Submission #44111

#	Time	Username	Problem	Language	Result	Execution time	Memory
44111		imaxblue	Strongbox (POI11_sej)	C++17	70 / 100	1087 ms	2860 KiB

sej

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pb push_back
#define x first
#define y second
#define pii pair<int, int>
#define p3i pair<pii, int>
#define pll pair<ll, ll>
#define p3l pair<pll, ll>
#define lseg L, (L+R)/2, N*2+1
#define rseg (L+R)/2+1, R, N*2+2
#define ub upper_bound
#define lb lower_bound
#define pq priority_queue
#define MN 1000000007
#define fox(k, x) for (int k=0; k<x; ++k)
#define fox1(k, x) for (int k=1; k<=x; ++k)
#define foxr(k, x) for (int k=x-1; k>=0; --k)
#define fox1r(k, x) for (int k=x; k>0; --k)
#define ms multiset
#define flood(x) memset(x, 0x3f3f3f3f, sizeof x)
#define drain(x) memset(x, 0, sizeof x)
#define rng() ((rand() << 14)+rand())
#define scan(X) do{while((X=getchar())<'0'); for(X-='0'; '0'<=(_=getchar()); X=(X<<3)+(X<<1)+_-'0');}while(0)
char _;
#define pi 3.14159265358979323846

ll gcd(ll x, ll y){return y==0?x:gcd(y, x%y);}

vector<ll> f;
ll d;
ll n, a[250005], k, g;
void factor(ll X){
    for (ll l=1; l*l<=X; ++l){
        if (X%l==0){
            f.pb(l);
            if (l*l!=X) f.pb(X/l);
        }
    }
    sort(f.begin(), f.end());
}
bool check(ll G){
    fox(l, n){
        if ((a[l]%g)%G==0) return 0;
    }
    return 1;
}
int main(){
    scanf("%lli%lli", &d, &n);
    --n; fox(l, n) scanf("%lli", &a[l]);
    scanf("%lli", &k);
    g=gcd(k, d);
    srand(time(NULL));
    random_shuffle(a, a+n);
    //return 0;
    //cout << k << ' ' << d << ' ' << g << endl;
    factor(g);
    fox(l, f.size()){
        //cout << f[l] << endl;
        if (check(f[l])){
            cout << d/f[l];
            return 0;
        }
    }
    return 0;
}

Compilation message (stderr)

sej.cpp: In function 'int main()':
sej.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define fox(k, x) for (int k=0; k<x; ++k)
sej.cpp:60:9:
     fox(l, f.size()){
         ~~~~~~~~~~~               
sej.cpp:60:5: note: in expansion of macro 'fox'
     fox(l, f.size()){
     ^~~
sej.cpp:51:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lli%lli", &d, &n);
     ~~~~~^~~~~~~~~~~~~~~~~~~~
sej.cpp:52:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     --n; fox(l, n) scanf("%lli", &a[l]);
                    ~~~~~^~~~~~~~~~~~~~~
sej.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lli", &k);
     ~~~~~^~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 7 / 7
• Subtask 4: 7 / 7
• Subtask 5: 7 / 7
• Subtask 6: 7 / 7
• Subtask 7: 7 / 7
• Subtask 8: 7 / 7
• Subtask 9: 7 / 7
• Subtask 10: 7 / 7
• Subtask 11: 0 / 7
• Subtask 12: 0 / 7
• Subtask 13: 0 / 8
• Subtask 14: 0 / 8