Submission #1126016

#	Time	Username	Problem	Language	Result	Execution time	Memory
1126016		KasymK	Brunhilda’s Birthday (BOI13_brunhilda)	C++20	100 / 100	341 ms	79248 KiB

brunhilda

#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N = 1e5+5;
const int M = 1e7+5;
int p[N], ad[M], dp[M];
 
int main(){
    // freopen("file.txt", "r", stdin);
    int m, q;
    scanf("%d%d", &m, &q);
    for(int i = 1; i <= m; ++i){
        scanf("%d", p+i);
        for(int j = p[i]; j<M-3; j+=p[i])
            ad[j-1]=p[i]-1;
        umax(ad[M-5], (M-5)%p[i]);
    }
    for(int i = M-5; i >= 1; --i)
        umax(ad[i], ad[i+1]-1);
    for(int i = 1; i < M-4; ++i){
        dp[i]=dp[i-ad[i]];
        if(ad[i]!=0 and ~dp[i])
            dp[i]++;
        else
            dp[i]=-1;
    }
    while(q--){
        int x;
        scanf("%d", &x);
        if(~dp[x]){
            printf("%d\n", dp[x]);
            continue;
        }
        puts("oo");
    }
    return 0;
}

Compilation message (stderr)

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     scanf("%d%d", &m, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~
brunhilda.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |         scanf("%d", p+i);
      |         ~~~~~^~~~~~~~~~~
brunhilda.cpp:40:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~

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