oj.uz

Submission #331365

# Submission time Handle Problem Language Result Execution time Memory
331365 2020-11-28T06:22:55 Z aloo123 Pilot (NOI19_pilot) C++14
100 / 100
 935 ms 99820 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){
		cout<<ans[i]<<"\n";
	}
 
}
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 15 ms 23916 KB Output is correct
2 Correct 16 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 16 ms 23916 KB Output is correct
6 Correct 15 ms 23916 KB Output is correct
7 Correct 17 ms 23916 KB Output is correct
8 Correct 15 ms 23916 KB Output is correct
9 Correct 17 ms 23916 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23916 KB Output is correct
2 Correct 16 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 16 ms 23916 KB Output is correct
6 Correct 15 ms 23916 KB Output is correct
7 Correct 17 ms 23916 KB Output is correct
8 Correct 15 ms 23916 KB Output is correct
9 Correct 17 ms 23916 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct
11 Correct 17 ms 23916 KB Output is correct
12 Correct 17 ms 23916 KB Output is correct
13 Correct 17 ms 23916 KB Output is correct
14 Correct 17 ms 23916 KB Output is correct
15 Correct 17 ms 23916 KB Output is correct

Subtask #3
12.0 / 12.0

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

Subtask #4
15.0 / 15.0

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

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 28396 KB Output is correct
2 Correct 63 ms 29164 KB Output is correct
3 Correct 47 ms 28140 KB Output is correct
4 Correct 59 ms 28780 KB Output is correct
5 Correct 48 ms 28140 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 32268 KB Output is correct
2 Correct 64 ms 32364 KB Output is correct
3 Correct 63 ms 32236 KB Output is correct
4 Correct 64 ms 32492 KB Output is correct
5 Correct 65 ms 32236 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 32236 KB Output is correct
2 Correct 71 ms 32236 KB Output is correct
3 Correct 68 ms 32236 KB Output is correct
4 Correct 67 ms 32492 KB Output is correct
5 Correct 70 ms 32492 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23916 KB Output is correct
2 Correct 16 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 16 ms 23916 KB Output is correct
6 Correct 15 ms 23916 KB Output is correct
7 Correct 17 ms 23916 KB Output is correct
8 Correct 15 ms 23916 KB Output is correct
9 Correct 17 ms 23916 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct
11 Correct 49 ms 28396 KB Output is correct
12 Correct 63 ms 29164 KB Output is correct
13 Correct 47 ms 28140 KB Output is correct
14 Correct 59 ms 28780 KB Output is correct
15 Correct 48 ms 28140 KB Output is correct
16 Correct 42 ms 28140 KB Output is correct
17 Correct 55 ms 29164 KB Output is correct
18 Correct 52 ms 29420 KB Output is correct
19 Correct 37 ms 28012 KB Output is correct
20 Correct 55 ms 29164 KB Output is correct
21 Correct 56 ms 28012 KB Output is correct
22 Correct 55 ms 28908 KB Output is correct
23 Correct 41 ms 28396 KB Output is correct
24 Correct 48 ms 28780 KB Output is correct
25 Correct 41 ms 28268 KB Output is correct

Subtask #9
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23916 KB Output is correct
2 Correct 16 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 16 ms 23916 KB Output is correct
6 Correct 15 ms 23916 KB Output is correct
7 Correct 17 ms 23916 KB Output is correct
8 Correct 15 ms 23916 KB Output is correct
9 Correct 17 ms 23916 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct
11 Correct 17 ms 23916 KB Output is correct
12 Correct 17 ms 23916 KB Output is correct
13 Correct 17 ms 23916 KB Output is correct
14 Correct 17 ms 23916 KB Output is correct
15 Correct 17 ms 23916 KB Output is correct
16 Correct 18 ms 23936 KB Output is correct
17 Correct 18 ms 23916 KB Output is correct
18 Correct 18 ms 23916 KB Output is correct
19 Correct 21 ms 23916 KB Output is correct
20 Correct 18 ms 23916 KB Output is correct
21 Correct 18 ms 23916 KB Output is correct
22 Correct 18 ms 23916 KB Output is correct
23 Correct 19 ms 23916 KB Output is correct
24 Correct 18 ms 23916 KB Output is correct
25 Correct 17 ms 23916 KB Output is correct
26 Correct 49 ms 28396 KB Output is correct
27 Correct 63 ms 29164 KB Output is correct
28 Correct 47 ms 28140 KB Output is correct
29 Correct 59 ms 28780 KB Output is correct
30 Correct 48 ms 28140 KB Output is correct
31 Correct 63 ms 32268 KB Output is correct
32 Correct 64 ms 32364 KB Output is correct
33 Correct 63 ms 32236 KB Output is correct
34 Correct 64 ms 32492 KB Output is correct
35 Correct 65 ms 32236 KB Output is correct
36 Correct 69 ms 32236 KB Output is correct
37 Correct 71 ms 32236 KB Output is correct
38 Correct 68 ms 32236 KB Output is correct
39 Correct 67 ms 32492 KB Output is correct
40 Correct 70 ms 32492 KB Output is correct
41 Correct 42 ms 28140 KB Output is correct
42 Correct 55 ms 29164 KB Output is correct
43 Correct 52 ms 29420 KB Output is correct
44 Correct 37 ms 28012 KB Output is correct
45 Correct 55 ms 29164 KB Output is correct
46 Correct 56 ms 28012 KB Output is correct
47 Correct 55 ms 28908 KB Output is correct
48 Correct 41 ms 28396 KB Output is correct
49 Correct 48 ms 28780 KB Output is correct
50 Correct 41 ms 28268 KB Output is correct
51 Correct 81 ms 31396 KB Output is correct
52 Correct 94 ms 31932 KB Output is correct
53 Correct 79 ms 31340 KB Output is correct
54 Correct 94 ms 31852 KB Output is correct
55 Correct 80 ms 31340 KB Output is correct

