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Submission #15872

# Submission time Handle Problem Language Result Execution time Memory
15872 2015-07-31T18:08:18 Z myungwoo Jakarta Skyscrapers (APIO15_skyscraper) C++14
0 / 100
 2 ms 4420 KB 
#include <bits/stdc++.h>
using namespace std;

#define MAXN 30005
#define pb push_back
#define mp make_pair
typedef pair<int, int> pii;

int N, M;
int D[MAXN];
set <int> A[200][200];
vector <int> doge[MAXN];

int main()
{
	for (scanf("%d%d", &N, &M);M--;){
		int b, p;
		scanf("%d%d", &b, &p); doge[b].pb(p);
	}
	for (int i=1;i<N;i++) D[i] = 2e9;
	priority_queue <pii> que;
	que.push(mp(0, 0));
	for (int i=0;i<N;i++) for (int j=1;j<200;j++) A[j][i%j].insert(i);
	while (!que.empty()){
		int q = que.top().second, d = -que.top().first; que.pop();
		if (D[q] != d) continue;
		for (int i=1;i<200;i++) A[i][q%i].erase(q);
		for (int p: doge[q]){
			if (p > 199){
				for (int i=q-p;i>=0;i-=p)
					if (D[i] > D[q]+(q-i)/p)
						D[i] = D[q]+(q-i)/p, que.push(mp(-D[i], i));
			}else{
				int m = q % p;
				for (auto it=A[p][m].begin();it!=A[p][m].end();it++){
					if (D[*it] > D[q]+abs(*it-q)/p)
						D[*it] = D[q]+abs(*it-q)/p, que.push(mp(-D[*it], *it));
				}
			}
		}
	}
	printf("%d\n", D[1] < 2e9 ? D[1] : -1);
}

Subtask #1
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4420 KB Output is correct
2 Correct 0 ms 4420 KB Output is correct
3 Incorrect 0 ms 4420 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4420 KB Output is correct
2 Correct 1 ms 4420 KB Output is correct
3 Incorrect 0 ms 4420 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4420 KB Output is correct
2 Correct 0 ms 4420 KB Output is correct
3 Incorrect 0 ms 4420 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4420 KB Output is correct
2 Correct 0 ms 4420 KB Output is correct
3 Incorrect 0 ms 4420 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4420 KB Output is correct
2 Correct 2 ms 4420 KB Output is correct
3 Incorrect 0 ms 4420 KB Output isn't correct
4 Halted 0 ms 0 KB -