oj.uz

Submission #331353

# Submission time Handle Problem Language Result Execution time Memory
331353 2020-11-28T05:34:15 Z aloo123 Pilot (NOI19_pilot) C++14
89 / 100
 1000 ms 110572 KB 
#include <bits/stdc++.h>
using namespace std;
 
using ll = long long;
using ld = long double;
using db = double; 
using str = string; // yay python!
 
using pi = pair<int,int>;
using pl = pair<ll,ll>;
using pd = pair<db,db>;
 
using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vd = vector<db>; 
using vs = vector<str>;
using vpi = vector<pi>;
using vpl = vector<pl>; 
using vpd = vector<pd>;
 
#define tcT template<class T
// ^ lol this makes everything look weird but I'll try it
tcT> using V = vector<T>; 
tcT, size_t SZ> using AR = array<T,SZ>; 
 
// pairs
#define mp make_pair
#define f first
#define s second
 
// vectors
#define sz(x) (int)(x).size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend() 
#define sor(x) sort(all(x)) 
#define rsz resize
#define ins insert 
#define ft front() 
#define bk back()
#define pf push_front 
#define pb push_back
#define eb emplace_back 
#define lb lower_bound 
#define ub upper_bound 
 
// loops
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)
 
const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5;
const ll INF = 1e18; // not too close to LLONG_MAX
const ld PI = acos((ld)-1);
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count()); 
 
// helper funcs
constexpr int pct(int x) { return __builtin_popcount(x); } // # of bits set
constexpr int bits(int x) { return 31-__builtin_clz(x); } // floor(log2(x)) 
ll cdiv(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up
ll fdiv(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down
 
tcT> bool ckmin(T& a, const T& b) {
	return b < a ? a = b, 1 : 0; } // set a = min(a,b)
tcT> bool ckmax(T& a, const T& b) {
	return a < b ? a = b, 1 : 0; }
 
#define tcTU tcT, class U
tcTU> T fstTrue(T lo, T hi, U f) {
	hi ++; assert(lo <= hi); // assuming f is increasing
	while (lo < hi) { // find first index such that f is true 
		T mid = lo+(hi-lo)/2;
		f(mid) ? hi = mid : lo = mid+1; 
	} 
	return lo;
}
tcTU> T lstTrue(T lo, T hi, U f) {
	lo --; assert(lo <= hi); // assuming f is decreasing
	while (lo < hi) { // find first index such that f is true 
		T mid = lo+(hi-lo+1)/2;
		f(mid) ? lo = mid : hi = mid-1;
	} 
	return lo;
}
tcT> void remDup(vector<T>& v) { // sort and remove duplicates
	sort(all(v)); v.erase(unique(all(v)),end(v)); }
tcTU> void erase(T& t, const U& u) { // don't erase
	auto it = t.find(u); assert(it != end(t));
	t.erase(u); } // element that doesn't exist from (multi)set
 
// INPUT
#define tcTUU tcT, class ...U
tcT> void re(complex<T>& c);
tcTU> void re(pair<T,U>& p);
tcT> void re(vector<T>& v);
tcT, size_t SZ> void re(AR<T,SZ>& a);
 
tcT> void re(T& x) { cin >> x; }
void re(db& d) { str t; re(t); d = stod(t); }
void re(ld& d) { str t; re(t); d = stold(t); }
tcTUU> void re(T& t, U&... u) { re(t); re(u...); }
 
tcT> void re(complex<T>& c) { T a,b; re(a,b); c = {a,b}; }
tcTU> void re(pair<T,U>& p) { re(p.f,p.s); }
tcT> void re(vector<T>& x) { trav(a,x) re(a); }
tcT, size_t SZ> void re(AR<T,SZ>& x) { trav(a,x) re(a); }
 
