oj.uz

답안 #191346

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
191346 2020-01-14T20:11:59 Z Ruxandra985 Kitchen (BOI19_kitchen) C++14
100 / 100
 31 ms 1016 KB 
#include <bits/stdc++.h>
#define DIMN 310
 
using namespace std;
int a[DIMN] , b[DIMN];
int v[DIMN] , tt[DIMN * DIMN] , ok[DIMN * DIMN];
int n , k;
int maybe (int sum){
 
    int nod , elem , solved , poz , i , put , outof;
    nod = sum;
    elem = 0;
    while (nod){
        v[++elem] = tt[nod];
        nod = nod - b[tt[nod]];
    }
 
    /// v e lista pe care vreau eu sa o am , cu suma fixa sum
    /// eu la suma asta am maximizat nr de elem distincte
    solved = 0;
    int s = 0;
    for (i=1;i<=elem;i++){
        if (b[v[i]] > n)
            solved++;
        else s += b[v[i]];
    }
    if (s / n + solved >= k)
        return 1;
    return 0;
}
int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    int m , sum , i , val , sol;
    fscanf (fin,"%d%d%d",&n,&m,&k);
    sum = 0;
    for (i=1;i<=n;i++){
        fscanf (fin,"%d",&a[i]);
        sum += a[i];
        if (a[i] < k){
            fprintf (fout,"Impossible");
            return 0;
        }
    }
    sort (a + 1 , a + n + 1);
    for (i=1;i<=m;i++){
        fscanf (fin,"%d",&b[i]);
    }
    sort (b + 1 , b + m + 1);
 
    /// ai putea face un rucsac asa de idee
    ok[0] = 1;
    tt[0] = -1;
 
    for (i = 1 ; i <= m ; i++ ){
        for (val = 300 * 300 ; val - b[i] >= 0 ; val--){
            if (!ok[val] && ok[val - b[i]]){
                ok[val] = 1;
                tt[val] = i;
            }
        }
    }
    /// 300 ^ 3
    sol = 2000000000;
 
    for (val = sum ; val <= 300 * 300 ; val++){
 
        if (ok[val] && maybe(val)){
            sol = min (sol , val - sum);
            break;
        }
 
    }
    if (sol == 2000000000){
        fprintf (fout,"Impossible");
    }
    else {
        fprintf (fout,"%d",sol);
    }
    return 0;
}

Compilation message

kitchen.cpp: In function 'int maybe(int)':
kitchen.cpp:10:31: warning: unused variable 'poz' [-Wunused-variable]
     int nod , elem , solved , poz , i , put , outof;
                               ^~~
kitchen.cpp:10:41: warning: unused variable 'put' [-Wunused-variable]
     int nod , elem , solved , poz , i , put , outof;
                                         ^~~
kitchen.cpp:10:47: warning: unused variable 'outof' [-Wunused-variable]
     int nod , elem , solved , poz , i , put , outof;
                                               ^~~~~
kitchen.cpp: In function 'int main()':
kitchen.cpp:36:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     fscanf (fin,"%d%d%d",&n,&m,&k);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:39:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         fscanf (fin,"%d",&a[i]);
         ~~~~~~~^~~~~~~~~~~~~~~~
kitchen.cpp:48:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         fscanf (fin,"%d",&b[i]);
         ~~~~~~~^~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 7 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #2
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 7 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 4 ms 376 KB Output is correct
10 Correct 4 ms 504 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 26 ms 876 KB Output is correct
2 Correct 23 ms 760 KB Output is correct
3 Correct 27 ms 632 KB Output is correct
4 Correct 27 ms 1016 KB Output is correct
5 Correct 27 ms 988 KB Output is correct
6 Correct 21 ms 760 KB Output is correct

Subtask #4
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 380 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #5
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 7 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 4 ms 376 KB Output is correct
10 Correct 4 ms 504 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 26 ms 876 KB Output is correct
15 Correct 23 ms 760 KB Output is correct
16 Correct 27 ms 632 KB Output is correct
17 Correct 27 ms 1016 KB Output is correct
18 Correct 27 ms 988 KB Output is correct
19 Correct 21 ms 760 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 376 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 380 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 23 ms 940 KB Output is correct
26 Correct 31 ms 760 KB Output is correct
27 Correct 16 ms 504 KB Output is correct
28 Correct 23 ms 760 KB Output is correct
29 Correct 23 ms 888 KB Output is correct
30 Correct 27 ms 1016 KB Output is correct