/*
Coded by thegamercoder
Happy Competition and Hacking
*/
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#define M_PI 3.14159265358979323846
#define FILER 0
using ll = long long;
using ull = unsigned long long;
using ld = long double;
const ll MOD = pow(10, 9) + 7;
const ll INFL = 0x3f3f3f3f3f3f3f3f;
const ull INFUL = 0x3f3f3f3f3f3f3f3f;
const ll INFT = 0x3f3f3f3f;
const ll MAX = 401;
const ll MODD = 998244353;
const ll BL = 1;
const double EPS = 1e-10;
#define V vector
#define pll pair<ll, ll>
#define pull2 pair<ull,ull>
#define MS multiset
#define M map
#define Q queue
#define PQ priority_queue
#define IOF ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define FOR(typ,i,a,b,c) for(typ i = a; i < b; i += c)
#define FORR(typ,i,a,b,c) for(typ i = a; i > b; i -= c)
#define FORA(a,i) for(auto i : a)
#define FORAE(a,i) for(auto &i : a)
#define all(v) v.begin(),v.end()
#define sorta(a) sort(all(a))
#define sortd(a) sort(all(a), greater<ll>())
#define setp(x) setprecision(x)<<fixed
#define RET return
#define log(a,b) log(b)/log(a)
#define WH(s) while(s)
#define WHI(t) WH(t--)
#define YES cout<<"YES"<<endl;
#define NO cout<<"NO"<<endl;
#define Yes cout<<"Yes"<<endl;
#define No cout<<"No"<<endl;
#define YESNO(s) cout<<(s?"YES":"NO")<<endl;
#define YesNo(s) cout<<(s?"Yes":"No")<<endl;
#define TYP 0
using namespace std;
ll n, m, p;
V<ll> d, b;
V<V<ll>> fr;
void solve()
{
cin >> n >> m;
fr.resize(n); d.resize(n, INFL); b.resize(m);
FOR(ll, i, 0, m, 1)cin >> b[i] >> p, fr[b[i]].push_back(p);
PQ<pll, V<pll>, greater<pll>> pq;
d[b[0]] = 0;
pq.push({ 0,b[0] });
WH(!pq.empty())
{
auto [du, u] = pq.top(); pq.pop();
if (du != d[u])continue;
FORAE(fr[u], p)
{
ll dist = 1;
for (ll v = u + p; v < n; v += p, dist++)
if (d[v] > d[u] + dist)d[v] = d[u] + dist, pq.push({ d[v],v });
dist = 1;
for (ll v = u - p; v >= 0; v -= p, dist++)
if (d[v] > d[u] + dist)d[v] = d[u] + dist, pq.push({ d[v],v });
}
}
cout << (d[b[1]] == INFL ? -1 : d[b[1]]) << endl;
}
void init()
{
if (FILER)
{
freopen("pump.in", "r", stdin);
freopen("pump.out", "w", stdout);
}
}
void handle()
{
init();
ll t = 1;
if (TYP)cin >> t;
WHI(t)solve();
}
int main()
{
IOF
handle();
RET 0;
}
Compilation message
skyscraper.cpp: In function 'void solve()':
skyscraper.cpp:64:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
64 | auto [du, u] = pq.top(); pq.pop();
| ^
skyscraper.cpp: In function 'void init()':
skyscraper.cpp:84:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
84 | freopen("pump.in", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:85:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
85 | freopen("pump.out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
344 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
1 ms |
500 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
4 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
604 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
4 ms |
348 KB |
Output is correct |
27 |
Correct |
4 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
2 ms |
860 KB |
Output is correct |
30 |
Correct |
1 ms |
604 KB |
Output is correct |
31 |
Correct |
1 ms |
604 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
2 ms |
860 KB |
Output is correct |
34 |
Correct |
3 ms |
856 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
344 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
456 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
6 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
600 KB |
Output is correct |
22 |
Correct |
1 ms |
604 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
608 KB |
Output is correct |
25 |
Correct |
1 ms |
