제출 #1057683

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1057683		vjudge1	Sirni (COCI17_sirni)	C++17	140 / 140	669 ms	662256 KiB

sirni

#include<bits/stdc++.h>
using namespace std;
#define FOR(i, a, b)  for(int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, b, a) for(int i = (b), _a = (a); i >= _a; --i)
#define REP(i, a, b)  for(int i = (a), _b = (b); i < _b;  ++i)
#define REPD(i, b, a) for(int i = (b), _a = (a); i > _a;  --i)
#define MASK(i) (1LL << (i))
#define BIT(mask, i) (((mask) >> (i)) & 1)
#define __builtin_popcount __builtin_popcountll
#define all(val) val.begin(), val.end()
#define ll long long
#define ull unsigned long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define sz(v) (int)v.size()
#define fi first
#define se second

mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll Rand(ll l, ll r) {return l + rng() % (r - l + 1);}

template<class X, class Y>
    bool minimize(X &x, const Y &y) {
        if (x > y) {
            x = y;
            return true;
        } else return false;
    }
template<class X, class Y>
    bool maximize(X &x, const Y &y) {
        if (x < y) {
            x = y;
            return true;
        } else return false;
    }
template<class T>
    T Abs(const T &x) {
        return (x < 0 ? -x : x);    
    }

const int mod = 1e9 + 7;
const int inf = 1e9;
const int N = 1e5 + 5;
const int MAX = 1e7 + 5;

int n, a[N], nxt[MAX];
bool exist[MAX];
int par[MAX], sz[MAX];
vector<pii> g[MAX];
int mx;

int find(int u) {
    if(u == par[u]) return u;
    return par[u] = find(par[u]);
}

bool join(int u, int v) {
    u = find(u); v = find(v);
    if(u == v) return false;
    if(sz[u] < sz[v]) swap(u, v);
    sz[u] += sz[v];
    par[v] = u;
    return true;
}

void process() {
    cin >> n;
    FOR(i, 1, n) {
        cin >> a[i];
        nxt[a[i]] = a[i];
        mx = max(mx, a[i]);
        exist[a[i]] = 1;
    }
    FORD(i, mx, 0) {
        if(!exist[i]) nxt[i] = nxt[i + 1];
    }
    sort(a + 1, a + n + 1);
    FOR(i, 1, n) {
        if(!exist[a[i]]) continue;
        for(int j = a[i]; j <= mx; j += a[i]) {
            int res = (a[i] == j) ? a[i] + 1 : j;
            if(a[i] + j > nxt[res]) g[nxt[res] % a[i]].push_back({nxt[res], a[i]});   
        }
        exist[a[i]] = 0;
    }
    int ans = 0;
    FOR(i, 1, mx) par[i] = i, sz[i] = 1;
    FOR(i, 0, mx) {
        for(auto [u, v] : g[i]) {
            if(join(u, v)) ans += i;
        }
    }
    cout << ans << '\n';
}

signed main() {
    if(fopen("test.inp","r")) {
        freopen("test.inp","r",stdin);
        freopen("test.out","w",stdout);
    }
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    // clock_t start = clock();

    int ntests = 1;
    // cin >> ntests;
    while(ntests--) process();

    // cerr << "Time elapsed: " << clock() - start << " ms!\n";
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

sirni.cpp: In function 'int main()':
sirni.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         freopen("test.inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
sirni.cpp:99:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   99 |         freopen("test.out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14