Submission #60813

#	Time	Username	Problem	Language	Result	Execution time	Memory
60813		RezwanArefin01	Brunhilda’s Birthday (BOI13_brunhilda)	C++17	93.17 / 100	605 ms	89284 KiB

brunhilda

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> ii; 

const int N = 1e7 + 1; 
const int M = 1e5 + 1; 
int m, q, d[N], p, dp[N]; 

int main(int argc, char const *argv[]) {
	scanf("%d %d", &m, &q); 
	ll prod = 1; bool flag = 0; 
	for(int i = 0; i < m; i++) { 
		scanf("%d", &p); 
		if(prod * p <= 1e7) prod *= p;
		else flag = 1; 
		for(int j = 0; j < N; j += p) d[j] = p; 
	}	
	int prv = 0;
	for(int i = 1; i < N; i++) {
		while(prv < i) {
			if(!d[prv] || prv + d[prv] <= i) ++prv; 
			else break; 
		}
		if(prv == i) break; 
		dp[i] = dp[prv] + 1; 
	}
	while(q--) {
		int x; scanf("%d", &x);
		if(x >= (flag ? 1e7 : prod)) 
			puts("oo"); 
		else {
			printf("%d\n", dp[x]);
		} 
	}
}

Compilation message (stderr)

brunhilda.cpp: In function 'int main(int, const char**)':
brunhilda.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &m, &q); 
  ~~~~~^~~~~~~~~~~~~~~~~
brunhilda.cpp:15:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &p); 
   ~~~~~^~~~~~~~~~
brunhilda.cpp:30:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int x; scanf("%d", &x);
          ~~~~~^~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 18.88888888888889 / 20
• Subtask 3: 54.285714285714285 / 60