Submission #1079802

#TimeUsernameProblemLanguageResultExecution timeMemory
1079802_rain_Crocodile's Underground City (IOI11_crocodile)C++14
Compilation error
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; #define ll long long #define fixbug false void SETIO(string name = ""){ if (name=="") return ; freopen((name+".inp").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout); return; } //... READ INPUT const int maxn = 50000; const int maxm = 10000000; static int R[maxm+2][2]; static int L[maxn+2]; static int P[maxn+2]; int n , m , k; vector<pair<int,int>> g[maxn+2]; ll d[maxn+2][2]; bool ex[maxn+2]; #define ii pair<ll,int> #define fi first #define se second int travel(int n , int m , int R[][2] , int L[] , int k , int P[]){ for (int i = 0; i < m; ++i) { g[R[i][0]].push_back({R[i][1] , L[i]}); g[R[i][1]].push_back({R[i][0] , L[i]}); if (fixbug){ cout << R[i][0] << ' ' << R[i][1] << ' ' << L[i] << '\n'; } } priority_queue<ii,vector<ii>,greater<ii>> q; memset(d,0x3f,sizeof d); ll ans = d[0][0]; for (int i = 0 ; i < k; ++i){ d[P[i]][0] = d[P[i]][1] = 0; q.push({0 , P[i]}); } while (q.size()){ int u = q.top().second; ll cost = q.top().first; q.pop(); if (cost != d[u][0]) continue; if (fixbug){ cout << "(DEBUG)\n"; cout << u << ' ' << cost << "\n"; } for (auto & x : g[u]){ int v = x.first , w = x.second; if (d[v][0] > cost + w){ d[v][0] = cost + w; if (d[v][1] > d[v][0]) swap(d[v][1] , d[v][0]); q.push({d[v][0] , v}); } } } if (fixbug){ cout << ans << '\n'; for (int i = 0; i < n; ++i) cout << d[i][0] << '\n'; } return d[0][0]; }

Compilation message (stderr)

crocodile.cpp: In function 'void SETIO(std::string)':
crocodile.cpp:8:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     freopen((name+".inp").c_str(),"r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crocodile.cpp:9:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     freopen((name+".out").c_str(),"w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crocodile.cpp: At global scope:
crocodile.cpp:17:16: warning: 'P' defined but not used [-Wunused-variable]
   17 |     static int P[maxn+2];
      |                ^
crocodile.cpp:16:16: warning: 'L' defined but not used [-Wunused-variable]
   16 |     static int L[maxn+2];
      |                ^
crocodile.cpp:15:16: warning: 'R' defined but not used [-Wunused-variable]
   15 |     static int R[maxm+2][2];
      |                ^
/usr/bin/ld: /tmp/ccaZQUjG.o: in function `main':
grader.cpp:(.text.startup+0x36): undefined reference to `travel_plan(int, int, int (*) [2], int*, int, int*)'
collect2: error: ld returned 1 exit status