#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define SIZE 1024*128
#define INF 1000000001
#define INFL 1000000000000000LL
struct T{
int x,y,i;
bool operator<(const T&q)const{
if(x!=q.x)return x<q.x;
if(y!=q.y)return y<q.y;
return i<q.i;
}
};
struct segtree{
vector<pair<int,int>>seg[SIZE*2];
int sz,cx[SIZE],pt[SIZE*2];
void init(int n){
sz=1;
while(sz<n)sz*=2;
for(int i=0;i<sz*2;i++)seg[i].clear();
for(int i=0;i<sz;i++)cx[i]=INF;
for(int i=0;i<sz*2;i++)pt[i]=0;
}
void put(vector<T>q){
for(int i=0;i<q.size();i++){
cx[i]=q[i].x;
seg[i+sz-1].push_back(pair<int,int>(q[i].y,q[i].i));
}
}
void build(int l,int r,int k){
if(l==r)return;
build(l,(l+r-1)/2,k*2+1);
build((l+r+1)/2,r,k*2+2);
seg[k].resize(seg[k*2+1].size()+seg[k*2+2].size());
merge(seg[k*2+1].begin(),seg[k*2+1].end(),seg[k*2+2].begin(),seg[k*2+2].end(),seg[k].begin());
}
void query(int x,int y,int l,int r,int k,vector<int>&res){
if(cx[r]<=x){
while(pt[k]<seg[k].size()&&seg[k][pt[k]].first<=y){
res.push_back(seg[k][pt[k]].second);
pt[k]++;
}
return;
}
if(x<cx[l])return;
query(x,y,l,(l+r-1)/2,k*2+1,res);
query(x,y,(l+r+1)/2,r,k*2+2,res);
}
};
int main(void){
int n,m;
ll ans=INFL;
scanf("%d%d",&n,&m);
vector<int>t(m),l(m),r(m);
vector<ll>c(m),d(m);
vector<T>p(m);
vector<bool>pushed(m);
static segtree seg;
seg.init(m);
for(int i=0;i<m;i++){
scanf("%d%d%d%lld",&t[i],&l[i],&r[i],&c[i]);
p[i]=(T{l[i]-t[i],l[i]+t[i],i});
}
sort(p.begin(),p.end());
seg.put(p);
seg.build(0,seg.sz-1,0);
priority_queue<pair<ll,int>,vector<pair<ll,int> >,greater<pair<ll,int> > >dik;
for(int i=0;i<m;i++){
pushed[i]=false;
d[i]=INFL;
if(l[i]==1){
d[i]=c[i];
dik.push(pair<ll,int>(c[i],i));
pushed[i]=true;
}
}
while(!dik.empty()){
int v=dik.top().second;
ll dis=dik.top().first;
dik.pop();
vector<int>lis;
lis.clear();
seg.query(r[v]+1-t[v],r[v]+1+t[v],0,seg.sz-1,0,lis);
for(int i=0;i<lis.size();i++){
int u=lis[i];
if(!pushed[u]){
d[u]=dis+c[u];
dik.push(pair<ll,int>(d[u],u));
pushed[u]=true;
}
}
}
for(int i=0;i<m;i++){
if(r[i]==n)ans=min(ans,d[i]);
}
if(ans==INFL)printf("-1\n");
else printf("%lld\n",ans);
}
Compilation message
code1.cpp: In member function 'void segtree::put(std::vector<T>)':
code1.cpp:26:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<q.size();i++){
~^~~~~~~~~
code1.cpp: In member function 'void segtree::query(int, int, int, int, int, std::vector<int>&)':
code1.cpp:40:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(pt[k]<seg[k].size()&&seg[k][pt[k]].first<=y){
~~~~~^~~~~~~~~~~~~~
code1.cpp: In function 'int main()':
code1.cpp:85:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<lis.size();i++){
~^~~~~~~~~~~
code1.cpp:54:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&n,&m);
~~~~~^~~~~~~~~~~~~~
code1.cpp:62:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d%lld",&t[i],&l[i],&r[i],&c[i]);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
139 ms |
30436 KB |
Output is correct |
2 |
Correct |
113 ms |
30180 KB |
Output is correct |
3 |
Correct |
138 ms |
31588 KB |
Output is correct |
4 |
Correct |
143 ms |
31332 KB |
Output is correct |
5 |
Correct |
159 ms |