// TO_STRING
#define ts to_string
str ts(char c) { return str(1,c); }
str ts(const char* s) { return (str)s; }
str ts(str s) { return s; }
str ts(bool b) { 
	#ifdef LOCAL
		return b ? "true" : "false"; 
	#else 
		return ts((int)b);
	#endif
}
tcT> str ts(complex<T> c) { 
	stringstream ss; ss << c; return ss.str(); }
str ts(vector<bool> v) {
	str res = "{"; F0R(i,sz(v)) res += char('0'+v[i]);
	res += "}"; return res; }
template<size_t SZ> str ts(bitset<SZ> b) {
	str res = ""; F0R(i,SZ) res += char('0'+b[i]);
	return res; }
tcTU> str ts(pair<T,U> p);
tcT> str ts(T v) { // containers with begin(), end()
	#ifdef LOCAL
		bool fst = 1; str res = "{";
		for (const auto& x: v) {
			if (!fst) res += ", ";
			fst = 0; res += ts(x);
		}
		res += "}"; return res;
	#else
		bool fst = 1; str res = "";
		for (const auto& x: v) {
			if (!fst) res += " ";
			fst = 0; res += ts(x);
		}
		return res;
 
	#endif
}
tcTU> str ts(pair<T,U> p) {
	#ifdef LOCAL
		return "("+ts(p.f)+", "+ts(p.s)+")"; 
	#else
		return ts(p.f)+" "+ts(p.s);
	#endif
}
 
// OUTPUT
tcT> void pr(T x) { cout << ts(x); }
tcTUU> void pr(const T& t, const U&... u) { 
	pr(t); pr(u...); }
void ps() { pr("\n"); } // print w/ spaces
tcTUU> void ps(const T& t, const U&... u) { 
	pr(t); if (sizeof...(u)) pr(" "); ps(u...); }
 
// DEBUG
void DBG() { cerr << "]" << endl; }
tcTUU> void DBG(const T& t, const U&... u) {
	cerr << ts(t); if (sizeof...(u)) cerr << ", ";
	DBG(u...); }
#ifdef LOCAL // compile with -DLOCAL, chk -> fake assert
	#define dbg(...) cerr << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
	#define chk(...) if (!(__VA_ARGS__)) cerr << "Line(" << __LINE__ << ") -> function(" \
		 << __FUNCTION__  << ") -> CHK FAILED: (" << #__VA_ARGS__ << ")" << "\n", exit(0);
#else
	#define dbg(...) 0
	#define chk(...) 0
#endif
 
// FILE I/O
void setIn(str s) { freopen(s.c_str(),"r",stdin); }
void setOut(str s) { freopen(s.c_str(),"w",stdout); }
void unsyncIO() { cin.tie(0)->sync_with_stdio(0); }
void setIO(str s = "") {
	unsyncIO();
	// cin.exceptions(cin.failbit); 
	// throws exception when do smth illegal
	// ex. try to read letter into int
	if (sz(s)) { setIn(s+".in"), setOut(s+".out"); } // for USACO
}
 
#define int ll
const int xd[4] = {1,0,-1,0}, yd[4] = {0,1,0,-1}; // for every grid problem!!
const int N = 1e6+5;
int h[N],ans[N];
pl y[N];
vl what[N];
int cur = 0;
bool is_part[N];
int nc2(int n){
	int x=n;
	x *= (n+1);
	x>>=1ll;
	return x;
}
struct dsu{
	int sz[N];
	int par[N];
	void init_node(int u){
		sz[u] = 1;
		par[u] = u;
		cur++;
		is_part[u]=true;
	}
	int find_par(int u){
		if(u==par[u])return u;
		return par[u]=find_par(par[u]);
	}
	void unite(int u,int v){
		u = find_par(u),v= find_par(v);
		if(u == v)return;
		if(sz[u]>sz[v])swap(u,v);
		cur -= nc2(sz[u]);
		cur -= nc2(sz[v]);
		sz[v]+=sz[u];
		cur += nc2(sz[v]);		
		par[u] =v;
		sz[u]=0;

