Submission #442251

#	Time	Username	Problem	Language	Result	Execution time	Memory
442251		cpp219	Job Scheduling (CEOI12_jobs)	C++14	100 / 100	244 ms	9796 KiB

jobs

#pragma GCC optimization O2
#pragma GCC optimization "unroll-loop"
#pragma target ("avx2")

#include <bits/stdc++.h>
#define ll int
#define ld long double
#define fs first
#define sc second
using namespace std;
typedef pair<ll,ll> LL;
const ll N = 1e6 + 9;
const ll Log2 = 20;
const ll inf = 1e9 + 7;

ll n,m,d,a[N],pos[N];

bool lf(ll x,ll y){
    return a[x] < a[y];
}

vector<ll> ans[100009];

bool chk(ll mid){
    ll cur = 1;
    for (ll day = 1;day <= n;day++){
        ll have = mid; ans[day].clear();
        while(have > 0 && cur <= m&&a[pos[cur]] <= day){
            if (day - a[pos[cur]] > d) return 0;
            //ans[day].push_back(pos[cur]);
            cur++; have--;
        }
    }
    return 1;
}

int main(){
    ios_base::sync_with_stdio(NULL); cin.tie(0); cout.tie(0);
    #define task "test"
    if (fopen(task".INP","r")){
        freopen(task".INP","r",stdin);
        //freopen(task".OUT","w",stdout);
    }
    cin>>n>>d>>m;
    for (ll i = 1;i <= m;i++) cin>>a[i],pos[i] = i;
    sort(pos + 1,pos + m + 1,lf);
    ll l,mid,h; l = 1; h = m;
    //cout<<chk(2); return 0;
    while(l <= h){
        mid = (l + h)/2;
        if (chk(mid)) h = mid - 1;
        else l = mid + 1;
    }
    cout<<l<<"\n"; chk(l); //return 0;
    for (ll i = 1;i <= n;i++){
        for (auto j : ans[i]) cout<<j<<" "; cout<<"0\n";
    }
}

Compilation message (stderr)

jobs.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization O2
      | 
jobs.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
jobs.cpp:3: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    3 | #pragma target ("avx2")
      | 
jobs.cpp: In function 'int main()':
jobs.cpp:56:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   56 |         for (auto j : ans[i]) cout<<j<<" "; cout<<"0\n";
      |         ^~~
jobs.cpp:56:45: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   56 |         for (auto j : ans[i]) cout<<j<<" "; cout<<"0\n";
      |                                             ^~~~
jobs.cpp:41:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         freopen(task".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100