Submission #1134539

#	Time	Username	Problem	Language	Result	Execution time	Memory
1134539		modwwe	Travelling Merchant (APIO17_merchant)	C++20	100 / 100	54 ms	2120 KiB

merchant

#include<bits/stdc++.h>
#define int   long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task2 "ftree"
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)
#define pb push_back
#define mask(k) (1<<k)
#define mp make_pair
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
}
void phongbeo();
const int inf = 1e16;
const ll mod2 = 1e9+7;
const int  mod1 = 998244353;
const ll base=67;
int add(int x,int y)
{
    if(x+y>=mod2) x-=mod2;
    if(x+y<0)x+=mod2;
    return x+y;
}
struct icd
{
    long double a;
    int b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a,b,c;
};
struct id
{
    int a, b, c, d;
};
struct ie
{
    int a, b, c, d, e;

};
ll  n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, mid, l2, r2, center;
ll  i, s10, s12,k1,k2,k3,s11,lim,w,l,r ;
ll kk;
ll el = 19;
main()
{
    if(fopen(task2".inp","r"))
    {
        fin(task2);
        fou(task2);
    }
    if(fopen(task".inp","r"))
    {
        fin(task);
        fou(task);
    }
    NHP
    /// cin>>s1;
    //modwwe
    phongbeo(),down
    // checktime
}
int f[101][101],dist[101][101],b[101][1001],s[101][1001],cost[101][101];
bool check(int x)
{
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
        {
            if(dist[i][j]==inf) f[i][j]=-inf;
            else
                f[i][j]=cost[i][j]-dist[i][j]*x;
        }
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
            for(int z=1; z<=n; z++)
                f[j][z]=max(f[j][z],f[j][i]+f[i][z]);
    for(int i=1; i<=n; i++)
        if(f[i][i]>=0)return 1;
    return 0;
}
void phongbeo()
{
    cin>>n>>m>>k;
    for(int i=1; i<=n; i++)
        for(int j=1; j<=k; j++)
            cin>>b[i][j]>>s[i][j];
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
            dist[i][j]=inf;
    for(int i=1; i<=m; i++)
    {
        cin>>l>>r>>s2;
        dist[l][r]=s2;
    }
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
            for(int z=1; z<=n; z++)
                dist[j][z]=min(dist[j][i]+dist[i][z],dist[j][z]);
    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
            for(int z=1; z<=k; z++)
            {
                if(s[j][z]==-1||b[i][z]==-1)continue;
                cost[i][j]=max(cost[i][j],s[j][z]-b[i][z]);
            }
    l=1;
    r=1e9;
    while(l<=r)
    {
        int mid=l+r>>1;
        if(check(mid))l=mid+1;
        else r=mid-1;
    }
    cout<<l-1;
}

Compilation message (stderr)

merchant.cpp:74:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   74 | main()
      | ^~~~
merchant.cpp: In function 'int main()':
merchant.cpp:12:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
merchant.cpp:78:9: note: in expansion of macro 'fin'
   78 |         fin(task2);
      |         ^~~
merchant.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fou(x) freopen(x".out","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
merchant.cpp:79:9: note: in expansion of macro 'fou'
   79 |         fou(task2);
      |         ^~~
merchant.cpp:12:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
merchant.cpp:83:9: note: in expansion of macro 'fin'
   83 |         fin(task);
      |         ^~~
merchant.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fou(x) freopen(x".out","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
merchant.cpp:84:9: note: in expansion of macro 'fou'
   84 |         fou(task);
      |         ^~~

• Subtask 1: 12 / 12
• Subtask 2: 21 / 21
• Subtask 3: 33 / 33
• Subtask 4: 34 / 34