Submission #1987859
Source Code Expand
# include <iostream> # include <algorithm> # include <vector> # include <string> # include <set> # include <map> # include <cmath> # include <iomanip> # include <functional> # include <tuple> # include <utility> # include <stack> # include <queue> # include <list> # include <bitset> # include <complex> # include <chrono> # include <random> # include <limits.h> # include <unordered_map> # include <unordered_set> # include <deque> # include <cstdio> # include <cstring> using namespace std; using LL = long long; using ULL = unsigned long long; constexpr long long MOD = 1000000000 + 7; constexpr long long INF = 1e17 - 10; const double PI = acos(-1); typedef pair<LL, LL> Pll; typedef pair<LL, pair<LL, LL>> Ppll; typedef pair<LL, LL> Vec2; typedef tuple<LL, LL, LL> Tll; typedef pair<LL, Tll> Ptll; #define rep(i,rept) for(LL i=0;i<rept;i++) #define Mfor(i,n) for(LL i=n-1;i>=0;i--) struct Edge { LL to, cost; }; vector<Edge>vec[1100000]; LL h[1100000], w, n, m, s, t, sum, ans = 0, d[1100000], mn; void DIUX(LL s) { for (int i = 0; i < 1100000; i++) d[i] = INF; d[s] = 0; priority_queue<Ppll, vector<Ppll>, greater<Ppll>> pq; pq.push(make_pair(d[s], Pll(s, 0))); // (cost,頂点番号) while (!pq.empty()) { Ppll pp; pp = pq.top(); LL cos = pp.first, vv = pp.second.first, nn = pp.second.second; pq.pop(); if (d[vv] < pp.first)continue; rep(i, vec[vv].size()) { if (nn == vec[vv][i].cost&&d[vv] < d[vec[vv][i].to]) { d[vec[vv][i].to] = d[vv]; pq.push(make_pair(d[vec[vv][i].to], Pll(vec[vv][i].to, vec[vv][i].cost))); } if (d[vv] + 1 < d[vec[vv][i].to]) { d[vec[vv][i].to] = d[vv] + 1; pq.push(make_pair(d[vec[vv][i].to], Pll(vec[vv][i].to, 0))); } } } } int main() { cin >> n >> m; rep(i, m) { cin >> s >> t >> w; vec[s].push_back(Edge{ t,w }); vec[t].push_back(Edge{ s,w }); } DIUX(n); mn = d[1]; DIUX(1); mn = min(mn, d[n]); cout << (mn == INF ? -1 : mn) << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | E - Snuke's Subway Trip |
User | akusyounin |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 2028 Byte |
Status | WA |
Exec Time | 294 ms |
Memory | 51696 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 600 | ||||
Status | AC |
|
Set Name | Test Cases |
---|---|
Sample | |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, sample_01.txt, sample_02.txt, sample_03.txt, w1.txt, w10.txt, w11.txt, w12.txt, w13.txt, w14.txt, w15.txt, w16.txt, w17.txt, w18.txt, w2.txt, w3.txt, w4.txt, w5.txt, w6.txt, w7.txt, w8.txt, w9.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 13 ms | 37120 KB |
02.txt | WA | 148 ms | 45824 KB |
03.txt | AC | 294 ms | 49984 KB |
04.txt | AC | 242 ms | 49144 KB |
05.txt | WA | 256 ms | 49988 KB |
06.txt | WA | 104 ms | 41728 KB |
07.txt | WA | 158 ms | 43572 KB |
08.txt | AC | 278 ms | 50252 KB |
09.txt | AC | 166 ms | 43680 KB |
10.txt | AC | 161 ms | 43684 KB |
11.txt | AC | 202 ms | 48880 KB |
12.txt | AC | 123 ms | 45044 KB |
13.txt | AC | 152 ms | 46620 KB |
14.txt | WA | 201 ms | 51384 KB |
15.txt | AC | 180 ms | 49008 KB |
16.txt | WA | 197 ms | 50444 KB |
17.txt | WA | 194 ms | 50816 KB |
18.txt | AC | 141 ms | 46072 KB |
19.txt | WA | 195 ms | 50560 KB |
20.txt | WA | 198 ms | 50844 KB |
21.txt | AC | 226 ms | 51312 KB |
22.txt | WA | 212 ms | 50556 KB |
23.txt | WA | 223 ms | 51168 KB |
24.txt | WA | 202 ms | 49776 KB |
25.txt | AC | 122 ms | 45044 KB |
26.txt | AC | 152 ms | 46620 KB |
27.txt | WA | 203 ms | 50572 KB |
28.txt | WA | 192 ms | 51368 KB |
29.txt | WA | 211 ms | 50196 KB |
30.txt | AC | 211 ms | 51224 KB |
31.txt | WA | 144 ms | 46072 KB |
32.txt | AC | 191 ms | 51696 KB |
33.txt | WA | 201 ms | 51328 KB |
34.txt | WA | 194 ms | 48544 KB |
35.txt | AC | 123 ms | 45044 KB |
36.txt | AC | 156 ms | 46620 KB |
37.txt | WA | 202 ms | 50492 KB |
38.txt | WA | 197 ms | 50084 KB |
sample_01.txt | AC | 13 ms | 37120 KB |
sample_02.txt | AC | 13 ms | 37120 KB |
sample_03.txt | AC | 13 ms | 37120 KB |
w1.txt | WA | 213 ms | 48012 KB |
w10.txt | AC | 203 ms | 47360 KB |
w11.txt | WA | 124 ms | 43832 KB |
w12.txt | WA | 134 ms | 44928 KB |
w13.txt | WA | 152 ms | 45824 KB |
w14.txt | AC | 178 ms | 47360 KB |
w15.txt | WA | 124 ms | 43988 KB |
w16.txt | WA | 131 ms | 45056 KB |
w17.txt | WA | 148 ms | 45824 KB |
w18.txt | WA | 177 ms | 47360 KB |
w2.txt | WA | 213 ms | 48092 KB |
w3.txt | WA | 236 ms | 49392 KB |
w4.txt | WA | 254 ms | 49392 KB |
w5.txt | AC | 283 ms | 49392 KB |
w6.txt | WA | 242 ms | 49392 KB |
w7.txt | WA | 150 ms | 44124 KB |
w8.txt | WA | 169 ms | 44928 KB |
w9.txt | WA | 178 ms | 45824 KB |