	}
};
dsu g;
void solve(){
	int n,q;
	re(n,q);
	FOR(i,1,n+1){
		re(h[i]);
		what[h[i]].pb(i);
	}
	FOR(i,1,q+1){
		re(y[i].f);
		y[i].s = i;
	}
	sort(y+1,y+q+1);
	FOR(i,1,q+1){
		int x = y[i].f;
		FOR(j,y[i-1].f+1,x+1){
			if(what[j].empty()) continue;
			trav(id,what[j]){
				g.init_node(id);
				if(id != n && is_part[id+1]) g.unite(id,id+1);
				if(id != 1 && is_part[id-1]) g.unite(id-1,id);
			}
		}		
		ans[y[i].s] = cur;
	}
	FOR(i,1,q+1){
		ps(ans[i]);
	}

}
signed main() {
	setIO();	
	// you should actually read the stuff at the bottom
	int t=1;
	// re(t);
	while(t--){
		solve();
	}
}
 
/* stuff you should look for
	* read the probem 3 more times in case of WA :)
	* 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

pilot.cpp: In function 'void setIn(str)':
pilot.cpp:181:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  181 | void setIn(str s) { freopen(s.c_str(),"r",stdin); }
      |                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
pilot.cpp: In function 'void setOut(str)':
pilot.cpp:182:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  182 | void setOut(str s) { freopen(s.c_str(),"w",stdout); }
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23916 KB Output is correct
2 Correct 17 ms 23916 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 15 ms 23916 KB Output is correct
5 Correct 18 ms 23916 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 20 ms 23916 KB Output is correct
8 Correct 19 ms 23916 KB Output is correct
9 Correct 18 ms 24064 KB Output is correct
10 Correct 16 ms 23936 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23916 KB Output is correct
2 Correct 17 ms 23916 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 15 ms 23916 KB Output is correct
5 Correct 18 ms 23916 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 20 ms 23916 KB Output is correct
8 Correct 19 ms 23916 KB Output is correct
9 Correct 18 ms 24064 KB Output is correct
10 Correct 16 ms 23936 KB Output is correct
11 Correct 18 ms 23932 KB Output is correct
12 Correct 18 ms 23916 KB Output is correct
13 Correct 18 ms 23916 KB Output is correct
14 Correct 18 ms 23916 KB Output is correct
15 Correct 19 ms 23916 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23916 KB Output is correct
2 Correct 17 ms 23916 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 15 ms 23916 KB Output is correct
5 Correct 18 ms 23916 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 20 ms 23916 KB Output is correct
8 Correct 19 ms 23916 KB Output is correct
9 Correct 18 ms 24064 KB Output is correct
10 Correct 16 ms 23936 KB Output is correct
11 Correct 18 ms 23932 KB Output is correct
12 Correct 18 ms 23916 KB Output is correct
13 Correct 18 ms 23916 KB Output is correct
14 Correct 18 ms 23916 KB Output is correct
15 Correct 19 ms 23916 KB Output is correct
16 Correct 18 ms 23916 KB Output is correct
17 Correct 18 ms 23916 KB Output is correct
18 Correct 18 ms 24044 KB Output is correct
19 Correct 18 ms 24056 KB Output is correct
20 Correct 21 ms 23916 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23916 KB Output is correct
2 Correct 17 ms 23916 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 15 ms 23916 KB Output is correct
5 Correct 18 ms 23916 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 20 ms 23916 KB Output is correct
8 Correct 19 ms 23916 KB Output is correct
9 Correct 18 ms 24064 KB Output is correct
10 Correct 16 ms 23936 KB Output is correct
11 Correct 18 ms 23932 KB Output is correct
12 Correct 18 ms 23916 KB Output is correct
13 Correct 18 ms 23916 KB Output is correct
14 Correct 18 ms 23916 KB Output is correct
15 Correct 19 ms 23916 KB Output is correct
16 Correct 18 ms 23916 KB Output is correct
17 Correct 18 ms 23916 KB Output is correct
18 Correct 18 ms 24044 KB Output is correct
19 Correct 18 ms 24056 KB Output is correct
20 Correct 21 ms 23916 KB Output is correct
21 Correct 22 ms 23916 KB Output is correct
22 Correct 18 ms 24044 KB Output is correct
23 Correct 18 ms 24044 KB Output is correct
24 Correct 19 ms 24044 KB Output is correct
25 Correct 20 ms 24044 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 28268 KB Output is correct
2 Correct 68 ms 29276 KB Output is correct
3 Correct 50 ms 28140 KB Output is correct
4 Correct 60 ms 28780 KB Output is correct
5 Correct 55 ms 28168 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 114 ms 32252 KB Output is correct
2 Correct 85 ms 32388 KB Output is correct
3 Correct 78 ms 32236 KB Output is correct
4 Correct 76 ms 32492 KB Output is correct
5 Correct 78 ms 32236 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 82 ms 32236 KB Output is correct
2 Correct 83 ms 32236 KB Output is correct
3 Correct 92 ms 32364 KB Output is correct
4 Correct 80 ms 32492 KB Output is correct
5 Correct 84 ms 32492 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23916 KB Output is correct
2 Correct 17 ms 23916 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 15 ms 23916 KB Output is correct
5 Correct 18 ms 23916 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 20 ms 23916 KB Output is correct
8 Correct 19 ms 23916 KB Output is correct
9 Correct 18 ms 24064 KB Output is correct
10 Correct 16 ms 23936 KB Output is correct
11 Correct 47 ms 28268 KB Output is correct
12 Correct 68 ms 29276 KB Output is correct
13 Correct 50 ms 28140 KB Output is correct
14 Correct 60 ms 28780 KB Output is correct
15 Correct 55 ms 28168 KB Output is correct
16 Correct 49 ms 28652 KB Output is correct
17 Correct 65 ms 29804 KB Output is correct
18 Correct 58 ms 29936 KB Output is correct
19 Correct 39 ms 28544 KB Output is correct
20 Correct 55 ms 29804 KB Output is correct
21 Correct 50 ms 28524 KB Output is correct
22 Correct 59 ms 29548 KB Output is correct
23 Correct 45 ms 29036 KB Output is correct
24 Correct 51 ms 29420 KB Output is correct
25 Correct 46 ms 28780 KB Output is correct

