#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***********************************/
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:54:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main(){
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
91 ms |
3496 KB |
Output is correct |
| 2 |
Incorrect |
62 ms |
1528 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
896 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
81 ms |
1664 KB |
Output is correct |
| 2 |
Correct |
135 ms |
4012 KB |
Output is correct |
| 3 |
Correct |
115 ms |
1600 KB |
Output is correct |
| 4 |
Correct |
85 ms |
1852 KB |
Output is correct |
| 5 |
Correct |
79 ms |
1792 KB |
Output is correct |
| 6 |
Correct |
80 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
13 ms |
896 KB |
Output is correct |
| 8 |
Correct |
2 ms |
384 KB |
Output is correct |
| 9 |
Correct |
12 ms |
896 KB |
Output is correct |
| 10 |
Correct |
12 ms |
896 KB |
Output is correct |
| 11 |
Correct |
13 ms |
1040 KB |
Output is correct |
| 12 |
Correct |
16 ms |
896 KB |
Output is correct |
| 13 |
Correct |
12 ms |
816 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
896 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
