2;q-=i)
            {
                if(dis[q]>dis[pos]+(pos-q)/i)
                {
                    dis[q]=dis[pos]+(pos-q)/i;
                    pq.push({dis[q],q});
                }
            }
            pos2=(k+1<vec[i][j].size())?vec[i][j][k+1]:n-1;
            for(int q=pos+i;q<=pos2;q+=i)
            {
                if(dis[q]>dis[pos]+(q-pos)/i)
                {
                    dis[q]=dis[pos]+(q-pos)/i;
                    pq.push({dis[q],q});
                }
            }
        }
    }
}

void solve()
{
    cin >> n >> m;
    for(int i=1;i<=m;i++)
    {
        cin >> b[i] >> p[i];
    }
    for(int i=1;i<=m;i++)
    {
        if(p[i]>block)
        {
            lon[b[i]].pb(i);
        }
        else
        {
            vec[p[i]][b[i]%p[i]].pb(b[i]);
        }
    }
    for(int i=1;i<=block;i++)
    {
        for(int j=0;j<i;j++)
        {
            sort(vec[i][j].begin(),vec[i][j].end());
            for(int k=0;k<vec[i][j].size();k++)
            {
                be[vec[i][j][k]].pb({i,k});
            }
        }
    }
    dij(b[1]);
    if(dis[b[2]]==inf) cout << -1<<'\n';
    else cout << dis[b[2]];
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message

skyscraper.cpp: In function 'void dij(ll)':
skyscraper.cpp:71:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |             pos2=(k+1<vec[i][j].size())?vec[i][j][k+1]:n-1;
      |                   ~~~^~~~~~~~~~~~~~~~~
skyscraper.cpp: In function 'void solve()':
skyscraper.cpp:107:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |             for(int k=0;k<vec[i][j].size();k++)
      |                         ~^~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2388 KB Output is correct
2 Correct 2 ms 2388 KB Output is correct
3 Correct 1 ms 2388 KB Output is correct
4 Correct 1 ms 2388 KB Output is correct
5 Correct 1 ms 2388 KB Output is correct
6 Correct 1 ms 2388 KB Output is correct
7 Correct 1 ms 2388 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2388 KB Output is correct
2 Correct 1 ms 2388 KB Output is correct
3 Correct 1 ms 2388 KB Output is correct
4 Correct 1 ms 2388 KB Output is correct
5 Correct 1 ms 2388 KB Output is correct
6 Correct 1 ms 2388 KB Output is correct
7 Correct 1 ms 2388 KB Output is correct
8 Correct 1 ms 2388 KB Output is correct
9 Correct 1 ms 2388 KB Output is correct
10 Correct 1 ms 2388 KB Output is correct
11 Correct 2 ms 2516 KB Output is correct
12 Correct 1 ms 2516 KB Output is correct
13 Correct 2 ms 2516 KB Output is correct
14 Correct 2 ms 2516 KB Output is correct
15 Correct 2 ms 2516 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2388 KB Output is correct
2 Correct 1 ms 2388 KB Output is correct
3 Correct 1 ms 2388 KB Output is correct
4 Correct 1 ms 2388 KB Output is correct
5 Correct 1 ms 2388 KB Output is correct
6 Correct 1 ms 2388 KB Output is correct
7 Correct 1 ms 2388 KB Output is correct
8 Correct 1 ms 2388 KB Output is correct
9 Correct 1 ms 2388 KB Output is correct
10 Correct 2 ms 2432 KB Output is correct
11 Correct 2 ms 2516 KB Output is correct
12 Correct 1 ms 2516 KB Output is correct
13 Correct 1 ms 2516 KB Output is correct
14 Correct 2 ms 2516 KB Output is correct
15 Correct 2 ms 2516 KB Output is correct
16 Correct 1 ms 2516 KB Output is correct
17 Correct 2 ms 2492 KB Output is correct
18 Correct 2 ms 2436 KB Output is correct
19 Correct 2 ms 2516 KB Output is correct
20 Correct 2 ms 2516 KB Output is correct
21 Correct 2 ms 2488 KB Output is correct
22 Correct 2 ms 2516 KB Output is correct
23 Correct 2 ms 2516 KB Output is correct
24 Correct 2 ms 2516 KB Output is correct
25 Correct 2 ms 2516 KB Output is correct
26 Correct 2 ms 2516 KB Output is correct
27 Correct 2 ms 2516 KB Output is correct
28 Correct 2 ms 2496 KB Output is correct
29 Correct 3 ms 2772 KB Output is correct
30 Correct 2 ms 2608 KB Output is correct
31 Correct 3 ms 2664 KB Output is correct
32 Correct 2 ms 2516 KB Output is correct
33 Correct 4 ms 2900 KB Output is correct
34 Correct 3 ms 2900 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2388 KB Output is correct
2 Correct 1 ms 2388 KB Output is correct
3 Correct 1 ms 2388 KB Output is correct
4 Correct 1 ms 2388 KB Output is correct
5 Correct 2 ms 2388 KB Output is correct
6 Correct 1 ms 2388 KB Output is correct
7 Correct 2 ms 2388 KB Output is correct
8 Correct 1 ms 2388 KB Output is correct
