Submission #227947

#	Time	Username	Problem	Language	Result	Execution time	Memory
227947		PeppaPig	Kitchen (BOI19_kitchen)	C++14	100 / 100	46 ms	1072 KiB

kitchen

#include <bits/stdc++.h>

using namespace std;

const int N = 305;

int n, m, k, sum;
int A[N], B[N], dp[2][N * N];

int main() {
    scanf("%d %d %d", &n, &m, &k);
    if(m < k) return !printf("Impossible\n");
    for(int i = 1; i <= n; i++) {
        scanf("%d", A + i), sum += A[i];
        if(A[i] < k) return !printf("Impossible\n");
    }
    for(int i = 1; i <= m; i++) scanf("%d", B + i);

    for(int i = 1; i < N * N; i++) dp[0][i] = -1e9;
    for(int i = 1; i <= m; i++) {
        int now = i & 1, pre = now ^ 1;
        for(int j = 0; j < N * N; j++) {
            dp[now][j] = dp[pre][j];
            if(j - B[i] >= 0 && dp[pre][j - B[i]] != -1e9)
                dp[now][j] = max(dp[now][j], dp[pre][j - B[i]] + min(n, B[i]));
        }
    }
    for(int j = sum; j < N * N; j++) if(dp[m & 1][j] >= n * k)
        return !printf("%d\n", j - sum);
    printf("Impossible\n");

    return 0;
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &n, &m, &k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
kitchen.cpp:14:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", A + i), sum += A[i];
         ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
kitchen.cpp:17:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(int i = 1; i <= m; i++) scanf("%d", B + i);
                                 ~~~~~^~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 22 / 22
• Subtask 3: 20 / 20
• Subtask 4: 21 / 21
• Subtask 5: 28 / 28