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Submission #172908

# Submission time Handle Problem Language Result Execution time Memory
172908 2020-01-02T17:57:30 Z ZwariowanyMarcin Examination (JOI19_examination) C++14
100 / 100
 1569 ms 209496 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define ss(x) (int) x.size()
#define pb push_back
#define ll long long
#define cat(x) cerr << #x << " = " << x << endl
#define FOR(i, n) for(int i = 0; i < n; ++i)

using namespace std;	

const int nax = 1e5 + 111;
const int pod = (1 << 17);

int n, q;
pair<int, int> t[nax];

struct gao {
	int x, y, z, id;
	bool operator <(gao a) const {
		return z < a.z;
	}
};

vector <gao> qu;

vector <int> val[2];

int daj(int x, int k) {
	return (int) (lower_bound(val[k].begin(), val[k].end(), x) - val[k].begin()) + 1;
}

struct nod {
	nod *l, *r;
	int sum;
};

nod T[30000000];
nod *wsk = T;

nod* aloc() {
	nod *r = wsk++;
	r->sum = 0;
	return r;
}

#define mak(x) x ? x : x = aloc()

void add(int x, nod *u, int l = 0, int r = pod - 1) {
	if(l == r) {
		u->sum++;
		return;
	}
	int m = (l + r) / 2;
	if(x <= m)	
		add(x, mak(u->l), l, m);
	else
		add(x, mak(u->r), m + 1, r);
	u->sum = (u->l ? u->l->sum : 0) + (u->r ? u->r->sum : 0);
}

int query(int x, int y, nod *u, int l = 0, int r = pod - 1) {
	if(!u) return 0;
	if(x <= l && r <= y) 
		return u->sum;
	int m = (l + r) / 2;
	int res = 0;
	if(x <= m)
		res += query(x, y, u->l, l, m);
	if(m < y)
		res += query(x, y, u->r, m + 1, r);
	return res;
}

nod *root[nax];
	
void addfen(int x, int y) {
	for(int i = x; i < nax; i += i & -i) 
		add(y, root[i]);
}

int queryfen(int x, int y) {
	int res = 0;
	for(int i = x; 0 < i; i -= i & -i)
		res += query(y, pod - 1, root[i]);
	return res;
}

int qq(int x, int y) {
	return queryfen(nax - 1, y) - queryfen(x - 1, y);
}	

int ans[nax];
			
int main() {
	scanf("%d %d", &n, &q);
	for(int i = 1; i <= n; ++i) {
		scanf("%d %d", &t[i].fi, &t[i].se);
		val[0].pb(t[i].fi);
		val[1].pb(t[i].se);
	}
	
	sort(t + 1, t + n + 1, [](pair<int,int> a, pair<int,int> b) {
		return a.fi + a.se < b.fi + b.se;
	});
	
	for(int i = 1; i <= q; ++i) {
		int x, y, z;
		scanf("%d %d %d", &x, &y, &z);
		qu.pb({x, y, z, i});
	}
	
	for(int i = 0; i < 2; ++i) {
		sort(val[i].begin(), val[i].end());
		val[i].erase(unique(val[i].begin(), val[i].end()), val[i].end());
	}
	
	sort(qu.begin(), qu.end());
		
	for(int i = 1; i < nax; ++i)
		root[i] = aloc();
		
	int wsk = n;
	
	for(int i = q - 1; 0 <= i; --i) {
		while(wsk >= 1 && qu[i].z <= t[wsk].fi + t[wsk].se) {
			addfen(daj(t[wsk].fi, 0), daj(t[wsk].se, 1));
			wsk--;
		}
		ans[qu[i].id] = qq(daj(qu[i].x, 0), daj(qu[i].y, 1));
	}
	
	for(int i = 1; i <= q; ++i)
		printf("%d\n", ans[i]);
	

