Submission #739020

#	Time	Username	Problem	Language	Result	Execution time	Memory
739020		vjudge1	Job Scheduling (CEOI12_jobs)	C++17	100 / 100	378 ms	32756 KiB

jobs

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

using ll = long long;
using pii = pair<int,int>;
using pi3 = pair<int,pii>;

#define ON(n , k) ( (n) | ( 1 << (k) ))
#define OFF(n ,k) ( (n) & ( ~( 1 << (k))))
#define ISON(n ,k) ( ( (n)>>(k) ) & (1) )
#define F first
#define S second



const int N = 2e5+5;
const int mod = 1e9+7;
const int INF = 1e9+9;
const double PI = 3.1415926536;
int dx[10] = {0,  0, 1, -1, 1,  1, -1, -1, 0};
int dy[10] = {1, -1, 0,  0, 1, -1,  1, -1, 0};
char str[N];


int n, d, m;
vector<pii>v;
vector<vector<int>> v1(N), ans(N);



bool ok(int mid)
{
    for(int i = 0; i < n; i++)
    {
         v1[i].clear();
    }
    int i = 0;
    for(int j = 1; j <= n; j++)
    {

        for(int x = 0; x < mid; x++)
        {
            if(v[i].F > j)break;

            if(v[i].F + d < j)return false;
            v1[j - 1].push_back(v[i].S);
            i++;

            if(i == m)return true;
        }
    }

    return false;
}

void solve()
{
    scanf("%d%d%d", &n, &d, &m);

    for(int i = 1; i <= m; i++)
    {
        int x;
        scanf("%d", &x);
        v.push_back({x, i});
    }

    sort(v.begin(), v.end());


    int l = 0, r = m+2, mid;


    while(l + 1 < r)
    {
        mid = l + (r - l)/2;
        if(ok(mid))
        {
            r = mid;
            ans = v1;
        }
        else
        {
            l = mid;
        }
    }

    printf("%d\n", r);



    for(int j = 0; j < n ; j++)
    {
        for(int x : ans[j])
        {
            printf("%d ", x);
        }
        printf("0\n");
    }


}

int main()
{

    //freopen("", "r", stdin);
    //freopen("", "w", stdout);

    /*
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    */
    int T;
    T = 1 ;
    //scanf("%d" , &T);

    while(T--)
    {
        // init();
        solve();
    }

    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'void solve()':
jobs.cpp:58:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |     scanf("%d%d%d", &n, &d, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:63:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~

• Subtask 1: 100 / 100