#include<bits/stdc++.h>
#define fo(i,x,n) for(int i=x;i<=n;++i)
#define fi(i,x,n) for(int i=x;i>=n;--i)
#define SYNCHRONIZE ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define ll long long
#define ld long double
#define pii pair<int,int>
#define pil pair<int,ll>
#define BIT(i,mask) ((mask >> (i-1)) & 1)
#define pli pair<ll,int>
#define maxn 50005
#define pll pair<ll,ll>
#define uni(vt) vt.resize(unique(vt.begin(),vt.end()) - vt.begin());
#define DAOBIT(i,mask) ((mask ^ (1ll<<i-1)))
#define OFFBIT(i,mask) ((mask & ~(1ll << (i - 1))))
#define ONBIT(i,mask) ((mask (1ll << (i - 1))))
const int oo =1e9+7;
using namespace std;
//----------------- STRUCTURE ---------------
struct node {
int pos , power, dp;
};
struct cmp {
bool operator() (node &A ,node &B) {
return A.dp > B.dp;
}
};
//----------------- DECLARE ------------------
int n, m ,dp[maxn] , hs, bf[maxn];
pii dogs[maxn];
vector<int> vt[maxn];
priority_queue<pii,vector<pii>,greater<pii> > pq;
//----------------- FUNCTION -----------------
//----------------- MAIN PRO ------------------
int main()
{
SYNCHRONIZE;
cin >>n >>m;
fo(i,0,m-1) {
cin >> dogs[i].first >> dogs[i].second ;
vt[dogs[i].first].push_back(dogs[i].second);
}
fo(i,1,n) dp[i] = oo;
dp[dogs[0].first] = 0;
pq.push({0,dogs[0].first});
while(pq.size() > 0) {
auto [num,u] = pq.top();
pq.pop();
if(dp[u] != num) continue;
for(auto power : vt[u]) {
for(int v = 1 ; u+v*power < n ; v++) if(dp[u+v*power] > dp[u]+v) {
dp[u+v*power] = dp[u] + v;
pq.push({dp[u]+v,u+v*power});
}
for(int v = 1 ; u-v*power >= 0; ++v) if(dp[u-v*power] > dp[u] + v) {
pq.push({dp[u]+v,u-v*power});
dp[u-v*power] = dp[u] + v;
}
}
}
cout << (dp[dogs[1].first] == oo ? -1 : dp[dogs[1].first]) ;
}
Compilation message
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:54:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
54 | auto [num,u] = pq.top();
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1616 KB |
Output is correct |
2 |
Correct |
1 ms |
1616 KB |
Output is correct |
3 |
Correct |
1 ms |
1616 KB |
Output is correct |
4 |
Correct |
2 ms |
1784 KB |
Output is correct |
5 |
Correct |
1 ms |
1616 KB |
Output is correct |
6 |
Correct |
1 ms |
1780 KB |
Output is correct |
7 |
Correct |
2 ms |
1616 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1616 KB |
Output is correct |
2 |
Correct |
2 ms |
1616 KB |
Output is correct |
3 |
Correct |
2 ms |
1616 KB |
Output is correct |
4 |
Correct |
2 ms |
1616 KB |
Output is correct |
5 |
Correct |
2 ms |
1616 KB |
Output is correct |
6 |
Correct |
1 ms |
1616 KB |
Output is correct |
7 |
Correct |
2 ms |
1616 KB |
Output is correct |
8 |
Correct |
2 ms |
1480 KB |
Output is correct |
9 |
Correct |
2 ms |
1616 KB |
Output is correct |
10 |
Correct |
2 ms |
1616 KB |
Output is correct |
11 |
Correct |
2 ms |
1616 KB |
Output is correct |
12 |
Correct |
2 ms |
1616 KB |
Output is correct |
13 |
Correct |
2 ms |
1872 KB |
Output is correct |
14 |
Correct |
2 ms |
1616 KB |
Output is correct |
15 |
Correct |
2 ms |
1616 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1616 KB |
Output is correct |
2 |
Correct |
2 ms |
1616 KB |
Output is correct |
3 |
Correct |
2 ms |
1616 KB |
Output is correct |
4 |
Correct |
1 ms |
1616 KB |
Output is correct |
5 |
Correct |
2 ms |
1424 KB |
Output is correct |
6 |
Correct |
2 ms |
1784 KB |
Output is correct |
7 |
Correct |
1 ms |
1616 KB |
Output is correct |
8 |
Correct |
2 ms |
1616 KB |
Output is correct |
9 |
Correct |
2 ms |
1616 KB |
Output is correct |
10 |
Correct |
1 ms |
1616 KB |
Output is correct |
11 |
Correct |
2 ms |
1616 KB |
Output is correct |
12 |
Correct |
2 ms |
1672 KB |
Output is correct |
13 |
Correct |
2 ms |
1616 KB |
Output is correct |
14 |
Correct |
2 ms |
1784 KB |
