#include"bits/stdc++.h"
using namespace std;
#define int long long
#define mp make_pair
#define pii pair<int,int>
vector<pair<pii,int> > adjl[30000][180];//position, power, weight... if power==179, then it's dummy
bool used[30000][180];
int dist[30000][180],a,b,c;
priority_queue<pair<int,pii>,vector<pair<int,pii> >, greater<pair<int,pii> > > dijk;
//weight, pos, power
int32_t main(){
ios_base::sync_with_stdio(false);cin.tie(0);
int n,m,s,d,start,end;
cin>>n>>m;//m doges, n buildings
for(int x=0;x<n;x++){
for(int y=0;y<179;y++){
adjl[x][y].emplace_back(mp(x,179),0);
dist[x][y]=LLONG_MAX;
if(y>0){
if(x+y<n)adjl[x][y].emplace_back(mp(x+y,y),1);
if(x-y>=0)adjl[x][y].emplace_back(mp(x-y,y),1);
}
}
dist[x][179]=LLONG_MAX;
}
for(int x=0;x<m;x++){
cin>>s>>d;//position s, power d
if(x==0)start=s;
else if(x==1)end=s;
if((d*d)>=n){
for(int i=1;i<=n;i++){
if(s-(d*i)>=0){
adjl[s][179].emplace_back(mp(s-(d*i),179),i);
}else if(s+(d*i)>=n)break;
if(s+(d*i)<n){
adjl[s][179].emplace_back(mp(s+(d*i),179),i);
}
}
}else{
adjl[s][179].emplace_back(mp(s,d),0);
/*if(used[s][d]==false){
for(int i=1;i<=n;i++){
if(s-(d*i)>=0){
adjl[s-(d*i)][d].emplace_back(mp(s-(d*i)+d,d),1);
adjl[s-(d*i)+d][d].emplace_back(mp(s-(d*i),d),1);
}else if(s+(d*i)>=n)break;
if(s+(d*i)<n){
adjl[s+(d*i)][d].emplace_back(mp(s+(d*i)-d,d),1);
adjl[s+(d*i)-d][d].emplace_back(mp(s+(d*i),d),1);
}
}
}*/
}
}
dijk.emplace(0,mp(start,179));//pos, power...
dist[start][179]=0;
while(!dijk.empty()){
c=dijk.top().first;
a=dijk.top().second.first;
b=dijk.top().second.second;
if(a==end){
cout<<c;
return 0;
}
dijk.pop();
for(int i=0;i<adjl[a][b].size();i++){
if(dist[adjl[a][b][i].first.first][adjl[a][b][i].first.second]>c+adjl[a][b][i].second){
dist[adjl[a][b][i].first.first][adjl[a][b][i].first.second]=c+adjl[a][b][i].second;
dijk.emplace(c+adjl[a][b][i].second,adjl[a][b][i].first );
}
}
}
if(dist[end][179]==LLONG_MAX)cout<<"-1";
else cout<<dist[end][179];
return 0;
}
/*
*/
Compilation message
skyscraper.cpp: In function 'int32_t main()':
skyscraper.cpp:72:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<adjl[a][b].size();i++){
~^~~~~~~~~~~~~~~~~~
skyscraper.cpp:61:21: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
dist[start][179]=0;
~~~~~~~~~~~~~~~~^~
skyscraper.cpp:79:21: warning: 'end' may be used uninitialized in this function [-Wmaybe-uninitialized]
if(dist[end][179]==LLONG_MAX)cout<<"-1";
~~~~~~~~~~~~~^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
87 ms |
127224 KB |
Output is correct |
2 |
Correct |
76 ms |
127096 KB |
Output is correct |
3 |
Correct |
77 ms |
127224 KB |
Output is correct |
4 |
Correct |
79 ms |
127224 KB |
Output is correct |
5 |
Correct |
79 ms |
127184 KB |
Output is correct |
6 |
Correct |
79 ms |
127224 KB |
Output is correct |
7 |
Correct |
76 ms |
127224 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
81 ms |
127224 KB |
Output is correct |
2 |
Correct |
86 ms |
127096 KB |
Output is correct |
3 |
Correct |
79 ms |
127224 KB |
Output is correct |
4 |
Correct |
79 ms |
127224 KB |
Output is correct |
5 |
Correct |
86 ms |
127224 KB |
Output is correct |
6 |
Correct |
79 ms |
127224 KB |
Output is correct |
7 |
Correct |
86 ms |
127224 KB |
Output is correct |
8 |
Correct |
80 ms |
127480 KB |
Output is correct |
9 |
Correct |
77 ms |
127788 KB |
Output is correct |
10 |
Correct |
80 ms |
128248 KB |
Output is correct |
11 |
Correct |
80 ms |
128248 KB |
Output is correct |
12 |
Correct |
89 ms |
128376 KB |
Output is correct |
13 |
Correct |
77 ms |
128248 KB |
Output is correct |
14 |
Correct |
78 ms |
128376 KB |
Output is correct |
15 |
