Submission #345177

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<to;x++)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

int N,id;
int V[1010];
void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N;
	
	for(i=1;i<=N-1;i++) {
		cout << "? " << 1 << " " << (i+1) << endl;
		cin >> V[i];
		if(V[i]>V[id]) id=i;
	}
	x=id;
	int ma=0;
	FOR(i,N) {
		cout << "? " << x << " " << (i+1) << endl;
		cin >> V[i];
		ma=max(ma,V[i]);
	}
	cout<<ma<<endl;
	
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false);
	FOR(i,argc-1) s+=argv[i+1],s+='\n';
	FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	solve(); return 0;
}

Submission Info

Judge Result