608 KB |
Output is correct |
26 |
Correct |
4 ms |
352 KB |
Output is correct |
27 |
Correct |
4 ms |
584 KB |
Output is correct |
28 |
Correct |
1 ms |
600 KB |
Output is correct |
29 |
Correct |
2 ms |
860 KB |
Output is correct |
30 |
Correct |
1 ms |
608 KB |
Output is correct |
31 |
Correct |
2 ms |
612 KB |
Output is correct |
32 |
Correct |
1 ms |
612 KB |
Output is correct |
33 |
Correct |
2 ms |
860 KB |
Output is correct |
34 |
Correct |
2 ms |
864 KB |
Output is correct |
35 |
Correct |
5 ms |
1372 KB |
Output is correct |
36 |
Correct |
2 ms |
616 KB |
Output is correct |
37 |
Correct |
7 ms |
1116 KB |
Output is correct |
38 |
Correct |
6 ms |
1624 KB |
Output is correct |
39 |
Correct |
6 ms |
1628 KB |
Output is correct |
40 |
Correct |
6 ms |
1628 KB |
Output is correct |
41 |
Correct |
6 ms |
1488 KB |
Output is correct |
42 |
Correct |
51 ms |
1240 KB |
Output is correct |
43 |
Correct |
50 ms |
1240 KB |
Output is correct |
44 |
Correct |
51 ms |
1296 KB |
Output is correct |
45 |
Correct |
5 ms |
1628 KB |
Output is correct |
46 |
Correct |
6 ms |
1628 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
1 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
344 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
372 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
4 ms |
604 KB |
Output is correct |
21 |
Correct |
1 ms |
348 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
604 KB |
Output is correct |
25 |
Correct |
1 ms |
604 KB |
Output is correct |
26 |
Correct |
4 ms |
348 KB |
Output is correct |
27 |
Correct |
3 ms |
600 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
2 ms |
860 KB |
Output is correct |
30 |
Correct |
1 ms |
856 KB |
Output is correct |
31 |
Correct |
1 ms |
600 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
3 ms |
860 KB |
Output is correct |
34 |
Correct |
2 ms |
860 KB |
Output is correct |
35 |
Correct |
5 ms |
1372 KB |
Output is correct |
36 |
Correct |
1 ms |
600 KB |
Output is correct |
37 |
Correct |
4 ms |
1116 KB |
Output is correct |
38 |
Correct |
6 ms |
1680 KB |
Output is correct |
39 |
Correct |
6 ms |
1624 KB |
Output is correct |
40 |
Correct |
6 ms |
1628 KB |
Output is correct |
41 |
Correct |
6 ms |
1628 KB |
Output is correct |
42 |
Correct |
51 ms |
1308 KB |
Output is correct |
43 |
Correct |
50 ms |
1368 KB |
Output is correct |
44 |
Correct |
59 ms |
1240 KB |
Output is correct |
45 |
Correct |
6 ms |
1628 KB |
Output is correct |
46 |
Correct |
5 ms |
1648 KB |
Output is correct |
47 |
Correct |
13 ms |
2644 KB |
Output is correct |
48 |
Correct |
4 ms |
1884 KB |
Output is correct |
49 |
Correct |
4 ms |
2136 KB |
Output is correct |
50 |
Correct |
3 ms |
1884 KB |
Output is correct |
51 |
Correct |
20 ms |
4560 KB |
Output is correct |
52 |
Correct |
24 ms |
3828 KB |
Output is correct |
53 |
Correct |
11 ms |
3544 KB |
Output is correct |
54 |
Correct |
2 ms |
1760 KB |
Output is correct |
55 |
Correct |
2 ms |
1760 KB |
Output is correct |
56 |
Correct |
720 ms |
3412 KB |
Output is correct |
57 |
Correct |
38 ms |
6856 KB |
Output is correct |
58 |
Correct |
695 ms |
2272 KB |
Output is correct |
59 |
Correct |
714 ms |
2396 KB |
Output is correct |
60 |
Correct |
691 ms |
2392 KB |
Output is correct |
61 |
Correct |
662 ms |
2524 KB |
Output is correct |
62 |
Correct |
7 ms |
2908 KB |
Output is correct |
63 |
Correct |
26 ms |
4360 KB |
Output is correct |
64 |
Correct |
26 ms |
6868 KB |
Output is correct |
65 |
Correct |
34 ms |
7888 KB |
Output is correct |
66 |
Correct |
44 ms |
7376 KB |
Output is correct |
67 |
Correct |
44 ms |
8140 KB |
Output is correct |