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답안 #352459

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
352459 2021-01-20T21:38:05 Z AmineWeslati Jakarta Skyscrapers (APIO15_skyscraper) C++14
100 / 100
 433 ms 118676 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 = 2e9;
const int MX = 3e4 + 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/////////////////////////

const int mxP=40;
int N,M; 
vi pos(MX),vec[MX],P(MX);

V<pair<pi,int>> adj[MX][mxP+1];

int main() {
    boost; IO();

    cin>>N>>M;
    FOR(i,0,M){
    	cin>>pos[i]>>P[i];
    	if(P[i]<=mxP) vec[pos[i]].pb(P[i]);
	}

	FOR(i,0,M) if(P[i]>mxP){
		int x=pos[i],jump=0;
		while(x+P[i]*(jump+1)<N){
			jump++;
			adj[x][0].pb({{x+P[i]*jump,0},jump});
		}
		jump=0;
		while(x-P[i]*(jump+1)>=0){
			jump++;
			adj[x][0].pb({{x-P[i]*jump,0},jump});
		}
	}


	priority_queue<pair<int,pi>,V<pair<int,pi>>,greater<pair<int,pi>>>q;
	q.push({0,{pos[0],0}});
	int dist[N][mxP+1]; FOR(i,0,N) FOR(j,0,mxP+1) dist[i][j]=INF;
	dist[pos[0]][0]=0;

	while(!q.empty()){
		int u=q.top().se.fi,p=q.top().se.se,d=q.top().fi;
		q.pop();
		if(dist[u][p]<d) continue;

		for(auto it: adj[u][p]){
			int v=it.fi.fi,pp=it.fi.se,w=it.se;
			if(dist[v][pp]>d+w){
				dist[v][pp]=d+w;
				q.push({dist[v][pp],{v,pp}});
			}
		}

		if(u+p<N){
			int v=u+p,pp=p,w=1;
			if(dist[v][pp]>d+w){
				dist[v][pp]=d+w;
				q.push({dist[v][pp],{v,pp}});
			}
			pp=0; 
			if(dist[v][pp]>d+w){
				dist[v][pp]=d+w;
				q.push({dist[v][pp],{v,pp}});
			}
		}
		if(u-p>=0){
			int v=u-p,pp=p,w=1;
			if(dist[v][pp]>d+w){
				dist[v][pp]=d+w;
				q.push({dist[v][pp],{v,pp}});
			}
			pp=0; 
			if(dist[v][pp]>d+w){
				dist[v][pp]=d+w;
				q.push({dist[v][pp],{v,pp}});
			}
		}

		for(auto pp: vec[u]){
			int v=u,w=0;
			if(dist[v][pp]>d+w){
				dist[v][pp]=d+w;
				q.push({dist[v][pp],{v,pp}});
			}
		}
	}

	int ans=dist[pos[1]][0];
	if(ans==INF) ans=-1;
	cout << ans << endl;

    

    return 0;
}

/*
(pos,power)-->(pos+-power,power) (<=sqrt(N))
(pos,power)-->(pos+-power,0) (<=sqrt(N))
(pos,0)--> (pos,power) (all powers in that pos) (<=sqrt(N))
(pos,0)-->(nw_pos,0) (>sqrt(N))
*/
//Change your approach

