Submission #456395

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
456395	2021-08-06 16:11:15	Killer2501	Railway (BOI17_railway)	C++14	100 / 100	160 ms	39864 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll, ll>
#define fi first
#define se second
#define pb push_back
const int N = 1e5+5;
const long long mod = 1e9+7;
const int base = 300;
ll m, n, k, a[N], ans, b[N], tong, d[N], c[N], lab[N], cnt, t, dp[N], h[N], P[N][20];
vector<pll> val[N];
vector<ll> adj[N], res;
ll pw(ll k, ll n)
{
    ll total = 1;
    for(; n; n >>= 1)
    {
        if(n & 1)total = total * k % mod;
        k = k * k % mod;
    }
    return total;
}
template<typename T>
void read(T&x)
{
    bool Neg=false;
    char c;
    for(c= getchar();c<'0'||c>'9';c=getchar())
 
 
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Compilation message (stderr)

railway.cpp: In function 'int main()':
railway.cpp:138:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  138 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
railway.cpp:139:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  139 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25