Submission #74689

#	Time	Username	Problem	Language	Result	Execution time	Memory
74689		kjain_1810	Brunhilda’s Birthday (BOI13_brunhilda)	C++17	97.78 / 100	349 ms	78528 KiB

brunhilda

#include<bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define ind(n) scanf("%d", &n)
#define ind2(n, m) scanf("%d%d", &n, &m)
#define ind3(n, m, k) scanf("%d%d%d", &n, &m, &k)
#define inlld(n) scanf("%lld", &n)
#define inlld2(n, m) scanf("%lld%lld", &n, &m)
#define inlld3(n, m, k) scanf("%lld%lld%lld", &n, &m, &k)

using namespace std;

const int N=1e7+5;
const int MOD=1e9+7;

typedef long long ll;
typedef long double ld;

int n, q;
int arr[N], dp[N];

int solve(int i)
{
    if(i==0)
        return 0;
    if(dp[i]!=-1)
        return dp[i];
    int ans=-1e8, best=0;
    if(q==1)
    {
        for(int a=n; a>=1; a--)
        {
            if(i%arr[a]==0)
                continue;
            if(i%arr[a]>ans)
            {
                ans=i%arr[a];
                best=a;
            }
        }
    }
    else
    {
        for(int a=n; a>=max(1, n-500); a--)
        {
            if(i%arr[a]==0)
                continue;
            if(i%arr[a]>ans)
            {
                ans=i%arr[a];
                best=a;
            }
        }
    }
    if(best)
        return dp[i]=solve(i-ans)+1;
    else
        return 1e8;
}

signed main()
{
    ind2(n, q);
    for(int a=1; a<=n; a++)
        ind(arr[a]);
    memset(dp, -1, sizeof(dp));
    while(q--)
    {
        int x;
        ind(x);
        int ans=solve(x);
        if(ans<1e8)
            printf("%d\n", ans);
        else
            printf("oo\n");
    }
    return 0;
}

Compilation message (stderr)

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:6:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define ind2(n, m) scanf("%d%d", &n, &m)
                    ~~~~~^~~~~~~~~~~~~~~~
brunhilda.cpp:64:5: note: in expansion of macro 'ind2'
     ind2(n, q);
     ^~~~
brunhilda.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define ind(n) scanf("%d", &n)
                ~~~~~^~~~~~~~~~
brunhilda.cpp:66:9: note: in expansion of macro 'ind'
         ind(arr[a]);
         ^~~
brunhilda.cpp:5:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define ind(n) scanf("%d", &n)
                ~~~~~^~~~~~~~~~
brunhilda.cpp:71:9: note: in expansion of macro 'ind'
         ind(x);
         ^~~

• Subtask 1: 20 / 20
• Subtask 2: 17.77777777777778 / 20
• Subtask 3: 60 / 60