Submission #484572

#	Time	Username	Problem	Language	Result	Execution time	Memory
484572		Victor	Pipes (CEOI15_pipes)	C++17	0 / 100	2721 ms	65536 KiB

pipes

#include <bits/stdc++.h>

using namespace std;

#define rep(i, a, b) for (int i = (a); i < (b); ++i)
#define per(i, a, b) for (int i = (b - 1); i >= (a); --i)
#define trav(a, x) for (auto &a : x)

#define all(x) x.begin(), x.end()
#define sz(x) x.size()
#define pb push_back
#define debug(x) cout << #x << " = " << x << endl

#define umap unordered_map
#define uset unordered_set

typedef pair<int, int> ii;
typedef pair<int, ii> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;

typedef long long ll;
typedef pair<ll, ll> pll;
typedef vector<ll> vll;
typedef vector<pll> vpll;

const int INF = 1'000'000'007;

vector<unsigned short> graph[100000];
vector<unsigned char> extra[100000];
int n, m, num[100000], lo[100000];

int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);

    cin >> n >> m;
    int u, v;
    rep(i, 0, m) {
        cin >> u >> v;
        --u; --v;

        if(sz(graph[u])%8==0)extra[u].pb(0);
        if(sz(graph[v])%8==0)extra[v].pb(0);

        graph[u].pb(v & (1<<16) - 1);
        extra[u][sz(graph[u]) / 8] |= (v & (1 << 16)) >> (16 - sz(graph[u]) % 8);

        graph[v].pb(u & (1<<16) - 1);
        extra[v][sz(graph[v]) / 8] |= (u & (1 << 16)) >> (16 - sz(graph[v]) % 8);
    }
    return 0;
}

Compilation message (stderr)

pipes.cpp: In function 'int main()':
pipes.cpp:47:33: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   47 |         graph[u].pb(v & (1<<16) - 1);
      |                         ~~~~~~~~^~~
pipes.cpp:50:33: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   50 |         graph[v].pb(u & (1<<16) - 1);
      |                         ~~~~~~~~^~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10