Submission #977499

#	Time	Username	Problem	Language	Result	Execution time	Memory
977499		Amaarsaa	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	36 / 100	1094 ms	2192 KiB

skyscraper

#include<bits/stdc++.h>

using namespace std;
using ll = long long ;
ll D[30005];
int main() {
//	freopen("moocast.in", "r", stdin);
//	freopen("moocast.out", "w", stdout);
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	ll t, n, m, ans, s, sum, x, y, r, p, i, j;
	
	cin >> m >> n;
	
	priority_queue < pair < ll, ll >, vector < pair < ll, ll >> , greater < pair < ll, ll >> > pq;
	
	ll a[n + 2], b[n + 2];
	for (i = 0; i < n; i ++) {
		cin >> a[i] >> b[i];
		D[i] = 1e18;	
	}
	D[0] = 0;
	pq.push({0, 0});
	while(!pq.empty()) {
		x = pq.top().first;
		i = pq.top().second;
		pq.pop();
		if ( x != D[i]) continue;
		if ( i == 1) {
			cout << x << endl;
			return 0;
		}
		for (j = 0; j < n; j ++) {
			if ( (abs(a[j] - a[i])) % b[i] == 0) {
				s = abs(a[j] - a[i]) / b[i];
				if (D[j] > D[i] + s) {
					D[j] = D[i] + s;
					pq.push({D[j], j});
				}
			}
		}
	}
	cout << -1 << endl;
	
}

Compilation message (stderr)

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:11:5: warning: unused variable 't' [-Wunused-variable]
   11 |  ll t, n, m, ans, s, sum, x, y, r, p, i, j;
      |     ^
skyscraper.cpp:11:14: warning: unused variable 'ans' [-Wunused-variable]
   11 |  ll t, n, m, ans, s, sum, x, y, r, p, i, j;
      |              ^~~
skyscraper.cpp:11:22: warning: unused variable 'sum' [-Wunused-variable]
   11 |  ll t, n, m, ans, s, sum, x, y, r, p, i, j;
      |                      ^~~
skyscraper.cpp:11:30: warning: unused variable 'y' [-Wunused-variable]
   11 |  ll t, n, m, ans, s, sum, x, y, r, p, i, j;
      |                              ^
skyscraper.cpp:11:33: warning: unused variable 'r' [-Wunused-variable]
   11 |  ll t, n, m, ans, s, sum, x, y, r, p, i, j;
      |                                 ^
skyscraper.cpp:11:36: warning: unused variable 'p' [-Wunused-variable]
   11 |  ll t, n, m, ans, s, sum, x, y, r, p, i, j;
      |                                    ^

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 14 / 14
• Subtask 4: 0 / 21
• Subtask 5: 0 / 43