Submission #623522

#	Time	Username	Problem	Language	Result	Execution time	Memory
623522		binisgiannis	Job Scheduling (CEOI12_jobs)	C++17	0 / 100	2 ms	340 KiB

jobs

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

typedef pair<int, int> pi;
#define x first 
#define y second 

int N, D, M; vector<pi> vec;

bool f(int x) {
    int index = 0;
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < x; j++) {
            if (vec[index].x > (i+1)) break;
            if ((i+1) - vec[index].x > D) return false;
            index++;
            if (index >= M) goto endofloop;
        }
    }

    endofloop:
    return index >= M;
}

vector<vector<int>> res(int x) {
    vector<vector<int>> res(N, vector<int>(x, 0));
    int index = 0;
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < x; j++) {
            res[i][j] = vec[index].y;
            index++;
            if (index >= M) goto endofloop;
        }
    }
 
    endofloop:
    return res;
}

int main() {
    ios::sync_with_stdio(0); cin.tie(0);

    freopen("analyze.txt", "r", stdin);
    freopen("out.txt", "w", stdout);

    cin >> N >> D >> M;
    vec.resize(M);

    for (int i = 0; i < M; i++) {
        cin >> vec[i].x;
        vec[i].y = i+1;
    }

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

    int l = 1, r = M; 
    while (l < r) {
        int mid = (l+r)/2;
        if (!f(mid)) l = mid+1;
        else {
            r = mid;
        }
    }

    vector<vector<int>> result = res(l);
    cout << l << '\n';
    for (int i = 0; i < result.size(); i++) {
        for (int j = 0; j < result[i].size(); j++) {
            if (result[i][0] == 0) break;
            cout << result[i][j] << ' ';
        }
        cout << 0 << '\n';
    }

    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:70:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |     for (int i = 0; i < result.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~
jobs.cpp:71:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         for (int j = 0; j < result[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~~~~~~
jobs.cpp:46:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |     freopen("analyze.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:47:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |     freopen("out.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100