Submission #916538

#	Time	Username	Problem	Language	Result	Execution time	Memory
916538		pan	Curtains (NOI23_curtains)	C++17	24 / 100	1185 ms	21172 KiB

curtains

#include <bits/stdc++.h>
//#include "bits_stdc++.h"
#include <stdio.h>
#include <algorithm>
#include <memory.h>
#define f first
#define s second
#define mp make_pair
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define input(x) scanf("%lld", &x);
#define print(x, y) printf("%lld%c", x, y);
#define show(x) cerr << #x << " is " << x << endl;
#define show2(x,y) cerr << #x << " is " << x << " " << #y << " is " << y << endl;
#define show3(x,y,z) cerr << #x << " is " << x << " " << #y << " is " << y << " " << #z << " is " << z << endl;
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ld, ll> pd;
typedef pair<string, ll> psl;
typedef pair<ll, ll> pi;

vector<vector<ll> > leftt;
vector<ll> pointer;
bool dp[2005][2005];
int main()
{
	ll n, m, q, l ,r;
	input(n); input(m); input(q);
	leftt.resize(n+1);
	pointer.assign(n+1, 0);
	for (ll i=0; i<m; ++i)
	{
		input(l); input(r);
		leftt[r].pb(l);
	}
	for (ll i=1; i<=n; ++i) sort(leftt[i].begin(), leftt[i].end());
	for (ll i= 1; i<=n; ++i)
	{
		ll last = i;
		for (ll j=i; j<=n; ++j)
		{
			//show2(i, j);
			//show(pointer[j]);
			if (leftt[j].empty()) {dp[i][j] = false; continue;}
			while (pointer[j]<leftt[j].size()-1 && leftt[j][pointer[j]]<i) {pointer[j]++;}
			//show(leftt[j][pointer[j]]);
			if (leftt[j].size() && leftt[j][pointer[j]]>=i && leftt[j][pointer[j]]<=last) {last = j+1; dp[i][j] = true;}
			else dp[i][j] = false;

		}
	}
	while (q--)
	{
		input(l); input(r);
		if (dp[l][r]) cout << "YES" << endl;
		else cout << "NO" << endl;
	}
	
	return 0;
}

Compilation message (stderr)

curtains.cpp: In function 'int main()':
curtains.cpp:47:21: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |    while (pointer[j]<leftt[j].size()-1 && leftt[j][pointer[j]]<i) {pointer[j]++;}
curtains.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
curtains.cpp:30:2: note: in expansion of macro 'input'
   30 |  input(n); input(m); input(q);
      |  ^~~~~
curtains.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
curtains.cpp:30:12: note: in expansion of macro 'input'
   30 |  input(n); input(m); input(q);
      |            ^~~~~
curtains.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
curtains.cpp:30:22: note: in expansion of macro 'input'
   30 |  input(n); input(m); input(q);
      |                      ^~~~~
curtains.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
curtains.cpp:35:3: note: in expansion of macro 'input'
   35 |   input(l); input(r);
      |   ^~~~~
curtains.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
curtains.cpp:35:13: note: in expansion of macro 'input'
   35 |   input(l); input(r);
      |             ^~~~~
curtains.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
curtains.cpp:56:3: note: in expansion of macro 'input'
   56 |   input(l); input(r);
      |   ^~~~~
curtains.cpp:12:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define input(x) scanf("%lld", &x);
      |                  ~~~~~^~~~~~~~~~~~
curtains.cpp:56:13: note: in expansion of macro 'input'
   56 |   input(l); input(r);
      |             ^~~~~

• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 15 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36
• Subtask 6: 0 / 20