Correct |
78 ms |
128376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
77 ms |
127224 KB |
Output is correct |
2 |
Correct |
82 ms |
127352 KB |
Output is correct |
3 |
Correct |
84 ms |
127224 KB |
Output is correct |
4 |
Correct |
79 ms |
127224 KB |
Output is correct |
5 |
Correct |
84 ms |
127196 KB |
Output is correct |
6 |
Correct |
78 ms |
127224 KB |
Output is correct |
7 |
Correct |
79 ms |
127228 KB |
Output is correct |
8 |
Correct |
79 ms |
127480 KB |
Output is correct |
9 |
Correct |
81 ms |
127608 KB |
Output is correct |
10 |
Correct |
88 ms |
128248 KB |
Output is correct |
11 |
Correct |
82 ms |
128376 KB |
Output is correct |
12 |
Correct |
84 ms |
128376 KB |
Output is correct |
13 |
Correct |
80 ms |
128252 KB |
Output is correct |
14 |
Correct |
80 ms |
128376 KB |
Output is correct |
15 |
Correct |
81 ms |
128376 KB |
Output is correct |
16 |
Correct |
82 ms |
130040 KB |
Output is correct |
17 |
Correct |
98 ms |
141560 KB |
Output is correct |
18 |
Correct |
129 ms |
162296 KB |
Output is correct |
19 |
Correct |
137 ms |
167548 KB |
Output is correct |
20 |
Correct |
138 ms |
167544 KB |
Output is correct |
21 |
Correct |
87 ms |
134160 KB |
Output is correct |
22 |
Correct |
129 ms |
163064 KB |
Output is correct |
23 |
Correct |
132 ms |
159224 KB |
Output is correct |
24 |
Correct |
136 ms |
165656 KB |
Output is correct |
25 |
Correct |
140 ms |
167672 KB |
Output is correct |
26 |
Correct |
148 ms |
167800 KB |
Output is correct |
27 |
Correct |
140 ms |
167672 KB |
Output is correct |
28 |
Correct |
143 ms |
167800 KB |
Output is correct |
29 |
Correct |
176 ms |
167672 KB |
Output is correct |
30 |
Correct |
144 ms |
167544 KB |
Output is correct |
31 |
Correct |
155 ms |
167800 KB |
Output is correct |
32 |
Correct |
154 ms |
168056 KB |
Output is correct |
33 |
Correct |
166 ms |
169208 KB |
Output is correct |
34 |
Correct |
162 ms |
169168 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
80 ms |
127224 KB |
Output is correct |
2 |
Correct |
78 ms |
127100 KB |
Output is correct |
3 |
Correct |
91 ms |
127188 KB |
Output is correct |
4 |
Correct |
87 ms |
127224 KB |
Output is correct |
5 |
Correct |
80 ms |
127224 KB |
Output is correct |
6 |
Correct |
79 ms |
127224 KB |
Output is correct |
7 |
Correct |
78 ms |
127236 KB |
Output is correct |
8 |
Correct |
77 ms |
127480 KB |
Output is correct |
9 |
Correct |
80 ms |
127608 KB |
Output is correct |
10 |
Correct |
78 ms |
128220 KB |
Output is correct |
11 |
Correct |
83 ms |
128248 KB |
Output is correct |
12 |
Correct |
103 ms |
128376 KB |
Output is correct |
13 |
Correct |
91 ms |
128248 KB |
Output is correct |
14 |
Correct |
92 ms |
128376 KB |
Output is correct |
15 |
Correct |
98 ms |
128280 KB |
Output is correct |
16 |
Correct |
98 ms |
130168 KB |
Output is correct |
17 |
Correct |
128 ms |
141432 KB |
Output is correct |
18 |
Correct |
144 ms |
162296 KB |
Output is correct |
19 |
Correct |
160 ms |
167672 KB |
Output is correct |
20 |
Correct |
146 ms |
167544 KB |
Output is correct |
21 |
Correct |
88 ms |
133884 KB |
Output is correct |
22 |
Correct |
127 ms |
163064 KB |
Output is correct |
23 |
Correct |
131 ms |
159352 KB |
Output is correct |
24 |
Correct |
145 ms |
165752 KB |
Output is correct |
25 |
Correct |
141 ms |
167672 KB |
Output is correct |
26 |
Correct |
144 ms |
167724 KB |
Output is correct |
27 |
Correct |
153 ms |
167800 KB |
Output is correct |
28 |
Correct |
148 ms |
167868 KB |
Output is correct |
29 |
Correct |
169 ms |
167672 KB |
Output is correct |
30 |
Correct |
144 ms |
167544 KB |
