Submission #1051872

#	Time	Username	Problem	Language	Result	Execution time	Memory
1051872		manhlinh1501	Job Scheduling (CEOI12_jobs)	C++17	10 / 100	76 ms	38228 KiB

jobs

#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
using pii = pair<int, int>;
const int MAXN = 1e6 + 5;

int N, M, D;
int a[MAXN];
vector<int> g[MAXN];

bool check(int K) {
    int cnt = 0;
    for(int i = 1; i <= N; i++) {
        cnt += g[i].size();
        if(cnt > K * D) return false;
        cnt = cnt - min(cnt, K);
    }
    return true;
}

signed main() {
#define TASK "code"

    if (fopen(TASK ".inp", "r")) {
        freopen(TASK ".inp", "r", stdin);
        freopen(TASK ".out", "w", stdout);
    }

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> N >> D >> M;
    for(int i = 1; i <= M; i++) {
        cin >> a[i];
    }
    for(int i = 1; i <= M; i++) g[a[i]].emplace_back(i);
    int low = 1, high = M;
    int ans = -1;
    while(low <= high) {
        int mid = (low + high) / 2;
        if(check(mid)) {
            ans = mid;
            high = mid - 1;
        } else low = mid + 1;
    }
    cout << ans << "\n";
    queue<int> Q;
    for(int i = 1; i <= N; i++) {
        for(int p : g[i])
            Q.emplace(p);
        int cnt = 0;
        while(!Q.empty() and cnt < ans) {
            int p = Q.front();
            cout << p << " ";
            Q.pop();
            cnt++;
        }
        cout << "0\n";
    }
    return (0 ^ 0);
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:25:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         freopen(TASK ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:26:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen(TASK ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 100