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 30188 KB Output is correct
2 Correct 21 ms 30188 KB Output is correct
3 Correct 21 ms 30188 KB Output is correct
4 Correct 21 ms 30188 KB Output is correct
5 Correct 21 ms 30188 KB Output is correct
6 Correct 21 ms 30060 KB Output is correct
7 Correct 23 ms 30188 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 30188 KB Output is correct
2 Correct 21 ms 30188 KB Output is correct
3 Correct 21 ms 30188 KB Output is correct
4 Correct 21 ms 30188 KB Output is correct
5 Correct 21 ms 30188 KB Output is correct
6 Correct 22 ms 30188 KB Output is correct
7 Correct 21 ms 30188 KB Output is correct
8 Correct 19 ms 30188 KB Output is correct
9 Correct 19 ms 30188 KB Output is correct
10 Correct 20 ms 30188 KB Output is correct
11 Correct 20 ms 30188 KB Output is correct
12 Correct 19 ms 30188 KB Output is correct
13 Correct 21 ms 30188 KB Output is correct
14 Correct 22 ms 30188 KB Output is correct
15 Correct 22 ms 30188 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 30188 KB Output is correct
2 Correct 21 ms 30188 KB Output is correct
3 Correct 21 ms 30188 KB Output is correct
4 Correct 21 ms 30188 KB Output is correct
5 Correct 21 ms 30188 KB Output is correct
6 Correct 21 ms 30188 KB Output is correct
7 Correct 24 ms 30184 KB Output is correct
8 Correct 23 ms 30164 KB Output is correct
9 Correct 21 ms 30188 KB Output is correct
10 Correct 21 ms 30188 KB Output is correct
11 Correct 22 ms 30188 KB Output is correct
12 Correct 24 ms 30188 KB Output is correct
13 Correct 23 ms 30188 KB Output is correct
14 Correct 22 ms 30232 KB Output is correct
15 Correct 24 ms 30188 KB Output is correct
16 Correct 23 ms 30280 KB Output is correct
17 Correct 25 ms 30444 KB Output is correct
18 Correct 22 ms 30444 KB Output is correct
19 Correct 23 ms 30572 KB Output is correct
20 Correct 22 ms 30572 KB Output is correct
21 Correct 21 ms 30188 KB Output is correct
22 Correct 21 ms 30444 KB Output is correct
23 Correct 22 ms 30444 KB Output is correct
24 Correct 24 ms 30576 KB Output is correct
25 Correct 23 ms 30572 KB Output is correct
26 Correct 22 ms 30572 KB Output is correct
27 Correct 28 ms 30720 KB Output is correct
28 Correct 27 ms 30572 KB Output is correct
29 Correct 30 ms 30572 KB Output is correct
30 Correct 24 ms 30444 KB Output is correct
31 Correct 25 ms 30828 KB Output is correct
32 Correct 26 ms 30828 KB Output is correct
33 Correct 40 ms 31340 KB Output is correct
34 Correct 34 ms 31340 KB Output is correct

Subtask #4
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 30188 KB Output is correct
2 Correct 23 ms 30188 KB Output is correct
3 Correct 21 ms 30188 KB Output is correct
4 Correct 21 ms 30188 KB Output is correct
5 Correct 25 ms 30188 KB Output is correct
6 Correct 21 ms 30188 KB Output is correct
7 Correct 21 ms 30188 KB Output is correct
8 Correct 21 ms 30188 KB Output is correct
9 Correct 25 ms 30188 KB Output is correct
10 Correct 23 ms 30316 KB Output is correct
11 Correct 25 ms 30188 KB Output is correct
12 Correct 24 ms 30188 KB Output is correct
13 Correct 21 ms 30188 KB Output is correct
14 Correct 22 ms 30188 KB Output is correct
15 Correct 21 ms 30188 KB Output is correct
16 Correct 21 ms 30188 KB Output is correct
17 Correct 23 ms 30444 KB Output is correct
18 Correct 21 ms 30444 KB Output is correct
19 Correct 21 ms 30572 KB Output is correct
20 Correct 22 ms 30572 KB Output is correct
21 Correct 21 ms 30188 KB Output is correct
22 Correct 22 ms 30444 KB Output is correct
23 Correct 22 ms 30444 KB Output is correct
24 Correct 23 ms 30572 KB Output is correct
25 Correct 22 ms 30572 KB Output is correct
26 Correct 22 ms 30572 KB Output is correct
27 Correct 22 ms 30572 KB Output is correct
28 Correct 23 ms 30572 KB Output is correct
29 Correct 30 ms 30572 KB Output is correct
30 Correct 24 ms 30444 KB Output is correct
31 Correct 25 ms 30700 KB Output is correct
32 Correct 23 ms 30828 KB Output is correct
33 Correct 34 ms 31340 KB Output is correct
34 Correct 34 ms 31340 KB Output is correct
35 Correct 33 ms 31340 KB Output is correct
36 Correct 23 ms 30444 KB Output is correct
37 Correct 38 ms 32620 KB Output is correct
38 Correct 38 ms 32236 KB Output is correct
39 Correct 39 ms 32236 KB Output is correct
40 Correct 39 ms 32364 KB Output is correct
41 Correct 44 ms 32384 KB Output is correct
42 Correct 28 ms 30700 KB Output is correct
43 Correct 26 ms 30700 KB Output is correct
44 Correct 26 ms 30700 KB Output is correct
45 Correct 45 ms 36460 KB Output is correct
46 Correct 45 ms 36460 KB Output is correct