Output is correct |
31 |
Correct |
154 ms |
167672 KB |
Output is correct |
32 |
Correct |
150 ms |
168056 KB |
Output is correct |
33 |
Correct |
182 ms |
169208 KB |
Output is correct |
34 |
Correct |
171 ms |
169168 KB |
Output is correct |
35 |
Correct |
133 ms |
158072 KB |
Output is correct |
36 |
Correct |
114 ms |
148856 KB |
Output is correct |
37 |
Correct |
172 ms |
170488 KB |
Output is correct |
38 |
Correct |
154 ms |
171128 KB |
Output is correct |
39 |
Correct |
151 ms |
171000 KB |
Output is correct |
40 |
Correct |
152 ms |
171000 KB |
Output is correct |
41 |
Correct |
160 ms |
171264 KB |
Output is correct |
42 |
Correct |
153 ms |
168824 KB |
Output is correct |
43 |
Correct |
144 ms |
168692 KB |
Output is correct |
44 |
Correct |
143 ms |
168700 KB |
Output is correct |
45 |
Correct |
194 ms |
179308 KB |
Output is correct |
46 |
Correct |
171 ms |
179192 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
77 ms |
127224 KB |
Output is correct |
2 |
Correct |
76 ms |
127096 KB |
Output is correct |
3 |
Correct |
79 ms |
127256 KB |
Output is correct |
4 |
Correct |
77 ms |
127224 KB |
Output is correct |
5 |
Correct |
89 ms |
127224 KB |
Output is correct |
6 |
Correct |
79 ms |
127352 KB |
Output is correct |
7 |
Correct |
87 ms |
127224 KB |
Output is correct |
8 |
Correct |
79 ms |
127480 KB |
Output is correct |
9 |
Correct |
80 ms |
127608 KB |
Output is correct |
10 |
Correct |
80 ms |
128248 KB |
Output is correct |
11 |
Correct |
79 ms |
128248 KB |
Output is correct |
12 |
Correct |
80 ms |
128248 KB |
Output is correct |
13 |
Correct |
88 ms |
128376 KB |
Output is correct |
14 |
Correct |
80 ms |
128376 KB |
Output is correct |
15 |
Correct |
80 ms |
128376 KB |
Output is correct |
16 |
Correct |
84 ms |
130040 KB |
Output is correct |
17 |
Correct |
110 ms |
141432 KB |
Output is correct |
18 |
Correct |
134 ms |
162296 KB |
Output is correct |
19 |
Correct |
136 ms |
167544 KB |
Output is correct |
20 |
Correct |
137 ms |
167544 KB |
Output is correct |
21 |
Correct |
89 ms |
133880 KB |
Output is correct |
22 |
Correct |
130 ms |
163064 KB |
Output is correct |
23 |
Correct |
128 ms |
159352 KB |
Output is correct |
24 |
Correct |
140 ms |
165752 KB |
Output is correct |
25 |
Correct |
149 ms |
167672 KB |
Output is correct |
26 |
Correct |
152 ms |
167712 KB |
Output is correct |
27 |
Correct |
145 ms |
167800 KB |
Output is correct |
28 |
Correct |
165 ms |
167800 KB |
Output is correct |
29 |
Correct |
177 ms |
167672 KB |
Output is correct |
30 |
Correct |
148 ms |
167544 KB |
Output is correct |
31 |
Correct |
170 ms |
167672 KB |
Output is correct |
32 |
Correct |
142 ms |
167928 KB |
Output is correct |
33 |
Correct |
172 ms |
169296 KB |
Output is correct |
34 |
Correct |
163 ms |
169296 KB |
Output is correct |
35 |
Correct |
142 ms |
157816 KB |
Output is correct |
36 |
Correct |
111 ms |
148752 KB |
Output is correct |
37 |
Correct |
148 ms |
170488 KB |
Output is correct |
38 |
Correct |
156 ms |
171256 KB |
Output is correct |
39 |
Correct |
152 ms |
171000 KB |
Output is correct |
40 |
Correct |
150 ms |
171000 KB |
Output is correct |
41 |
Correct |
154 ms |
171128 KB |
Output is correct |
42 |
Correct |
149 ms |
168824 KB |
Output is correct |
43 |
Correct |
152 ms |
168696 KB |
Output is correct |
44 |
Correct |
144 ms |
168700 KB |
Output is correct |
45 |
Correct |
186 ms |
179312 KB |
Output is correct |
46 |
Correct |
161 ms |
179192 KB |
Output is correct |
47 |
Runtime error |
252 ms |
262144 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
48 |
Halted |
0 ms |
0 KB |
- |