	return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:97:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &q);
  ~~~~~^~~~~~~~~~~~~~~~~
examination.cpp:99:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &t[i].fi, &t[i].se);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:110:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d", &x, &y, &z);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3452 KB Output is correct
2 Correct 5 ms 3448 KB Output is correct
3 Correct 5 ms 3448 KB Output is correct
4 Correct 4 ms 3484 KB Output is correct
5 Correct 5 ms 3420 KB Output is correct
6 Correct 5 ms 3448 KB Output is correct
7 Correct 23 ms 8056 KB Output is correct
8 Correct 23 ms 8028 KB Output is correct
9 Correct 23 ms 8028 KB Output is correct
10 Correct 16 ms 5140 KB Output is correct
11 Correct 17 ms 6136 KB Output is correct
12 Correct 13 ms 3704 KB Output is correct
13 Correct 24 ms 7928 KB Output is correct
14 Correct 24 ms 7924 KB Output is correct
15 Correct 23 ms 8036 KB Output is correct
16 Correct 16 ms 6136 KB Output is correct
17 Correct 15 ms 4984 KB Output is correct
18 Correct 12 ms 3740 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1411 ms 179996 KB Output is correct
2 Correct 1416 ms 182128 KB Output is correct
3 Correct 1438 ms 182352 KB Output is correct
4 Correct 551 ms 42340 KB Output is correct
5 Correct 469 ms 63660 KB Output is correct
6 Correct 273 ms 8904 KB Output is correct
7 Correct 1123 ms 182312 KB Output is correct
8 Correct 1365 ms 182240 KB Output is correct
9 Correct 929 ms 182128 KB Output is correct
10 Correct 411 ms 59748 KB Output is correct
11 Correct 502 ms 34660 KB Output is correct
12 Correct 266 ms 8420 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1411 ms 179996 KB Output is correct
2 Correct 1416 ms 182128 KB Output is correct
3 Correct 1438 ms 182352 KB Output is correct
4 Correct 551 ms 42340 KB Output is correct
5 Correct 469 ms 63660 KB Output is correct
6 Correct 273 ms 8904 KB Output is correct
7 Correct 1123 ms 182312 KB Output is correct
8 Correct 1365 ms 182240 KB Output is correct
9 Correct 929 ms 182128 KB Output is correct
10 Correct 411 ms 59748 KB Output is correct
11 Correct 502 ms 34660 KB Output is correct
12 Correct 266 ms 8420 KB Output is correct
13 Correct 1172 ms 182672 KB Output is correct
14 Correct 1448 ms 182748 KB Output is correct
15 Correct 1477 ms 182288 KB Output is correct
16 Correct 451 ms 42812 KB Output is correct
17 Correct 449 ms 63972 KB Output is correct
18 Correct 280 ms 8772 KB Output is correct
19 Correct 1192 ms 182712 KB Output is correct
20 Correct 1302 ms 182776 KB Output is correct
21 Correct 995 ms 183000 KB Output is correct
22 Correct 408 ms 59880 KB Output is correct
23 Correct 467 ms 34564 KB Output is correct
24 Correct 268 ms 8548 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3452 KB Output is correct
2 Correct 5 ms 3448 KB Output is correct
3 Correct 5 ms 3448 KB Output is correct
4 Correct 4 ms 3484 KB Output is correct
5 Correct 5 ms 3420 KB Output is correct
6 Correct 5 ms 3448 KB Output is correct
7 Correct 23 ms 8056 KB Output is correct
8 Correct 23 ms 8028 KB Output is correct
9 Correct 23 ms 8028 KB Output is correct
10 Correct 16 ms 5140 KB Output is correct
11 Correct 17 ms 6136 KB Output is correct
12 Correct 13 ms 3704 KB Output is correct
13 Correct 24 ms 7928 KB Output is correct
14 Correct 24 ms 7924 KB Output is correct
15 Correct 23 ms 8036 KB Output is correct
16 Correct 16 ms 6136 KB Output is correct
17 Correct 15 ms 4984 KB Output is correct
18 Correct 12 ms 3740 KB Output is correct
19 Correct 1411 ms 179996 KB Output is correct
20 Correct 1416 ms 182128 KB Output is correct
21 Correct 1438 ms 182352 KB Output is correct
22 Correct 551 ms 42340 KB Output is correct
23 Correct 469 ms 63660 KB Output is correct
24 Correct 273 ms 8904 KB Output is correct
25 Correct 1123 ms 182312 KB Output is correct
26 Correct 1365 ms 182240 KB Output is correct
27 Correct 929 ms 182128 KB Output is correct
28 Correct 411 ms 59748 KB Output is correct
29 Correct 502 ms 34660 KB Output is correct
30 Correct 266 ms 8420 KB Output is correct
31 Correct 1172 ms 182672 KB Output is correct
32 Correct 1448 ms 182748 KB Output is correct
33 Correct 1477 ms 182288 KB Output is correct
34 Correct 451 ms 42812 KB Output is correct
35 Correct 449 ms 63972 KB Output is correct
36 Correct 280 ms 8772 KB Output is correct
37 Correct 1192 ms 182712 KB Output is correct
38 Correct 1302 ms 182776 KB Output is correct
39 Correct 995 ms 183000 KB Output is correct
40 Correct 408 ms 59880 KB Output is correct
41 Correct 467 ms 34564 KB Output is correct
42 Correct 268 ms 8548 KB Output is correct
43 Correct 1280 ms 209308 KB Output is correct
44 Correct 1316 ms 209368 KB Output is correct
45 Correct 1569 ms 209476 KB Output is correct
46 Correct 533 ms 58740 KB Output is correct
47 Correct 490 ms 92032 KB Output is correct
48 Correct 261 ms 8536 KB Output is correct
49 Correct 1195 ms 209496 KB Output is correct
50 Correct 1084 ms 209332 KB Output is correct
51 Correct 965 ms 209208 KB Output is correct
52 Correct 467 ms 90724 KB Output is correct
53 Correct 582 ms 50080 KB Output is correct