Subtask #9
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23916 KB Output is correct
2 Correct 17 ms 23916 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 15 ms 23916 KB Output is correct
5 Correct 18 ms 23916 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 20 ms 23916 KB Output is correct
8 Correct 19 ms 23916 KB Output is correct
9 Correct 18 ms 24064 KB Output is correct
10 Correct 16 ms 23936 KB Output is correct
11 Correct 18 ms 23932 KB Output is correct
12 Correct 18 ms 23916 KB Output is correct
13 Correct 18 ms 23916 KB Output is correct
14 Correct 18 ms 23916 KB Output is correct
15 Correct 19 ms 23916 KB Output is correct
16 Correct 18 ms 23916 KB Output is correct
17 Correct 18 ms 23916 KB Output is correct
18 Correct 18 ms 24044 KB Output is correct
19 Correct 18 ms 24056 KB Output is correct
20 Correct 21 ms 23916 KB Output is correct
21 Correct 22 ms 23916 KB Output is correct
22 Correct 18 ms 24044 KB Output is correct
23 Correct 18 ms 24044 KB Output is correct
24 Correct 19 ms 24044 KB Output is correct
25 Correct 20 ms 24044 KB Output is correct
26 Correct 47 ms 28268 KB Output is correct
27 Correct 68 ms 29276 KB Output is correct
28 Correct 50 ms 28140 KB Output is correct
29 Correct 60 ms 28780 KB Output is correct
30 Correct 55 ms 28168 KB Output is correct
31 Correct 114 ms 32252 KB Output is correct
32 Correct 85 ms 32388 KB Output is correct
33 Correct 78 ms 32236 KB Output is correct
34 Correct 76 ms 32492 KB Output is correct
35 Correct 78 ms 32236 KB Output is correct
36 Correct 82 ms 32236 KB Output is correct
37 Correct 83 ms 32236 KB Output is correct
38 Correct 92 ms 32364 KB Output is correct
39 Correct 80 ms 32492 KB Output is correct
40 Correct 84 ms 32492 KB Output is correct
41 Correct 49 ms 28652 KB Output is correct
42 Correct 65 ms 29804 KB Output is correct
43 Correct 58 ms 29936 KB Output is correct
44 Correct 39 ms 28544 KB Output is correct
45 Correct 55 ms 29804 KB Output is correct
46 Correct 50 ms 28524 KB Output is correct
47 Correct 59 ms 29548 KB Output is correct
48 Correct 45 ms 29036 KB Output is correct
49 Correct 51 ms 29420 KB Output is correct
50 Correct 46 ms 28780 KB Output is correct
51 Correct 114 ms 32512 KB Output is correct
52 Correct 130 ms 33260 KB Output is correct
53 Correct 100 ms 32636 KB Output is correct
54 Correct 111 ms 33108 KB Output is correct
55 Correct 100 ms 32492 KB Output is correct

