Submission #137774

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
137774	2019-07-28T09:33:09 Z	김세빈(#3278)	RLE (BOI06_rle)	C++14	50 / 100	789 ms	142860 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, q = V[d].back();
	swap(V[d][I[p]], V[d].back());
	swap(I[p], I[q]);
	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); if(c < 0) return 1 / 0;
		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:100:32: warning: division by zero [-Wdiv-by-zero]
   erase(x); if(c < 0) return 1 / 0;
                              ~~^~~
rle.cpp:118:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i=0; i<A.size(); i++){
           ~^~~~~~~~~
rle.cpp:119:34: 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	46 ms	47736 KB	Output is correct
2	Incorrect	47 ms	47868 KB	code is not the shortest
3	Correct	49 ms	47736 KB	Output is correct
4	Correct	47 ms	47864 KB	Output is correct
5	Incorrect	46 ms	47864 KB	code is not the shortest
6	Incorrect	68 ms	49264 KB	code is not the shortest
7	Incorrect	226 ms	58064 KB	code is not the shortest
8	Incorrect	290 ms	65236 KB	code is not the shortest
9	Incorrect	510 ms	87996 KB	code is not the shortest
10	Incorrect	248 ms	58068 KB	code is not the shortest
11	Incorrect	214 ms	57252 KB	code is not the shortest
12	Incorrect	337 ms	75944 KB	code is not the shortest
13	Incorrect	433 ms	71104 KB	code is not the shortest
14	Correct	171 ms	58716 KB	Output is correct
15	Correct	109 ms	53532 KB	Output is correct
16	Correct	479 ms	74188 KB	Output is correct
17	Correct	494 ms	81600 KB	Output is correct
18	Correct	516 ms	90244 KB	Output is correct
19	Correct	768 ms	130072 KB	Output is correct
20	Correct	789 ms	142860 KB	Output is correct