Submission #553271

#	Time	Username	Problem	Language	Result	Execution time	Memory
553271		Soul234	Job Scheduling (CEOI12_jobs)	C++14	65 / 100	358 ms	44240 KiB

jobs

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

void DBG() { cerr << "]\n"; }
template<class H, class... T> void DBG(H h, T... t) {
    cerr << h; if(sizeof...(t)) cerr << ", ";
    DBG(t...);
}
#ifdef LOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif // LOCAL

#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 each(e,a) for(auto &e : (a))
#define sz(v) (int)(v).size()
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pb push_back
#define tcT template<class T
#define nl "\n"

using ll = long long;
using vi = vector<int>;
using pi = pair<int,int>;
using str = string;
tcT> using V = vector<T>;
tcT> using pqg = priority_queue<T,vector<T>,greater<T>>;

void setIO(string NAME = "") {
    cin.tie(0)->sync_with_stdio(0);
    if(sz(NAME)) {
        freopen((NAME + ".in").c_str(),"r",stdin);
        freopen((NAME + ".out").c_str(),"w",stdout);
    }
}

const int MX = 1e6+5;
int N, D, M;
array<int,2> A[MX];
vi ans[MX];

bool ok(int x) {
    int pt = 0;
    FOR(d,1,N+1) {
        ans[d].clear();
        F0R(_,x) {
            if(pt>=M || A[pt][0] > d) break;
            if(A[pt][0]+D >= d) {
                assert(A[pt][0] <= d);
                ans[d].pb(A[pt++][1]+1);
            }
            else return false;
        }
    }
    return true;
}

void solve() {
    cin>>N>>D>>M;
    F0R(i,M) {
        cin>>A[i][0];
        A[i][1] = i;
    }
    sort(A,A+M);
    int lo = 0, hi = M+1;
    while(lo<hi) {
        int mid = lo + (hi-lo)/2;
        if(ok(mid)) hi = mid;
        else lo = mid+1;
    }
    cout << lo << nl;
    ok(lo);
    FOR(d,1,N+1) {
        F0R(_,sz(ans[d])) cout << ans[d][_] << " ";
        cout << "0\n";
    }
}

int main() {
    setIO();

    int t=1;
    //cin>>t;
    while(t-->0) {
        solve();
    }

    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'void setIO(std::string)':
jobs.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen((NAME + ".in").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen((NAME + ".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 65 / 100