9 Correct 1 ms 2388 KB Output is correct
10 Correct 1 ms 2388 KB Output is correct
11 Correct 2 ms 2516 KB Output is correct
12 Correct 1 ms 2516 KB Output is correct
13 Correct 1 ms 2516 KB Output is correct
14 Correct 2 ms 2516 KB Output is correct
15 Correct 2 ms 2516 KB Output is correct
16 Correct 1 ms 2516 KB Output is correct
17 Correct 2 ms 2516 KB Output is correct
18 Correct 2 ms 2516 KB Output is correct
19 Correct 1 ms 2488 KB Output is correct
20 Correct 2 ms 2516 KB Output is correct
21 Correct 2 ms 2516 KB Output is correct
22 Correct 1 ms 2516 KB Output is correct
23 Correct 2 ms 2496 KB Output is correct
24 Correct 3 ms 2516 KB Output is correct
25 Correct 2 ms 2516 KB Output is correct
26 Correct 2 ms 2492 KB Output is correct
27 Correct 2 ms 2516 KB Output is correct
28 Correct 2 ms 2516 KB Output is correct
29 Correct 3 ms 2772 KB Output is correct
30 Correct 2 ms 2516 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 2 ms 2516 KB Output is correct
33 Correct 4 ms 2900 KB Output is correct
34 Correct 4 ms 2900 KB Output is correct
35 Correct 6 ms 3156 KB Output is correct
36 Correct 2 ms 2624 KB Output is correct
37 Correct 5 ms 3128 KB Output is correct
38 Correct 6 ms 3388 KB Output is correct
39 Correct 5 ms 3284 KB Output is correct
40 Correct 6 ms 3288 KB Output is correct
41 Correct 6 ms 3360 KB Output is correct
42 Correct 5 ms 3412 KB Output is correct
43 Correct 5 ms 3356 KB Output is correct
44 Correct 6 ms 3456 KB Output is correct
45 Correct 9 ms 3844 KB Output is correct
46 Correct 9 ms 3832 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2400 KB Output is correct
2 Correct 1 ms 2388 KB Output is correct
3 Correct 2 ms 2388 KB Output is correct
4 Correct 1 ms 2388 KB Output is correct
5 Correct 1 ms 2388 KB Output is correct
6 Correct 2 ms 2388 KB Output is correct
7 Correct 1 ms 2388 KB Output is correct
8 Correct 1 ms 2388 KB Output is correct
9 Correct 1 ms 2388 KB Output is correct
10 Correct 1 ms 2388 KB Output is correct
11 Correct 2 ms 2516 KB Output is correct
12 Correct 2 ms 2516 KB Output is correct
13 Correct 2 ms 2516 KB Output is correct
14 Correct 2 ms 2516 KB Output is correct
15 Correct 2 ms 2516 KB Output is correct
16 Correct 1 ms 2516 KB Output is correct
17 Correct 2 ms 2516 KB Output is correct
18 Correct 2 ms 2516 KB Output is correct
19 Correct 2 ms 2484 KB Output is correct
20 Correct 2 ms 2516 KB Output is correct
21 Correct 2 ms 2516 KB Output is correct
22 Correct 2 ms 2516 KB Output is correct
23 Correct 2 ms 2516 KB Output is correct
24 Correct 2 ms 2516 KB Output is correct
25 Correct 2 ms 2516 KB Output is correct
26 Correct 2 ms 2492 KB Output is correct
27 Correct 2 ms 2516 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 3 ms 2772 KB Output is correct
30 Correct 2 ms 2516 KB Output is correct
31 Correct 2 ms 2644 KB Output is correct
32 Correct 2 ms 2516 KB Output is correct
33 Correct 5 ms 2900 KB Output is correct
34 Correct 3 ms 2900 KB Output is correct
35 Correct 6 ms 3184 KB Output is correct
36 Correct 2 ms 2644 KB Output is correct
37 Correct 5 ms 3136 KB Output is correct
38 Correct 6 ms 3284 KB Output is correct
39 Correct 6 ms 3284 KB Output is correct
40 Correct 5 ms 3284 KB Output is correct
41 Correct 6 ms 3336 KB Output is correct
42 Correct 5 ms 3412 KB Output is correct
43 Correct 5 ms 3392 KB Output is correct
44 Correct 7 ms 3476 KB Output is correct
45 Correct 9 ms 3796 KB Output is correct
46 Correct 9 ms 3908 KB Output is correct
47 Correct 11 ms 3956 KB Output is correct
48 Correct 5 ms 3444 KB Output is correct
49 Correct 7 ms 3412 KB Output is correct
50 Correct 4 ms 3148 KB Output is correct
51 Correct 12 ms 4384 KB Output is correct
52 Correct 12 ms 4304 KB Output is correct
53 Correct 7 ms 3912 KB Output is correct
54 Correct 3 ms 2772 KB Output is correct
55 Correct 3 ms 2772 KB Output is correct
56 Correct 8 ms 4092 KB Output is correct
57 Correct 2 ms 3028 KB Output is correct
58 Correct 7 ms 3512 KB Output is correct
59 Correct 7 ms 3664 KB Output is correct
60 Correct 8 ms 3664 KB Output is correct
61 Correct 7 ms 3728 KB Output is correct
62 Correct 12 ms 4052 KB Output is correct
63 Correct 32 ms 4360 KB Output is correct
64 Correct 35 ms 4404 KB Output is correct
65 Correct 44 ms 5580 KB Output is correct
66 Correct 81 ms 5964 KB Output is correct
67 Correct 64 ms 6004 KB Output is correct