Submission #102159

#	Time	Username	Problem	Language	Result	Execution time	Memory
102159		thebes	Job Scheduling (CEOI12_jobs)	C++14	100 / 100	476 ms	16760 KiB

jobs

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

const int MN = 1e5+5;
int N, D, M, i, x, lo, hi, src[10*MN];
vector<int> adj[MN];
queue<int> q;

bool check(int m){
    while(q.size()) q.pop();
    for(int i=1;i<=N;i++){
        for(auto v : adj[i]) q.push(v);
        int sz = min((int)q.size(), m);
        while(sz--){
            if(src[q.front()]+D<i) return 0;
            q.pop();
        }
    }
    return q.size()==0;
}

int main(){
    for(scanf("%d%d%d",&N,&D,&M),i=1;i<=M;i++)
        scanf("%d",&x), adj[x].push_back(i), src[i]=x;
    lo = 1, hi = M;
    while(lo<hi){
        int m = lo+hi>>1;
        if(check(m)) hi=m;
        else lo=m+1;
    }
    printf("%d\n",lo);
    while(q.size()) q.pop();
    for(i=1;i<=N;i++){
        for(auto v: adj[i]) q.push(v);
        int sz = min((int)q.size(), lo);
        while(sz--){
            printf("%d ",q.front());
            q.pop();
        }
        printf("0\n");
    }
    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:27:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         int m = lo+hi>>1;
                 ~~^~~
jobs.cpp:23:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(scanf("%d%d%d",&N,&D,&M),i=1;i<=M;i++)
         ~~~~~~~~~~~~~~~~~~~~~~~~^~~~
jobs.cpp:24:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&x), adj[x].push_back(i), src[i]=x;
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~

• Subtask 1: 100 / 100