Submission #265026

#	Time	Username	Problem	Language	Result	Execution time	Memory
265026		jeqcho	Jakarta Skyscrapers (APIO15_skyscraper)	C++17	Compilation error	0 ms	0 KiB

skyscraper

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pair<int,int>> vpi;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define rsz resize
#define sz(x) int(x.size())
#define all(x) begin(x), end(x)
#define f first
#define s second

int const n=2e3;
int dist[n];
vi powin[n];
int N,M;
int const m=3e4;
int B[m], P[m];

void dij(int x)
{
    dist[x]=0;
    priority_queue<pii>q;
    bitset<N> pro;
    q.push({0,x});
    int b,w;
    vpi adjnow;
    while(!q.empty())
    {
        int a = q.top().s;
        q.pop();
        if(pro[a])continue;
        pro[a]=1;
        adjnow.clear();
        trav(pow, powin[a])
        {
            for(int j=0; a+j*pow<N; ++j)
            {
                adjnow.pb({a+j*pow, j});
            }
            for(int j=-1; a+j*pow>=0; --j)
            {
                adjnow.pb({a+j*pow, -j});
            }
        }
        trav(e, adjnow)
        {
            b=e.f;
            w=e.s;
            if(dist[a]+w<dist[b])
            {
                dist[b]=dist[a]+w;
                q.push({-dist[b],b});
            }
        }
    }
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin>>N>>M;
    F0R(i,M)
    {
        cin>>B[i]>>P[i];
        powin[B[i]].pb(P[i]);
    }
    fill(dist,dist+N,1e9);
    dij(B[0]);
    if(dist[B[1]]==1e9)cout<<-1<<'\n';
    else cout<<dist[B[1]]<<'\n';
    return 0;
}

Compilation message (stderr)

skyscraper.cpp: In function 'void dij(int)':
skyscraper.cpp:33:13: error: the value of 'N' is not usable in a constant expression
   33 |     bitset<N> pro;
      |             ^
skyscraper.cpp:25:5: note: 'int N' is not const
   25 | int N,M;
      |     ^
skyscraper.cpp:33:13: note: in template argument for type 'long unsigned int'
   33 |     bitset<N> pro;
      |             ^
skyscraper.cpp:41:17: error: invalid types 'int[int]' for array subscript
   41 |         if(pro[a])continue;
      |                 ^
skyscraper.cpp:42:14: error: invalid types 'int[int]' for array subscript
   42 |         pro[a]=1;
      |              ^