Submission #486128

#	Time	Username	Problem	Language	Result	Execution time	Memory
486128		Koosha_mv	Toll (BOI17_toll)	C++14	100 / 100	339 ms	106808 KiB

toll

#include <bits/stdc++.h>
using namespace std;
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define print(v,r) f(i,0,r) cout<<v[i]<<" "; cout<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define Add(x,y) x=(x+y)%mod
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=1e5+9,sq=500,K=5,inf=1e9;

int n,k,m,q,a[N],dp[N],dist[N][sq];
vector<pair<int,int> > g[N];

void tsft(int u,int v){
	f(i,v*k,v*k+k) dp[i]=inf;
	f(i,u*k,u*k+k){
		f(j,v*k,v*k+k){
			minm(dp[j],dp[i]+dist[i][j-i]);
		}
	}	
}

main(){
	ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
	cin>>k>>n>>m>>q;
	f(i,0,m){
		int u,v,t;
		cin>>u>>v>>t;
		g[u].pb(mp(v,t));
	}
	f_(i,n-1,0){
		dist[i][0]=0;
		f(j,1,sq){
			dist[i][j]=inf;
			f(p,0,g[i].size()){
				if(g[i][p].F<=i+j){
					minm(dist[i][j],dist[g[i][p].F][j-(g[i][p].F-i)]+g[i][p].S);
				}
			}
		}
	}
	f(prt,0,q){
		int a,b,u,v;
		cin>>a>>b;
		u=a/k,v=b/k;
		f(i,u*k,u*k+k) dp[i]=inf;
		dp[a]=0;
		while(u!=v){
			int nxt=min(v,u+sq/k-1);
			tsft(u,nxt);
			u=nxt;
		}
		cout<<((dp[b] == inf || b<a) ? -1 : dp[b])<<'\n';
	}
}
/*
5 14 5 5
0 5 9
5 12 10
0 7 7
7 12 8
4 7 10
0 12
0 5
0 7
7 12
0 13
*/

Compilation message (stderr)

toll.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | main(){
      | ^~~~
toll.cpp: In function 'int main()':
toll.cpp:7:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   46 |    f(p,0,g[i].size()){
      |      ~~~~~~~~~~~~~~~           
toll.cpp:46:4: note: in expansion of macro 'f'
   46 |    f(p,0,g[i].size()){
      |    ^

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 8 / 8
• Subtask 4: 31 / 31
• Subtask 5: 44 / 44