Submission #137733

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
137733	2019-07-28T09:15:35 Z	김세빈(#3278)	RLE (BOI06_rle)	C++14	50 / 100	810 ms	143068 KB

rle

#include <bits/stdc++.h>

#define pb push_back

using namespace std;

typedef long long ll;
typedef pair <ll, ll> pll;

vector <pll> X;
vector <ll> V[2020202], A;
ll D[101010], I[101010], P[2020202];
ll n, m, s, mv;

ll cost(ll x, ll t)
{
	if(t) return ((x - 1) / n + 1) * 3;
	else return x / (n + 2) * 3 + min(x % (n + 2), 3ll);
}

void insert(ll p)
{
	ll d = D[p] % 4;
	I[p] = V[d].size();
	V[d].pb(p);
}

void erase(ll p)
{
	ll d = D[p] % 4;
	swap(V[d][I[p]], V[d].back());
	swap(I[p], I[V[d][I[p]]]);
	V[d].pop_back();
}

void change(ll &e, ll x)
{
	A.pb(e); A.pb(x); A.pb(0);
	e = x;
}

ll make(ll x, ll y, ll e)
{
	ll t, ret = 0;
	
	if(x == e){
		for(; y; ){
			t = (y >= n? n - 1 : y - 1);
			A.pb(e); A.pb(e); A.pb(t); ret += 3;
			y -= t + 1;
		}
	}
	else{
		for(; y; ){
			t = (y >= n + 2? n - 1 : y - 3);
			if(t == -2) A.pb(x), ret += 1;
			else if(t == -1) A.pb(x), A.pb(x), ret += 2;
			else if(t == 0) A.pb(x), A.pb(x), A.pb(x), ret += 3;
			else A.pb(e), A.pb(x), A.pb(t), ret += 3;
			y -= t + 3;
		}
	}
	
	return ret;
}

int main()
{
	ll i, e, a, b, c, x, y, v;
	
	scanf("%lld%lld", &n, &m);
	
	for(i=0, e=0; i<m; i++){
		scanf("%lld", &a);
		if(a == e){
			scanf("%lld%lld", &b, &c);
			if(b == e) x = e, y = c + 1;
			else if(c == 0) e = b, y = 0;
			else x = b, y = c + 3;
			i += 2;
		}
		else x = a, y = 1;
		
		if(!y) continue;
		else if(!X.empty() && X.back().first == x) X.back().second += y;
		else X.emplace_back(x, y);
	}
	
	m = X.size();
	
	mv = 0;
	
	for(i=0; i<n; i++){
		insert(i);
	}
	
	for(i=m-1; i>=0; i--){
		tie(x, y) = X[i];
		v = cost(y, 0); c = cost(y, 1) - v; s += v;
		erase(x); for(; V[mv % 4].empty(); mv++);
		if(D[x] + c > mv + 3){
			P[i] = V[mv % 4].back() + 1;
			D[x] = mv + 3;
		}
		else D[x] += c;
		insert(x);
	}
	
	for(i=0, e=0; i<m; i++){
		tie(x, y) = X[i];
		if(x == e && P[i]) change(e, P[i] - 1);
		make(x, y, e);
	}
	
	printf("%lld\n", (ll)A.size());
	
	for(i=0; i<A.size(); i++){
		printf("%lld%c", A[i], " \n"[i == A.size() - 1]);
	}
	
	return 0;
}

Compilation message

rle.cpp: In function 'int main()':
rle.cpp:117:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0; i<A.size(); i++){
           ~^~~~~~~~~
rle.cpp:118:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   printf("%lld%c", A[i], " \n"[i == A.size() - 1]);
                                ~~^~~~~~~~~~~~~~~
rle.cpp:71:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~~~~
rle.cpp:74:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld", &a);
   ~~~~~^~~~~~~~~~~~
rle.cpp:76:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld%lld", &b, &c);
    ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1

50.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	45 ms	47736 KB	Output is correct
2	Incorrect	45 ms	47736 KB	code is not the shortest
3	Correct	45 ms	47864 KB	Output is correct
4	Correct	46 ms	47864 KB	Output is correct
5	Incorrect	46 ms	47864 KB	code is not the shortest
6	Incorrect	68 ms	49392 KB	code is not the shortest
7	Incorrect	230 ms	58240 KB	code is not the shortest
8	Incorrect	291 ms	65228 KB	code is not the shortest
9	Incorrect	476 ms	87928 KB	code is not the shortest
10	Incorrect	229 ms	58200 KB	code is not the shortest
11	Incorrect	194 ms	57280 KB	code is not the shortest
12	Incorrect	338 ms	75864 KB	code is not the shortest
13	Incorrect	433 ms	71224 KB	code is not the shortest
14	Correct	172 ms	58716 KB	Output is correct
15	Correct	109 ms	53548 KB	Output is correct
16	Correct	464 ms	74136 KB	Output is correct
17	Correct	514 ms	81520 KB	Output is correct
18	Correct	537 ms	90552 KB	Output is correct
19	Correct	802 ms	130016 KB	Output is correct
20	Correct	810 ms	143068 KB	Output is correct