Output is correct |
15 |
Correct |
2 ms |
1784 KB |
Output is correct |
16 |
Correct |
2 ms |
1616 KB |
Output is correct |
17 |
Correct |
2 ms |
1616 KB |
Output is correct |
18 |
Correct |
2 ms |
1552 KB |
Output is correct |
19 |
Correct |
2 ms |
1784 KB |
Output is correct |
20 |
Correct |
4 ms |
1616 KB |
Output is correct |
21 |
Correct |
2 ms |
1616 KB |
Output is correct |
22 |
Correct |
2 ms |
1616 KB |
Output is correct |
23 |
Correct |
2 ms |
1616 KB |
Output is correct |
24 |
Correct |
2 ms |
1616 KB |
Output is correct |
25 |
Correct |
2 ms |
1692 KB |
Output is correct |
26 |
Correct |
4 ms |
1616 KB |
Output is correct |
27 |
Correct |
4 ms |
1616 KB |
Output is correct |
28 |
Incorrect |
2 ms |
1616 KB |
Output isn't correct |
29 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1616 KB |
Output is correct |
2 |
Correct |
2 ms |
1616 KB |
Output is correct |
3 |
Correct |
1 ms |
1616 KB |
Output is correct |
4 |
Correct |
2 ms |
1616 KB |
Output is correct |
5 |
Correct |
2 ms |
1784 KB |
Output is correct |
6 |
Correct |
2 ms |
1616 KB |
Output is correct |
7 |
Correct |
1 ms |
1616 KB |
Output is correct |
8 |
Correct |
2 ms |
1616 KB |
Output is correct |
9 |
Correct |
2 ms |
1616 KB |
Output is correct |
10 |
Correct |
1 ms |
1616 KB |
Output is correct |
11 |
Correct |
2 ms |
1616 KB |
Output is correct |
12 |
Correct |
2 ms |
1616 KB |
Output is correct |
13 |
Correct |
2 ms |
1616 KB |
Output is correct |
14 |
Correct |
3 ms |
1616 KB |
Output is correct |
15 |
Correct |
2 ms |
1616 KB |
Output is correct |
16 |
Correct |
2 ms |
1616 KB |
Output is correct |
17 |
Correct |
2 ms |
1644 KB |
Output is correct |
18 |
Correct |
2 ms |
1616 KB |
Output is correct |
19 |
Correct |
2 ms |
1456 KB |
Output is correct |
20 |
Correct |
4 ms |
1616 KB |
Output is correct |
21 |
Correct |
2 ms |
1672 KB |
Output is correct |
22 |
Correct |
2 ms |
1616 KB |
Output is correct |
23 |
Correct |
3 ms |
1616 KB |
Output is correct |
24 |
Correct |
2 ms |
1616 KB |
Output is correct |
25 |
Correct |
3 ms |
1616 KB |
Output is correct |
26 |
Correct |
3 ms |
1616 KB |
Output is correct |
27 |
Correct |
4 ms |
1628 KB |
Output is correct |
28 |
Incorrect |
2 ms |
1616 KB |
Output isn't correct |
29 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
1616 KB |
Output is correct |
2 |
Correct |
1 ms |
1616 KB |
Output is correct |
3 |
Correct |
2 ms |
1616 KB |
Output is correct |
4 |
Correct |
2 ms |
1616 KB |
Output is correct |
5 |
Correct |
2 ms |
1616 KB |
Output is correct |
6 |
Correct |
1 ms |
1616 KB |
Output is correct |
7 |
Correct |
1 ms |
1616 KB |
Output is correct |
8 |
Correct |
1 ms |
1616 KB |
Output is correct |
9 |
Correct |
1 ms |
1628 KB |
Output is correct |
10 |
Correct |
2 ms |
1616 KB |
Output is correct |
11 |
Correct |
2 ms |
1616 KB |
Output is correct |
12 |
Correct |
2 ms |
1616 KB |
Output is correct |
13 |
Correct |
2 ms |
1616 KB |
Output is correct |
14 |
Correct |
2 ms |
1616 KB |
Output is correct |
15 |
Correct |
2 ms |
1616 KB |
Output is correct |
16 |
Correct |
2 ms |
1784 KB |
Output is correct |
17 |
Correct |
2 ms |
1616 KB |
Output is correct |
18 |
Correct |
2 ms |
1616 KB |
Output is correct |
19 |
Correct |
2 ms |
1784 KB |
Output is correct |
20 |
Correct |
5 ms |
1616 KB |
Output is correct |
21 |
Correct |
2 ms |
1616 KB |
Output is correct |
22 |
Correct |
2 ms |
1616 KB |
Output is correct |
23 |
Correct |
2 ms |
1616 KB |
Output is correct |
24 |
Correct |
2 ms |
1616 KB |
Output is correct |
25 |
Correct |
2 ms |
1616 KB |
Output is correct |
26 |
Correct |
5 ms |
1616 KB |
Output is correct |
27 |
Correct |
4 ms |
1616 KB |
Output is correct |
28 |
Incorrect |
2 ms |
1616 KB |
Output isn't correct |
29 |
Halted |
0 ms |
0 KB |
- |