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답안 #380696

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
380696 2021-03-22T19:52:17 Z AmineWeslati Sky Walking (IOI19_walk) C++14
10 / 100
 4000 ms 591268 KB 
//Never stop trying
#include "bits/stdc++.h"
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)

typedef long long ll;
typedef string str;
typedef long double ld;
typedef pair<int, int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<pi> vpi;
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)

const int MOD = 1e9 + 7; //998244353
const ll INF = 1e18;
const int MX = 2e5 + 10;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0}; //right left down up

template<class T> using V = vector<T>;
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
ll cdiv(ll a, ll b) { return a / b + ((a ^ b) > 0 && a % b); } // divide a by b rounded up
//constexpr int log2(int x) { return 31 - __builtin_clz(x); } // floor(log2(x))

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
//mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
ll random(ll a, ll b){
    return a + rng() % (b - a + 1);
}
#ifndef LOCAL  
#define cerr if(false) cerr
#endif
#define dbg(x) cerr << #x << " : " << x << endl; 
#define dbgs(x,y) cerr << #x << " : " << x << " / " << #y << " : " << y << endl;
#define dbgv(v) cerr << #v << " : " << "[ "; for(auto it : v) cerr << it << ' '; cerr << ']' << endl;
#define here() cerr << "here" << endl;

void IO() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin); 
    freopen("output.txt", "w", stdout);
#endif
}
/////////////////////////ONLY CLEAN CODES ALLOWED/////////////////////////

#ifndef LOCAL
#include "walk.h"
#endif

int N,M; 
map<int,vpi>adj[MX];
V<ll> X;

ll weight(int u, int h, ll v, ll hh){
	return abs(X[u]-X[v])+abs(h-hh);
}

ll min_distance(vector<int> x, vector<int> h, vector<int> l, vector<int> r, vector<int> y, int s, int g) {
	N=sz(x); M=sz(l);
	X.assign(all(x));

	vi vec[N]; 
	FOR(i,0,N) vec[i].pb(0);
	FOR(i,0,M){
		vi v;
		FOR(j,l[i],r[i]+1) if(h[j]>=y[i]) 
			v.pb(j),vec[j].pb(y[i]);
		FOR(j,1,sz(v)){
			adj[v[j]][y[i]].pb({v[j-1],y[i]});
			adj[v[j-1]][y[i]].pb({v[j],y[i]});
		}
	}

	FOR(i,0,N){
		sort(all(vec[i]));
		FOR(j,1,sz(vec[i])){
			adj[i][vec[i][j-1]].pb({i,vec[i][j]});
			adj[i][vec[i][j]].pb({i,vec[i][j-1]});
		}
	}

	priority_queue<pair<ll,pi>,V<pair<ll,pi>>,greater<pair<ll,pi>>>q;
	q.push({0,{s,0}});
	map<int,ll>dist[N];
	dist[s][0]=0;

	while(!q.empty()){
		pair<ll,pi>p=q.top(); q.pop();
		ll d=p.fi; int u=p.se.fi,t=p.se.se;
		if(d>dist[u][t]) continue;
		if(!adj[u].count(t)) continue;

		for(auto it: adj[u][t]){
			int v=it.fi,tt=it.se;
			if(!dist[v].count(tt) || weight(u,t,v,tt)+d<dist[v][tt]){
				dist[v][tt]=weight(u,t,v,tt)+d;
				q.push({dist[v][tt],{v,tt}});
			}
			
		}
	}

	if(!dist[g].count(0)) return -1;
	return dist[g][0];
}	

#ifdef LOCAL
int main() {
    boost; IO();

    /*vi x={0,3,5,7,10,12,14},h={8,7,9,7,6,6,9};
    vi l={0,0,0,2,2,3,4},r={1,2,6,3,6,4,6};
    vi y={1,6,8,1,7,2,5};
    int s=1,g=5;

    cout << min_distance(x,h,l,r,y,s,g) << endl;*/

    /*vi x={0,4,5,6,9},h={6,6,6,6,6};
    vi l={3,1,0},r={4,3,2};
    vi y={1,3,6};
    int s=0,g=4;

    cout << min_distance(x,h,l,r,y,s,g) << endl;*/
    

    return 0;
}
#endif
//Change your approach

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9708 KB Output is correct
2 Correct 8 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9836 KB Output is correct
6 Correct 7 ms 9836 KB Output is correct
7 Correct 7 ms 9836 KB Output is correct
8 Correct 7 ms 9836 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 8 ms 9836 KB Output is correct
11 Correct 7 ms 9708 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 8 ms 9708 KB Output is correct
14 Correct 7 ms 9708 KB Output is correct
15 Correct 7 ms 9708 KB Output is correct
16 Correct 7 ms 9708 KB Output is correct
17 Correct 8 ms 9964 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9708 KB Output is correct
2 Correct 8 ms 9708 KB Output is correct
3 Correct 1996 ms 163948 KB Output is correct
4 Correct 1127 ms 189292 KB Output is correct
5 Correct 647 ms 124268 KB Output is correct
6 Correct 2060 ms 111532 KB Output is correct
7 Correct 600 ms 124012 KB Output is correct
8 Correct 2758 ms 208500 KB Output is correct
9 Correct 748 ms 126828 KB Output is correct
10 Correct 1759 ms 255728 KB Output is correct
11 Correct 660 ms 95980 KB Output is correct
12 Correct 328 ms 77932 KB Output is correct
13 Correct 1373 ms 226196 KB Output is correct
14 Execution timed out 4085 ms 30692 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 115 ms 27756 KB Output is correct
2 Execution timed out 4117 ms 591268 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 115 ms 27756 KB Output is correct
2 Execution timed out 4117 ms 591268 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 9708 KB Output is correct
2 Correct 8 ms 9708 KB Output is correct
3 Correct 7 ms 9708 KB Output is correct
4 Correct 7 ms 9708 KB Output is correct
5 Correct 7 ms 9836 KB Output is correct
6 Correct 7 ms 9836 KB Output is correct
7 Correct 7 ms 9836 KB Output is correct
8 Correct 7 ms 9836 KB Output is correct
9 Correct 7 ms 9708 KB Output is correct
10 Correct 8 ms 9836 KB Output is correct
11 Correct 7 ms 9708 KB Output is correct
12 Correct 7 ms 9708 KB Output is correct
13 Correct 8 ms 9708 KB Output is correct
14 Correct 7 ms 9708 KB Output is correct
15 Correct 7 ms 9708 KB Output is correct
16 Correct 7 ms 9708 KB Output is correct
17 Correct 8 ms 9964 KB Output is correct
18 Correct 7 ms 9708 KB Output is correct
19 Correct 8 ms 9708 KB Output is correct
20 Correct 1996 ms 163948 KB Output is correct
21 Correct 1127 ms 189292 KB Output is correct
22 Correct 647 ms 124268 KB Output is correct
23 Correct 2060 ms 111532 KB Output is correct
24 Correct 600 ms 124012 KB Output is correct
25 Correct 2758 ms 208500 KB Output is correct
26 Correct 748 ms 126828 KB Output is correct
27 Correct 1759 ms 255728 KB Output is correct
28 Correct 660 ms 95980 KB Output is correct
29 Correct 328 ms 77932 KB Output is correct
30 Correct 1373 ms 226196 KB Output is correct
31 Execution timed out 4085 ms 30692 KB Time limit exceeded
32 Halted 0 ms 0 KB -