Codeforces Round #422 (Div. 2), problem: (C) Hacker, pack your bags Solution In C/C++
#include<cstdio> #include<vector> #include<cstring> #include<algorithm> #define ll long long using namespace std; ll ans,c,n,x,L,R,cc; vector<pair<ll,ll> >l,r; int main(){ scanf(“%lld%lld”,&n,&x); for(int i=1;i<=n;i++){ scanf(“%lld%lld%lld”,&L,&R,&cc); l.push_back(make_pair(R-L+1,cc)); r.push_back(make_pair(R-L+1,cc)); } memset(c,0x3f3f,sizeof(c));ans=c; for(int i=1;i<200100;i++){ for(int j=0;j<l.size();j++)l.first>=x?0:ans=min(ans,c.first]+l.second); for(int j=0;j<r.size();j++)c.first]=min(c.first],r.second); } printf(“%lld”,ans==c?-1:ans); return 0; …