제출 #731573

#제출 시각아이디문제언어결과실행 시간메모리
731573abcvuitunggioICC (CEOI16_icc)C++17
컴파일 에러
0 ms0 KiB
#include "icc.h" #include <bits/stdc++.h> using namespace std; #ifdef NAM int g[101][101],n,u[101],v[101],id=1,cnt; int query(int sa, int sb, int a[], int b[]){ cnt++; for (int i=0;i<sa;i++) for (int j=0;j<sb;j++){ if (a[i]<1||a[i]>n||b[j]<1||b[j]>n){ cout << "Cities in query out of range."; exit(1); } if (g[a[i]][b[j]]) return 1; } return 0; } void setRoad(int a, int b){ if (a<1||a>n||b<1||b>n){ cout << "Road cannot exist."; exit(2); } if (!g[a][b]){ cout << "Road " << a << ' ' << b << " doesn't exist."; exit(3); } id++; g[u[id]][v[id]]=g[v[id]][u[id]]=1; } #endif // NAM int p[101]; vector <int> ve[101],root; int f(int i){ return (p[i]==i?i:p[i]=f(p[i])); } void unite(int i, int j){ i=f(i); j=f(j); if (i>j) swap(i,j); p[j]=i; for (int k:ve[j]) ve[i].push_back(k); ve[j].clear(); } int ask(int x, int y, int a[], int b[]){ int A[x],B[y]; for (int i=0;i<x;i++) A[i]=a[i]; for (int j=0;j<y;j++) B[j]=b[j]; return query(x,y,A,B); } int n; void findroad(){ root.clear(); for (int i=1;i<=n;i++) if (f(i)==i) root.push_back(i); for (int i=0;(1<<i)<root.size();i++){ int sa=0,sb=0; for (int j=0;j<root.size();j++) if ((j>>i)&1) sb+=ve[root[j]].size(); else sa+=ve[root[j]].size(); int a[sa],b[sb],x=0,y=0; for (int j=0;j<root.size();j++){ if ((j>>i)&1) for (int u:ve[root[j]]){ b[y]=u; y++; } else for (int u:ve[root[j]]){ a[x]=u; x++; } } if (query(sa,sb,a,b)){ int l=1,r=sa,kq=-1,kq2=-1; while (l<=r){ int mid=(l+r)>>1; if (ask(mid,sb,a,b)){ kq=mid; r=mid-1; } else l=mid+1; } l=1,r=sb; while (l<=r){ int mid=(l+r)>>1; if (ask(sa,mid,a,b)){ kq2=mid; r=mid-1; } else l=mid+1; } setRoad(a[kq-1],b[kq2-1]); unite(a[kq-1],b[kq2-1]); break; } } } void Run(int N){ n=N; for (int i=1;i<=n;i++){ p[i]=i; ve[i].push_back(i); } for (int i=1;i<n;i++) findroad(); } int main(){ cin >> n; for (int i=1;i<n;i++) cin >> u[i] >> v[i]; g[u[1]][v[1]]=g[v[1]][u[1]]=1; Run(n); #ifdef NAM cout << "You successfully found all the roads. Congratulations!\n"; cout << "You've asked " << cnt << " queries."; #endif // NAM }

컴파일 시 표준 에러 (stderr) 메시지

icc.cpp: In function 'void findroad()':
icc.cpp:61:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for (int i=0;(1<<i)<root.size();i++){
      |                  ~~~~~~^~~~~~~~~~~~
icc.cpp:63:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         for (int j=0;j<root.size();j++)
      |                      ~^~~~~~~~~~~~
icc.cpp:69:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |         for (int j=0;j<root.size();j++){
      |                      ~^~~~~~~~~~~~
icc.cpp: In function 'int main()':
icc.cpp:120:16: error: 'u' was not declared in this scope
  120 |         cin >> u[i] >> v[i];
      |                ^
icc.cpp:120:24: error: 'v' was not declared in this scope
  120 |         cin >> u[i] >> v[i];
      |                        ^
icc.cpp:121:5: error: 'g' was not declared in this scope
  121 |     g[u[1]][v[1]]=g[v[1]][u[1]]=1;
      |     ^
icc.cpp:121:7: error: 'u' was not declared in this scope
  121 |     g[u[1]][v[1]]=g[v[1]][u[1]]=1;
      |       ^
icc.cpp:121:13: error: 'v' was not declared in this scope
  121 |     g[u[1]][v[1]]=g[v[1]][u[1]]=1;
      |             ^