oj.uz

Submission #106000

# Submission time Handle Problem Language Result Execution time Memory
106000 2019-04-16T07:04:06 Z username Travelling Merchant (APIO17_merchant) C++14
33 / 100
 334 ms 2416 KB 
#pragma GCC optimize("O3")
#include<stdint.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#include<ext/rope>
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define VIS(it,con) for(auto it=con.begin();it!=con.end();++it)
#define pob pop_back
#define pf push_front
#define pof pop_front
#define MIN(x,y) (x=min(x,(y)))
#define MAX(x,y) (x=max(x,(y)))
#define mid ((l+r)/2)
#define lch (idx*2+1)
#define rch (idx*2+2)
/*****************************************************************************/
#include<bits/stdc++.h>
#define int int_fast64_t
using namespace std;
typedef pair<int,int> pii;
typedef vector<int> VI;
#define REP(i,j,k) for(register int i=(j);i<(k);++i)
#define RREP(i,j,k) for(register int i=(j)-1;i>=(k);--i)
#define ALL(a) a.begin(),a.end()
#define MST(a,v) memset(a,(v),sizeof a)
#define pb push_back
#define F first
#define S second
#define endl '\n'
//																#define __debug
#ifdef __debug
	#define IOS (void)0
	#define de(...) cerr<<__VA_ARGS__
	#define ar(a,s,t) {REP(__i,s,t)de(setw(16)<<a[__i]<<' ');de(endl);}
#else
	#define IOS cin.tie(0),cout.tie(0),ios_base::sync_with_stdio(false)
	#define de(...) (void)0
	#define ar(...) (void)0
#endif
/***********************************default***********************************/
#define double long double
const int maxn=109,maxm=99e2+9,maxk=1e3+9,inf=1ll<<50;
const double eps=1e-2;
int n,m,k,b[maxn][maxk],s[maxn][maxk],t[maxn][maxn],c[maxn][maxn];
double d[maxn][maxn];

bool check(double x){
	REP(i,0,n)REP(j,0,n)d[i][j]=x*t[i][j]-(double)c[i][j];
	REP(i,0,n)REP(j,0,n)REP(p,0,n)MIN(d[i][j],d[i][p]+d[p][j]);
	REP(i,0,n)if(d[i][i]<=0)return 1;
	return 0;
}

main(){
	IOS;
	cin>>n>>m>>k;
	REP(i,0,n)REP(j,0,k){
		cin>>b[i][j]>>s[i][j];
		if(b[i][j]<0)b[i][j]=inf;
		if(s[i][j]<0)s[i][j]=-inf;
	}
	REP(i,0,n)REP(j,0,n)t[i][j]=inf,c[i][j]=0;
	REP(i,0,m){
		int v,w,tt;cin>>v>>w>>tt,--v,--w;
		t[v][w]=tt;
	}
	REP(i,0,n)REP(j,0,n)REP(p,0,n)MIN(t[i][j],t[i][p]+t[p][j]);
	REP(i,0,n)REP(j,0,n)REP(p,0,k)MAX(c[i][j],s[j][p]-b[i][p]);
	double l=0,r=1e11L+9;
	while(l+eps<r){
		if(check(mid))l=mid;
		else r=mid;
	}
	if(l-floor(l)<=eps)cout<<(int)floor(l)<<endl;
	else if(ceil(l)-l<=eps)cout<<(int)ceil(l)<<endl;
	else cout<<(int)floor(l)<<endl;
}

Compilation message

merchant.cpp:55:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 334 ms 2416 KB Output is correct
2 Incorrect 229 ms 1528 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 896 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 287 ms 1688 KB Output is correct
2 Correct 326 ms 2296 KB Output is correct
3 Correct 285 ms 1536 KB Output is correct
4 Correct 320 ms 1784 KB Output is correct
5 Correct 277 ms 1692 KB Output is correct
6 Correct 283 ms 1592 KB Output is correct
7 Correct 39 ms 1016 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 35 ms 1016 KB Output is correct
10 Correct 46 ms 1100 KB Output is correct
11 Correct 36 ms 1016 KB Output is correct
12 Correct 34 ms 1016 KB Output is correct
13 Correct 36 ms 896 KB Output is correct

Subtask #4
0 / 34.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 896 KB Output isn't correct
2 Halted 0 ms 0 KB -