제출 #1073706

#제출 시각아이디문제언어결과실행 시간메모리
1073706vjudge1Simurgh (IOI17_simurgh)C++17
컴파일 에러
0 ms0 KiB
#include "simurgh.h" #include <bits/stdc++.h> using namespace std; vector<vector<pair<int,int>>>adj(505); vector<vector<int>>adj1(505); vector<bool> vis(505,0); void DFS(int n){ vis[n] = 1; for(auto x: adj1[n]){ if(vis[x])continue; DFS(x); } } vector<int> find_roads(int n, vector<int> u, vector<int> v) { vector<pair<int,int>> edges; vector<int> r; int res=0; for(int i=0; i < u.size(); i++){ edges.push_back({u[i],v[i]}); adj[u[i]].push_back({v[i],i}); adj[v[i]].push_back({u[i],i}); } for(auto [x,y]: adj[0]){ r.push_back(y); //cout<<y<<" "; } //cout<<endl; int pos=0, lastres = 0, last = 0; /*if(edges.size() == (n*(n-1))/2){ vector<bool> used(edges.size(),0); for(auto x: r){ used[x] = 1; } res = count_common_roads(r); while(pos < n-1 && res < n-1){ for(auto [x,y]: adj[edges[r[pos]].second]){ if(!used[y]){ last = r[pos]; r[pos] = y; used[y] = 1; break; } } lastres = res; res = count_common_roads(r); /*for(auto x: r){ cout<<x<<" "; } cout<<endl;*/ if(lastres < res){ pos++; }else if(lastres == res){ for(auto [x,y]: adj[edges[r[pos]].first]){ used[y] = 1; } for(auto [x,y]: adj[edges[r[pos]].second]){ used[y] = 1; } used[r[pos]] = 0; r[pos] = last; pos++; res = lastres; }else if(lastres > res){ r[pos] = last; pos++; res = lastres; } } return r; }*/ for(int b=0; b < (1<<edges.size()); b++){ r.clear(); for(int i=0; i < n; i++){ adj1[i].clear(); vis[i] = 0; } for(int i=0; i < edges.size(); i++){ if(b & (1<<i)){ adj1[edges[i].first].push_back(edges[i].second); adj1[edges[i].second].push_back(edges[i].first); r.push_back(i); } } if(r.size() != n-1){ continue; } DFS(0); int cnt = 0; for(int i=0; i < n; i++){ if(vis[i]){ cnt++; }else{ break; } } if(cnt == n){ res = count_common_roads(r); }else{ continue; } if(res == n-1){ return r; } } return {0}; }

컴파일 시 표준 에러 (stderr) 메시지

simurgh.cpp:52:13: warning: "/*" within comment [-Wcomment]
   52 |             /*for(auto x: r){
      |              
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:23:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for(int i=0; i < u.size(); i++){
      |               ~~^~~~~~~~~~
simurgh.cpp:60:21: error: 'used' was not declared in this scope
   60 |                     used[y] = 1;
      |                     ^~~~
simurgh.cpp:63:21: error: 'used' was not declared in this scope
   63 |                     used[y] = 1;
      |                     ^~~~
simurgh.cpp:65:17: error: 'used' was not declared in this scope
   65 |                 used[r[pos]] = 0;
      |                 ^~~~
simurgh.cpp:74:9: warning: no return statement in function returning non-void [-Wreturn-type]
   74 |         }
      |         ^
simurgh.cpp: At global scope:
simurgh.cpp:75:9: error: expected unqualified-id before 'return'
   75 |         return r;
      |         ^~~~~~
simurgh.cpp:76:2: error: expected declaration before '}' token
   76 |  }*/
      |  ^
simurgh.cpp:76:4: error: expected unqualified-id before '/' token
   76 |  }*/
      |    ^
simurgh.cpp:78:15: error: 'b' does not name a type
   78 |  for(int b=0; b < (1<<edges.size()); b++){
      |               ^
simurgh.cpp:78:38: error: 'b' does not name a type
   78 |  for(int b=0; b < (1<<edges.size()); b++){
      |                                      ^
simurgh.cpp:117:2: error: expected unqualified-id before 'return'
  117 |  return {0};
      |  ^~~~~~
simurgh.cpp:118:1: error: expected declaration before '}' token
  118 | }
      | ^