Subtask #10
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 23916 KB Output is correct
2 Correct 16 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 16 ms 23916 KB Output is correct
6 Correct 15 ms 23916 KB Output is correct
7 Correct 17 ms 23916 KB Output is correct
8 Correct 15 ms 23916 KB Output is correct
9 Correct 17 ms 23916 KB Output is correct
10 Correct 16 ms 23916 KB Output is correct
11 Correct 17 ms 23916 KB Output is correct
12 Correct 17 ms 23916 KB Output is correct
13 Correct 17 ms 23916 KB Output is correct
14 Correct 17 ms 23916 KB Output is correct
15 Correct 17 ms 23916 KB Output is correct
16 Correct 18 ms 23936 KB Output is correct
17 Correct 18 ms 23916 KB Output is correct
18 Correct 18 ms 23916 KB Output is correct
19 Correct 21 ms 23916 KB Output is correct
20 Correct 18 ms 23916 KB Output is correct
21 Correct 18 ms 23916 KB Output is correct
22 Correct 18 ms 23916 KB Output is correct
23 Correct 19 ms 23916 KB Output is correct
24 Correct 18 ms 23916 KB Output is correct
25 Correct 17 ms 23916 KB Output is correct
26 Correct 49 ms 28396 KB Output is correct
27 Correct 63 ms 29164 KB Output is correct
28 Correct 47 ms 28140 KB Output is correct
29 Correct 59 ms 28780 KB Output is correct
30 Correct 48 ms 28140 KB Output is correct
31 Correct 63 ms 32268 KB Output is correct
32 Correct 64 ms 32364 KB Output is correct
33 Correct 63 ms 32236 KB Output is correct
34 Correct 64 ms 32492 KB Output is correct
35 Correct 65 ms 32236 KB Output is correct
36 Correct 69 ms 32236 KB Output is correct
37 Correct 71 ms 32236 KB Output is correct
38 Correct 68 ms 32236 KB Output is correct
39 Correct 67 ms 32492 KB Output is correct
40 Correct 70 ms 32492 KB Output is correct
41 Correct 42 ms 28140 KB Output is correct
42 Correct 55 ms 29164 KB Output is correct
43 Correct 52 ms 29420 KB Output is correct
44 Correct 37 ms 28012 KB Output is correct
45 Correct 55 ms 29164 KB Output is correct
46 Correct 56 ms 28012 KB Output is correct
47 Correct 55 ms 28908 KB Output is correct
48 Correct 41 ms 28396 KB Output is correct
49 Correct 48 ms 28780 KB Output is correct
50 Correct 41 ms 28268 KB Output is correct
51 Correct 81 ms 31396 KB Output is correct
52 Correct 94 ms 31932 KB Output is correct
53 Correct 79 ms 31340 KB Output is correct
54 Correct 94 ms 31852 KB Output is correct
55 Correct 80 ms 31340 KB Output is correct
56 Correct 903 ms 97500 KB Output is correct
57 Correct 922 ms 98028 KB Output is correct
58 Correct 861 ms 93496 KB Output is correct
59 Correct 893 ms 95728 KB Output is correct
60 Correct 935 ms 99820 KB Output is correct