//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};
void setIO(string s) {
freopen((s + ".in").c_str(), "r", stdin);
freopen((s + ".out").c_str(), "w", stdout);
}
const int mxn=1e5+5;
const ll inf=1e18;
vector<ll> segtree(mxn*4,inf);
void update(int pos,int val,int l=0,int r=mxn-1,int v=1){
if(l==r){
segtree[v]=min(segtree[v],val);
return;
}
int mid=(l+r)/2;
if(pos<=mid) update(pos,val,l,mid,v*2);
else update(pos,val,mid+1,r,v*2+1);
segtree[v]=min(segtree[v*2],segtree[v*2+1]);
}
int query(int tl,int tr,int l=0,int r=mxn-1,int v=1){
if(r<tl or tr<l){
return inf;
}
if(tl<=l and r<=tr){
return segtree[v];
}
int mid=(l+r)/2;
return min(query(tl,min(mid,tr),l,mid,v*2),query(max(mid+1,tl),tr,mid+1,r,v*2+1));
}
signed main() {_
int n,m;
cin>>n>>m;
vector<int> q[mxn];
vector<int> t(m),l(m),r(n),c(m);
vector<int> xs;
xs.push_back(0);
for(int i=0;i<m;i++){
cin>>t[i]>>l[i]>>r[i]>>c[i];
xs.push_back(r[i]);
}
sort(all(xs));
xs.resize(unique(all(xs))-xs.begin());
if(xs.back()!=n){
cout<<-1<<'\n';
return 0;
}
for(int i=0;i<m;i++){
r[i]=lower_bound(all(xs),r[i])-xs.begin();
q[r[i]].push_back(i);
}
vector<ll> dp(xs.size(),inf);
update(0,0);
for(int i=1;i<xs.size();i++){
for(auto v:q[i]){
l[v]=lower_bound(all(xs),l[v]-1)-xs.begin();
dp[i]=min(dp[i],query(l[v],i)+c[v]);
}
update(i,dp[i]);
}
ll ans=dp[xs.size()-1];
cout<<(ans==inf?-1:ans)<<'\n';
return 0;
}
//maybe its multiset not set
//yeeorz
//laborz
// dp[i]=
Compilation message
treatment.cpp: In function 'int main()':
treatment.cpp:69:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
69 | for(int i=1;i<xs.size();i++){
| ~^~~~~~~~~~
treatment.cpp: In function 'void setIO(std::string)':
treatment.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
16 | freopen((s + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
treatment.cpp:17:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
17 | freopen((s + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
173 ms |
524288 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
5720 KB |
Output is correct |
| 2 |
Runtime error |
166 ms |
524288 KB |
Execution killed with signal 9 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
5720 KB |
Output is correct |
| 2 |
Runtime error |
166 ms |
524288 KB |
Execution killed with signal 9 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
173 ms |
524288 KB |
Execution killed with signal 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