Subtask #10
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 23916 KB Output is correct
2 Correct 17 ms 23916 KB Output is correct
3 Correct 17 ms 23916 KB Output is correct
4 Correct 15 ms 23916 KB Output is correct
5 Correct 18 ms 23916 KB Output is correct
6 Correct 16 ms 23916 KB Output is correct
7 Correct 20 ms 23916 KB Output is correct
8 Correct 19 ms 23916 KB Output is correct
9 Correct 18 ms 24064 KB Output is correct
10 Correct 16 ms 23936 KB Output is correct
11 Correct 18 ms 23932 KB Output is correct
12 Correct 18 ms 23916 KB Output is correct
13 Correct 18 ms 23916 KB Output is correct
14 Correct 18 ms 23916 KB Output is correct
15 Correct 19 ms 23916 KB Output is correct
16 Correct 18 ms 23916 KB Output is correct
17 Correct 18 ms 23916 KB Output is correct
18 Correct 18 ms 24044 KB Output is correct
19 Correct 18 ms 24056 KB Output is correct
20 Correct 21 ms 23916 KB Output is correct
21 Correct 22 ms 23916 KB Output is correct
22 Correct 18 ms 24044 KB Output is correct
23 Correct 18 ms 24044 KB Output is correct
24 Correct 19 ms 24044 KB Output is correct
25 Correct 20 ms 24044 KB Output is correct
26 Correct 47 ms 28268 KB Output is correct
27 Correct 68 ms 29276 KB Output is correct
28 Correct 50 ms 28140 KB Output is correct
29 Correct 60 ms 28780 KB Output is correct
30 Correct 55 ms 28168 KB Output is correct
31 Correct 114 ms 32252 KB Output is correct
32 Correct 85 ms 32388 KB Output is correct
33 Correct 78 ms 32236 KB Output is correct
34 Correct 76 ms 32492 KB Output is correct
35 Correct 78 ms 32236 KB Output is correct
36 Correct 82 ms 32236 KB Output is correct
37 Correct 83 ms 32236 KB Output is correct
38 Correct 92 ms 32364 KB Output is correct
39 Correct 80 ms 32492 KB Output is correct
40 Correct 84 ms 32492 KB Output is correct
41 Correct 49 ms 28652 KB Output is correct
42 Correct 65 ms 29804 KB Output is correct
43 Correct 58 ms 29936 KB Output is correct
44 Correct 39 ms 28544 KB Output is correct
45 Correct 55 ms 29804 KB Output is correct
46 Correct 50 ms 28524 KB Output is correct
47 Correct 59 ms 29548 KB Output is correct
48 Correct 45 ms 29036 KB Output is correct
49 Correct 51 ms 29420 KB Output is correct
50 Correct 46 ms 28780 KB Output is correct
51 Correct 114 ms 32512 KB Output is correct
52 Correct 130 ms 33260 KB Output is correct
53 Correct 100 ms 32636 KB Output is correct
54 Correct 111 ms 33108 KB Output is correct
55 Correct 100 ms 32492 KB Output is correct
56 Execution timed out 1058 ms 110572 KB Time limit exceeded
57 Halted 0 ms 0 KB -