제출 #927676

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
927676		LonlyR	Robot (JOI21_ho_t4)	C++17	컴파일 에러	0 ms	0 KiB

Main

#include<bits/stdc++.h>
#define int long long
#define ii pair<int,int>
#define ff first
#define ss second
 
using namespace std;
const int maxn = 2e5 + 5;
int n, m;
int dp[maxn];
vector<array<int, 3>> adj[maxn];
map<int,int> col[maxn];
map<int,ii> dpc[maxn];
map<int,vector<ii>> adjc[maxn];
 
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
//    freopen("test.inp", "r", stdin);
//    freopen("test.out", "w", stdout);
    cin >> n >> m;
    for (int i = 1, u, v, w, t; i <= m; i++)
    {
        cin >> u >> v >> w >> t;
        adj[u].push_back({v, w, t});
        adj[v].push_back({u, w, t});
        adjc[u][w].emplace_back(v, t);
        adjc[v][w].emplace_back(u, t);
        col[u][w] += t;
        col[v][w] += t;
    }
    for (int i = 1; i <= n; i++)
        for (auto p : adj[i])
        {
            int &u = col[i][p[1]];
            if (u == 0) continue;
            if (u == -1) u = p[2];
            else u += p[2];
        }
    #define iii tuple<int,int,int>
    priority_queue<iii, vector<iii>, greater<iii>> pq;
    memset(dp, 0x3f, sizeof dp);
    int oo = dp[0];
    dp[1] = 0;
    pq.emplace(0, 1, 0);
    while (pq.size())
    {
        int u, v, w;
        tie(v, u, w) = pq.top();
        pq.pop();
        if (w == 0)
        {
            if (v != dp[u]) continue;
            for (auto p : adj[u])
            {
                int color = p[1], cost = p[2], nxt = p[0];
                    int val = v + cost, f = 0;
                    if (dp[nxt] > val)
                        dp[nxt] = val,
                        f = 1;
                    if (!dpc[nxt].count(color) || dpc[nxt][color].ff > val - cost)
                        dpc[nxt][color] = {val - cost, u},
                        pq.emplace(val - cost, nxt, color);
                    val = v + col[u][color] - cost;
                    if (dp[nxt] > val)
                        dp[nxt] = val,
                        f = 1;
                    if (f) pq.emplace(dp[nxt], nxt, 0);
                }
            }
        }
        else for (auto p : adjc[u][w])
        {
            int nxt = p.ff, cost = p.ss, color = w;
            if (nxt != dpc[u][color].ss)
            {
                int val = dpc[u][color].ff + col[u][color] - cost;
                if (dp[nxt] > val)
                    dp[nxt] = val,
                    pq.emplace(dp[nxt], nxt, 0);
                if (!dpc[nxt].count(color) || dpc[nxt][color].ff > val - cost)
                    dpc[nxt][color] = {val - cost, u},
                    pq.emplace(val - cost, nxt, color);
            }
        }
    }
    cout << (dp[n] == oo ? -1 : dp[n]);
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:73:9: error: 'else' without a previous 'if'
   73 |         else for (auto p : adjc[u][w])
      |         ^~~~
Main.cpp:73:33: error: 'u' was not declared in this scope
   73 |         else for (auto p : adjc[u][w])
      |                                 ^
Main.cpp:73:36: error: 'w' was not declared in this scope
   73 |         else for (auto p : adjc[u][w])
      |                                    ^
Main.cpp:76:31: error: 'color' was not declared in this scope; did you mean 'col'?
   76 |             if (nxt != dpc[u][color].ss)
      |                               ^~~~~
      |                               col
Main.cpp:78:62: error: 'cost' was not declared in this scope; did you mean 'cosl'?
   78 |                 int val = dpc[u][color].ff + col[u][color] - cost;
      |                                                              ^~~~
      |                                                              cosl
Main.cpp:44:9: warning: unused variable 'oo' [-Wunused-variable]
   44 |     int oo = dp[0];
      |         ^~
Main.cpp: At global scope:
Main.cpp:88:5: error: 'cout' does not name a type
   88 |     cout << (dp[n] == oo ? -1 : dp[n]);
      |     ^~~~
Main.cpp:89:1: error: expected declaration before '}' token
   89 | }
      | ^