Subtask #5
43.0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 30188 KB Output is correct
2 Correct 21 ms 30188 KB Output is correct
3 Correct 23 ms 30188 KB Output is correct
4 Correct 21 ms 30188 KB Output is correct
5 Correct 21 ms 30188 KB Output is correct
6 Correct 21 ms 30316 KB Output is correct
7 Correct 21 ms 30188 KB Output is correct
8 Correct 21 ms 30224 KB Output is correct
9 Correct 21 ms 30188 KB Output is correct
10 Correct 21 ms 30188 KB Output is correct
11 Correct 22 ms 30188 KB Output is correct
12 Correct 21 ms 30188 KB Output is correct
13 Correct 21 ms 30188 KB Output is correct
14 Correct 22 ms 30188 KB Output is correct
15 Correct 21 ms 30188 KB Output is correct
16 Correct 21 ms 30188 KB Output is correct
17 Correct 23 ms 30444 KB Output is correct
18 Correct 21 ms 30444 KB Output is correct
19 Correct 22 ms 30572 KB Output is correct
20 Correct 22 ms 30572 KB Output is correct
21 Correct 21 ms 30188 KB Output is correct
22 Correct 21 ms 30464 KB Output is correct
23 Correct 22 ms 30444 KB Output is correct
24 Correct 23 ms 30572 KB Output is correct
25 Correct 22 ms 30572 KB Output is correct
26 Correct 22 ms 30572 KB Output is correct
27 Correct 25 ms 30572 KB Output is correct
28 Correct 23 ms 30700 KB Output is correct
29 Correct 31 ms 30572 KB Output is correct
30 Correct 24 ms 30444 KB Output is correct
31 Correct 27 ms 30700 KB Output is correct
32 Correct 23 ms 30828 KB Output is correct
33 Correct 34 ms 31340 KB Output is correct
34 Correct 34 ms 31340 KB Output is correct
35 Correct 33 ms 31340 KB Output is correct
36 Correct 23 ms 30444 KB Output is correct
37 Correct 38 ms 32748 KB Output is correct
38 Correct 38 ms 32236 KB Output is correct
39 Correct 39 ms 32236 KB Output is correct
40 Correct 39 ms 32364 KB Output is correct
41 Correct 39 ms 32364 KB Output is correct
42 Correct 27 ms 30700 KB Output is correct
43 Correct 26 ms 30700 KB Output is correct
44 Correct 26 ms 30700 KB Output is correct
45 Correct 45 ms 36588 KB Output is correct
46 Correct 46 ms 36716 KB Output is correct
47 Correct 111 ms 41264 KB Output is correct
48 Correct 34 ms 35948 KB Output is correct
49 Correct 33 ms 35948 KB Output is correct
50 Correct 31 ms 36076 KB Output is correct
51 Correct 85 ms 38448 KB Output is correct
52 Correct 91 ms 38704 KB Output is correct
53 Correct 40 ms 35052 KB Output is correct
54 Correct 27 ms 34924 KB Output is correct
55 Correct 28 ms 34924 KB Output is correct
56 Correct 38 ms 35948 KB Output is correct
57 Correct 174 ms 41460 KB Output is correct
58 Correct 37 ms 35180 KB Output is correct
59 Correct 40 ms 35436 KB Output is correct
60 Correct 44 ms 36332 KB Output is correct
61 Correct 41 ms 35692 KB Output is correct
62 Correct 67 ms 39660 KB Output is correct
63 Correct 121 ms 71204 KB Output is correct
64 Correct 142 ms 84260 KB Output is correct
65 Correct 184 ms 93464 KB Output is correct
66 Correct 430 ms 118676 KB Output is correct
67 Correct 433 ms 118136 KB Output is correct