#include <bits/stdc++.h>
using namespace std;
int i,j,k,sa,sb,l,r,m,x,q,alo,balo;
int parent[101],mas[101],a[101],b[101];
bool fix[101],go[101][101];
int n;/*
bool query(int a,int b,int *A,int *B) {
int i,j;
for (i=0;i<a;i++)
for (j=0;j<b;j++)
if (go[A[i]][B[j]])
return true;
return false;
}
void setRoad(int a,int b) {
cout<<a<<" "<<b<<endl;
cin>>alo>>balo;
go[alo][balo]=go[balo][alo]=1;
}*/
void run(int n) {
srand(time(NULL));
for (i=1;i<=n;i++)
parent[i]=i;
for (j=1;j<n;j++) {
for (i=1;i<=n;i++)
fix[i]=0;
for (i=1;i<=n;i++)
fix[parent[i]]=1;
k=0;
for (i=1;i<=n;i++)
if (fix[i])
mas[k++]=i;q=0;
while (true) {
for (i=0;i<k;i++)
fix[mas[i]]=rand()%2;
sa=sb=0;
for (i=0;i<=n;i++)
a[i]=b[i]=0;
for (i=1;i<=n;i++) {
if (fix[parent[i]])
a[sa++]=i;
else
b[sb++]=i;
}q++;
if (query(sa,sb,a,b))
break;
}
// cout<<q<<endl;
l=1;r=sa;
while (l!=r) {
m=(l+r)/2;
for (i=0;i<=n;i++)
mas[i]=0;
for (i=l;i<=m;i++)
mas[i-l]=a[i-1];
if (query(m-l+1,sb,mas,b))
r=m;
else
l=m+1;
}
x=l;
l=1;r=sb;
while (l!=r) {
m=(l+r)/2;
for (i=0;i<=n;i++)
mas[i]=0;
for (i=l;i<=m;i++)
mas[i-l]=b[i-1];
if (query(sa,m-l+1,a,mas))
r=m;
else
l=m+1;
}
int solo=parent[a[x-1]];
for (i=1;i<=n;i++)
if (parent[i]==solo)
parent[i]=parent[b[l-1]];
setRoad(b[l-1],a[x-1]);
}
return;
}/*
int main() {
cin>>n;
cin>>alo>>balo;
go[alo][balo]=go[balo][alo]=1;
run(n);
return 0;
}*/
Compilation message
icc.cpp: In function 'void run(int)':
icc.cpp:31:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
if (fix[i])
^~
icc.cpp:32:28: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
mas[k++]=i;q=0;
^
icc.cpp:45:17: error: 'query' was not declared in this scope
if (query(sa,sb,a,b))
^~~~~
icc.cpp:56:17: error: 'query' was not declared in this scope
if (query(m-l+1,sb,mas,b))
^~~~~
icc.cpp:69:17: error: 'query' was not declared in this scope
if (query(sa,m-l+1,a,mas))
^~~~~
icc.cpp:78:9: error: 'setRoad' was not declared in this scope
setRoad(b[l-1],a[x-1]);
^~~~~~~