33632 KB |
Output is correct |
6 |
Correct |
131 ms |
30796 KB |
Output is correct |
7 |
Correct |
129 ms |
30664 KB |
Output is correct |
8 |
Correct |
110 ms |
30180 KB |
Output is correct |
9 |
Correct |
107 ms |
29924 KB |
Output is correct |
10 |
Correct |
98 ms |
29924 KB |
Output is correct |
11 |
Correct |
165 ms |
33564 KB |
Output is correct |
12 |
Correct |
174 ms |
33764 KB |
Output is correct |
13 |
Correct |
197 ms |
33124 KB |
Output is correct |
14 |
Correct |
187 ms |
33120 KB |
Output is correct |
15 |
Correct |
153 ms |
30816 KB |
Output is correct |
16 |
Correct |
153 ms |
30796 KB |
Output is correct |
17 |
Correct |
144 ms |
30688 KB |
Output is correct |
18 |
Correct |
157 ms |
33380 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
6528 KB |
Output is correct |
2 |
Correct |
8 ms |
6528 KB |
Output is correct |
3 |
Correct |
8 ms |
6528 KB |
Output is correct |
4 |
Correct |
8 ms |
6528 KB |
Output is correct |
5 |
Correct |
9 ms |
6528 KB |
Output is correct |
6 |
Correct |
8 ms |
6528 KB |
Output is correct |
7 |
Correct |
8 ms |
6528 KB |
Output is correct |
8 |
Correct |
8 ms |
6528 KB |
Output is correct |
9 |
Correct |
8 ms |
6528 KB |
Output is correct |
10 |
Correct |
8 ms |
6528 KB |
Output is correct |
11 |
Correct |
8 ms |
6528 KB |
Output is correct |
12 |
Correct |
10 ms |
6528 KB |
Output is correct |
13 |
Correct |
8 ms |
6528 KB |
Output is correct |
14 |
Correct |
9 ms |
6528 KB |
Output is correct |
15 |
Correct |
8 ms |
6528 KB |
Output is correct |
16 |
Correct |
8 ms |
6528 KB |
Output is correct |
17 |
Correct |
8 ms |
6528 KB |
Output is correct |
18 |
Correct |
8 ms |
6528 KB |
Output is correct |
19 |
Correct |
8 ms |
6528 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
6528 KB |
Output is correct |
2 |
Correct |
8 ms |
6528 KB |
Output is correct |
3 |
Correct |
8 ms |
6528 KB |
Output is correct |
4 |
Correct |
8 ms |
6528 KB |
Output is correct |
5 |
Correct |
9 ms |
6528 KB |
Output is correct |
6 |
Correct |
8 ms |
6528 KB |
Output is correct |
7 |
Correct |
8 ms |
6528 KB |
Output is correct |
8 |
Correct |
8 ms |
6528 KB |
Output is correct |
9 |
Correct |
8 ms |
6528 KB |
Output is correct |
10 |
Correct |
8 ms |
6528 KB |
Output is correct |
11 |
Correct |
8 ms |
6528 KB |
Output is correct |
12 |
Correct |
10 ms |
6528 KB |
Output is correct |
13 |
Correct |
8 ms |
6528 KB |
Output is correct |
14 |
Correct |
9 ms |
6528 KB |
Output is correct |
15 |
Correct |
8 ms |
6528 KB |
Output is correct |
16 |
Correct |
8 ms |
6528 KB |
Output is correct |
17 |
Correct |
8 ms |
6528 KB |
Output is correct |
18 |
Correct |
8 ms |
6528 KB |
Output is correct |
19 |
Correct |
8 ms |
6528 KB |
Output is correct |
20 |
Correct |
14 ms |
7552 KB |
Output is correct |
21 |
Correct |
14 ms |
7552 KB |
Output is correct |
22 |
Correct |
15 ms |
7552 KB |
Output is correct |
23 |
Correct |
14 ms |
7552 KB |
Output is correct |
24 |
Correct |
16 ms |
7680 KB |
Output is correct |
25 |
Correct |
16 ms |
7552 KB |
Output is correct |
26 |
Correct |
15 ms |
7552 KB |
Output is correct |
