Submission #155737

#	Time	Username	Problem	Language	Result	Execution time	Memory
155737		Flying_dragon_02	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	0 / 100	959 ms	118904 KiB

brunhilda

#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second
#define pb push_back
#define mp make_pair

typedef pair<int, int> ii;

const int mod = 1e9 + 7;

const int inf = 1e9;

int add(int x, int y) {
    return (1ll * x + 1ll * y) % mod;
}

int del(int x, int y) {
    return ((1ll * x - 1ll * y) % mod + mod) % mod;
}

int mul(int x, int y) {
    return (1ll * x * 1ll * y) % mod;
}

const int N = 1e7 + 5;

int dp[2 * N], p[2 * N], used[N];

deque<int> dq;

int m, q;

int main() {
    scanf("%d%d", &m, &q);
    for(int i = 0; i < N; i++)
        p[i] = 0;
    for(int i = 1; i <= N - 5; i++)
        dp[i] = inf;
    for(int i = 1; i <= m; i++) {
        int x;
        scanf("%d", &x);
        for(int l = 0; l < N; l++) {
            if(x * l >= N) break;
            p[x * l] = max(p[x * l], x);
        }
    }
    for(int i = 0; i <= N - 5; i++) {
    	//if(i <= 6)
    	//cout << used[i] << " " << dq.size() << " " << i << "\n";
    	for(int j = 1; j <= used[i]; j++)
            dq.pop_back();
        if(dq.size() > 0)
            dp[i] = dq.back();
        if(p[i] != 0)
    		 dq.push_front(dp[i] + 1);
        if(i + p[i] > N - 5) continue;
        used[i + p[i]] ++;
    }
    for(int i = 1; i <= q; i++) {
        int x;
        cin >> x;
        if(dp[x] == inf)
            cout << "oo\n";
        else
            cout << dp[x] << "\n";
    }
}

Compilation message (stderr)

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:37:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &m, &q);
     ~~~~~^~~~~~~~~~~~~~~~
brunhilda.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &x);
         ~~~~~^~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 60