Created
February 28, 2015 14:26
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#include <bits/stdc++.h> | |
using namespace std; | |
int main(int argc, char *argv[]) | |
{ | |
int n; | |
cin>>n; | |
long long int ans=0; | |
for(int i=1;i<n;i++) | |
for(int j=i+1;j<=n;j++) | |
{ | |
cout<<"? "<<i<<" "<<j<<endl; | |
long long int tmp; | |
cin>>tmp; | |
ans=max(ans,tmp); | |
} | |
cout<<"! "<<ans<<endl; | |
return 0; | |
} |
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