Submission #816284

#	Time	Username	Problem	Language	Result	Execution time	Memory
816284		QwertyPi	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	94.92 / 100	1029 ms	114836 KiB

brunhilda

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

const int MAXN = 1e7 + 11;
const int MAXM = 1e5 + 11;
int p[MAXM];
int lp[MAXN], dp[MAXN], c[MAXN], c2[MAXN], cm = 0;

void del(int p){
    c2[c[p]]--;
    while(cm < MAXN - 1 && c2[cm] == 0) cm++;
}

int32_t main(){
    cin.tie(0); cout.tie(0)->sync_with_stdio(false);
    int n, Q; cin >> n >> Q;
    for(int i = 0; i < n; i++) cin >> p[i]; sort(p, p + n);
    for(int i = 0; i < n; i++){
        for(int j = p[i]; j < MAXN; j += p[i]){
            if(!lp[j]) lp[j] = p[i];
        }
    }

    dp[1] = 0; c2[0] = n; cm = 0;
    for(int i = 2; i < MAXN; i++){
        int x = i;
        while(lp[x] != 0){
            if(lp[x] != lp[x / lp[x]]){
                del(lp[x]);
            }
            x /= lp[x];
        }
        int cur = cm;
        x = i;
        while(lp[x] != 0){
            if(lp[x] != lp[x / lp[x]]){
                c[lp[x]] = cur + 1; c2[cur + 1]++;
            }
            x /= lp[x];
        }
        dp[i] = cur + 1;
    }
    for(int i = 0; i < Q; i++){
        int k; cin >> k; cout << (dp[k] != MAXN ? to_string(dp[k]) : "oo") << '\n';
    }
}

Compilation message (stderr)

brunhilda.cpp: In function 'int32_t main()':
brunhilda.cpp:17:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   17 |     for(int i = 0; i < n; i++) cin >> p[i]; sort(p, p + n);
      |     ^~~
brunhilda.cpp:17:45: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   17 |     for(int i = 0; i < n; i++) cin >> p[i]; sort(p, p + n);
      |                                             ^~~~

• Subtask 1: 17.77777777777778 / 20
• Subtask 2: 20 / 20
• Subtask 3: 57.142857142857146 / 60