27 |
Correct |
14 ms |
7552 KB |
Output is correct |
28 |
Correct |
16 ms |
7680 KB |
Output is correct |
29 |
Correct |
16 ms |
7552 KB |
Output is correct |
30 |
Correct |
13 ms |
7552 KB |
Output is correct |
31 |
Correct |
13 ms |
7552 KB |
Output is correct |
32 |
Correct |
15 ms |
7788 KB |
Output is correct |
33 |
Correct |
15 ms |
7680 KB |
Output is correct |
34 |
Correct |
15 ms |
7552 KB |
Output is correct |
35 |
Correct |
16 ms |
7808 KB |
Output is correct |
36 |
Correct |
15 ms |
7808 KB |
Output is correct |
37 |
Correct |
20 ms |
7552 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
139 ms |
30436 KB |
Output is correct |
2 |
Correct |
113 ms |
30180 KB |
Output is correct |
3 |
Correct |
138 ms |
31588 KB |
Output is correct |
4 |
Correct |
143 ms |
31332 KB |
Output is correct |
5 |
Correct |
159 ms |
33632 KB |
Output is correct |
6 |
Correct |
131 ms |
30796 KB |
Output is correct |
7 |
Correct |
129 ms |
30664 KB |
Output is correct |
8 |
Correct |
110 ms |
30180 KB |
Output is correct |
9 |
Correct |
107 ms |
29924 KB |
Output is correct |
10 |
Correct |
98 ms |
29924 KB |
Output is correct |
11 |
Correct |
165 ms |
33564 KB |
Output is correct |
12 |
Correct |
174 ms |
33764 KB |
Output is correct |
13 |
Correct |
197 ms |
33124 KB |
Output is correct |
14 |
Correct |
187 ms |
33120 KB |
Output is correct |
15 |
Correct |
153 ms |
30816 KB |
Output is correct |
16 |
Correct |
153 ms |
30796 KB |
Output is correct |
17 |
Correct |
144 ms |
30688 KB |
Output is correct |
18 |
Correct |
157 ms |
33380 KB |
Output is correct |
19 |
Correct |
8 ms |
6528 KB |
Output is correct |
20 |
Correct |
8 ms |
6528 KB |
Output is correct |
21 |
Correct |
8 ms |
6528 KB |
Output is correct |
22 |
Correct |
8 ms |
6528 KB |
Output is correct |
23 |
Correct |
9 ms |
6528 KB |
Output is correct |
24 |
Correct |
8 ms |
6528 KB |
Output is correct |
25 |
Correct |
8 ms |
6528 KB |
Output is correct |
26 |
Correct |
8 ms |
6528 KB |
Output is correct |
27 |
Correct |
8 ms |
6528 KB |
Output is correct |
28 |
Correct |
8 ms |
6528 KB |
Output is correct |
29 |
Correct |
8 ms |
6528 KB |
Output is correct |
30 |
Correct |
10 ms |
6528 KB |
Output is correct |
31 |
Correct |
8 ms |
6528 KB |
Output is correct |
32 |
Correct |
9 ms |
6528 KB |
Output is correct |
33 |
Correct |
8 ms |
6528 KB |
Output is correct |
34 |
Correct |
8 ms |
6528 KB |
Output is correct |
35 |
Correct |
8 ms |
6528 KB |
Output is correct |
36 |
Correct |
8 ms |
6528 KB |
Output is correct |
37 |
Correct |
8 ms |
6528 KB |
Output is correct |
38 |
Correct |
14 ms |
7552 KB |
Output is correct |
39 |
Correct |
14 ms |
7552 KB |
Output is correct |
40 |
Correct |
15 ms |
7552 KB |
Output is correct |
41 |
Correct |
14 ms |
7552 KB |
Output is correct |
42 |
Correct |
16 ms |
7680 KB |
Output is correct |
43 |
Correct |
16 ms |
7552 KB |
Output is correct |
44 |
Correct |
15 ms |
7552 KB |
Output is correct |
45 |
Correct |
14 ms |
7552 KB |
Output is correct |
46 |
Correct |
16 ms |
7680 KB |
Output is correct |
47 |
Correct |
16 ms |
7552 KB |
