Submission #648315

#	Time	Username	Problem	Language	Result	Execution time	Memory
648315		ghostwriter	Sterilizing Spray (JOI15_sterilizing)	C++14	10 / 100	79 ms	5376 KiB

sterilizing

#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include <debug.h>
#else
#define debug(...)
#endif
#define ft front
#define bk back
#define st first
#define nd second
#define ins insert
#define ers erase
#define pb push_back
#define pf push_front
#define _pb pop_back
#define _pf pop_front
#define lb lower_bound
#define ub upper_bound
#define mtp make_tuple
#define bg begin
#define ed end
#define all(x) (x).bg(), (x).ed()
#define sz(x) (int)(x).size()
typedef long long ll; typedef unsigned long long ull;
typedef double db; typedef long double ldb;
typedef pair<int, int> pi; typedef pair<ll, ll> pll;
typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pi> vpi; typedef vector<pll> vpll;
typedef string str;
template<typename T> T gcd(T a, T b) { return (b == 0? a : gcd(b, a % b)); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
#define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
#define FOS(i, r, l) for (int (i) = (r); (i) >= (l); --(i))
#define FRN(i, n) for (int (i) = 0; (i) < (n); ++(i))
#define FSN(i, n) for (int (i) = (n) - 1; (i) >= 0; --(i))
#define EACH(i, x) for (auto &(i) : (x))
#define WHILE while
#define file "TEST"
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
ll rand(ll l, ll r) { return uniform_int_distribution<ll>(l, r)(rd); }
/*
----------------------------------------------------------------
    END OF TEMPLATE
----------------------------------------------------------------
    Tran The Bao - ghostwriter
    Training for VOI23 gold medal
----------------------------------------------------------------
    DIT ME CHUYEN BAO LOC
----------------------------------------------------------------
*/
const int N = 1e5 + 1;
int n, q, k, c[N];
ll f[N];
multiset<int> s;
void upd(int pos, int v) { for (int i = pos; i <= n; i += (i & -i)) f[i] += v; }
ll get(int pos) { int rs = 0; for (int i = pos; i > 0; i -= (i & -i)) rs += f[i]; return rs; }
signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);
    cin >> n >> q >> k;
    FOR(i, 1, n) {
    	cin >> c[i];
    	if (c[i]) {
    		upd(i, c[i]);
    		s.ins(i);
    	}
    }
    WHILE(q--) {
    	int s1, t, u;
    	cin >> s1 >> t >> u;
    	if (s1 == 1) {
    		if (c[t]) {
    			upd(t, -c[t]);
    			s.ers(t);
    		}
    		c[t] = u;
    		if (c[t]) {
    			upd(t, c[t]);
    			s.ins(t);
    		}
    		continue;
    	}
    	if (s1 == 2) {
    		if (k == 1 || s.empty() || *--s.ed() < t || *s.bg() > u) continue;
    		auto cur = s.lb(t);
    		vi a;
    		WHILE(cur != s.ed() && *cur <= u) {
    			upd(*cur, -c[*cur]);
    			c[*cur] /= k;
    			if (!c[*cur]) a.pb(*cur);
    			else upd(*cur, c[*cur]);
    			++cur;
    		}
    		EACH(i, a) s.ers(i);
    		continue;
    	}
    	cout << get(u) - get(t - 1) << '\n';
    }
    return 0;
}
/*
5 10 3
1
2
8
1
3
1 2 5
2 3 5
3 2 5
2 1 4
1 3 2
3 3 5
1 2 4
2 1 2
1 1 4
3 1 5
----------------------------------------------------------------
From Benq:
    stuff you should look for
        * int overflow, array bounds
        * special cases (n=1?)
        * do smth instead of nothing and stay organized
        * WRITE STUFF DOWN
        * DON'T GET STUCK ON ONE APPROACH
----------------------------------------------------------------
*/

Compilation message (stderr)

sterilizing.cpp: In function 'int main()':
sterilizing.cpp:32:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   32 | #define FOR(i, l, r) for (int (i) = (l); (i) <= (r); ++(i))
      |                               ^
sterilizing.cpp:62:5: note: in expansion of macro 'FOR'
   62 |     FOR(i, 1, n) {
      |     ^~~
sterilizing.cpp:36:31: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   36 | #define EACH(i, x) for (auto &(i) : (x))
      |                               ^
sterilizing.cpp:95:7: note: in expansion of macro 'EACH'
   95 |       EACH(i, a) s.ers(i);
      |       ^~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 10 / 10
• Subtask 4: 0 / 75