제출 #631405

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
631405		Soul234	Ceste (COCI17_ceste)	C++14	48 / 160	70 ms	1480 KiB

ceste

#include<bits/stdc++.h>
using namespace std;

void DBG() { cerr << "]\n"; }
template<class H, class... T> void DBG(H h, T... t) {
    cerr << h; if(sizeof...(t)) cerr << ", ";
    DBG(t...);
}
#ifdef LOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif // LOCAL

#define FOR(i,a,b) for(int i = (a) ; i<(b) ; i++)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for(int i = (b)-1 ; i>=(a) ; i--)
#define R0F(i,a) ROF(i,0,a)
#define each(e,a) for(auto &e : (a))
#define sz(v) (int)(v).size()
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pb push_back
#define tcT template<class T
#define nl "\n"

using ll = long long;
using vi = vector<int>;
using pi = pair<int,int>;
using str = string;
tcT> using V = vector<T>;
tcT> using pqg = priority_queue<T,vector<T>,greater<T>>;

void setIO(string NAME = "") {
    cin.tie(0)->sync_with_stdio(0);
    if(sz(NAME)) {
        freopen((NAME + ".inp").c_str(),"r",stdin);
        freopen((NAME + ".out").c_str(),"w",stdout);
    }
}

tcT> bool ckmin(T&a, const T&b) {
    return b < a ? a=b,1 : 0; }
tcT> bool ckmax(T&a, const T&b) {
    return b > a ? a=b,1 : 0; }

const int MOD = 1e9 + 7;

struct Edge {
    int to, tt, cst;
};

struct Dat {
    int cst, tt, u;
    bool operator<(const Dat &rhs) const {
        return cst > rhs.cst;
    }
};

const int MX = 2e3+5;
V<Edge> adj[MX];
int N, M, mnT[MX];
ll ans[MX];

void solve() {
    cin >> N >> M;
    F0R(i, M) {
        int u, v, tt, cst;
        cin >> u >> v >> tt >> cst;
        adj[u].pb({v, tt, cst});
        adj[v].pb({u, tt, cst});
    }
    memset(mnT, 0x3f, sizeof mnT);
    memset(ans, 0x3f, sizeof ans);
    mnT[1] = 0;
    priority_queue<Dat> pq;
    pq.push({0, 0, 1});
    while(sz(pq)) {
        int u = pq.top().u;
        int cst = pq.top().cst;
        int tt = pq.top().tt;
        pq.pop();
        if(tt > mnT[u]) continue;
        ckmin(ans[u], 1LL * cst * tt);
        ckmin(mnT[u], tt);
        each(ed, adj[u]) {
            int cstv = cst + ed.cst;
            int v = ed.to;
            int ttv = tt + ed.tt;
            if(ttv < mnT[v]) {
                pq.push({cstv, ttv, v});
            }
        }
    }
    FOR(i,2,N+1) cout << ans[i] << nl;
}

int main() {
    setIO();

    int t=1;
    //cin>>t;
    while(t-->0) {
        solve();
    }

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

ceste.cpp: In function 'void setIO(std::string)':
ceste.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen((NAME + ".inp").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ceste.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen((NAME + ".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 0 / 16
• Subtask 3: 16 / 16
• Subtask 4: 0 / 16
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• Subtask 6: 16 / 16
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• Subtask 10: 0 / 16