Output is correct |
48 |
Correct |
13 ms |
7552 KB |
Output is correct |
49 |
Correct |
13 ms |
7552 KB |
Output is correct |
50 |
Correct |
15 ms |
7788 KB |
Output is correct |
51 |
Correct |
15 ms |
7680 KB |
Output is correct |
52 |
Correct |
15 ms |
7552 KB |
Output is correct |
53 |
Correct |
16 ms |
7808 KB |
Output is correct |
54 |
Correct |
15 ms |
7808 KB |
Output is correct |
55 |
Correct |
20 ms |
7552 KB |
Output is correct |
56 |
Correct |
171 ms |
31456 KB |
Output is correct |
57 |
Correct |
154 ms |
31712 KB |
Output is correct |
58 |
Correct |
136 ms |
30432 KB |
Output is correct |
59 |
Correct |
137 ms |
30408 KB |
Output is correct |
60 |
Correct |
180 ms |
30824 KB |
Output is correct |
61 |
Correct |
137 ms |
30472 KB |
Output is correct |
62 |
Correct |
148 ms |
31588 KB |
Output is correct |
63 |
Correct |
138 ms |
30816 KB |
Output is correct |
64 |
Correct |
132 ms |
30816 KB |
Output is correct |
65 |
Correct |
147 ms |
30436 KB |
Output is correct |
66 |
Correct |
155 ms |
29924 KB |
Output is correct |
67 |
Correct |
207 ms |
30052 KB |
Output is correct |
68 |
Correct |
212 ms |
30052 KB |
Output is correct |
69 |
Correct |
169 ms |
30048 KB |
Output is correct |
70 |
Correct |
210 ms |
30176 KB |
Output is correct |
71 |
Correct |
206 ms |
30052 KB |
Output is correct |
72 |
Correct |
168 ms |
30180 KB |
Output is correct |
73 |
Correct |
210 ms |
30176 KB |
Output is correct |
74 |
Correct |
115 ms |
29924 KB |
Output is correct |
75 |
Correct |
110 ms |
29924 KB |
Output is correct |
76 |
Correct |
176 ms |
33636 KB |
Output is correct |
77 |
Correct |
198 ms |
33632 KB |
Output is correct |
78 |
Correct |
205 ms |
33248 KB |
Output is correct |
79 |
Correct |
213 ms |
30052 KB |
Output is correct |
80 |
Correct |
170 ms |
30820 KB |
Output is correct |
81 |
Correct |
123 ms |
29920 KB |
Output is correct |
82 |
Correct |
180 ms |
30816 KB |
Output is correct |
83 |
Correct |
176 ms |
30564 KB |
Output is correct |
84 |
Correct |
209 ms |
30048 KB |
Output is correct |
85 |
Correct |
183 ms |
30432 KB |
Output is correct |
86 |
Correct |
155 ms |
30304 KB |
Output is correct |
87 |
Correct |
180 ms |
30180 KB |
Output is correct |
88 |
Correct |
181 ms |
30436 KB |
Output is correct |
89 |
Correct |
168 ms |
30412 KB |
Output is correct |
90 |
Correct |
222 ms |
33380 KB |
Output is correct |
91 |
Correct |
208 ms |
31976 KB |
Output is correct |
92 |
Correct |
165 ms |
30048 KB |
Output is correct |
93 |
Correct |
214 ms |
30048 KB |
Output is correct |
94 |
Correct |
170 ms |
30436 KB |
Output is correct |
95 |
Correct |
242 ms |
30036 KB |
Output is correct |
96 |
Correct |
223 ms |
33636 KB |
Output is correct |
97 |
Correct |
227 ms |
33652 KB |
Output is correct |
98 |
Correct |
240 ms |
33652 KB |
Output is correct |
99 |
Correct |
203 ms |
33504 KB |
Output is correct |
100 |
Correct |
179 ms |
33632 KB |
Output is correct |
101 |
Correct |
215 ms |
33636 KB |
Output is correct |
102 |
Correct |
181 ms |
34020 KB |
Output is correct |
103 |
Correct |
168 ms |
30560 KB |
Output is correct |