Submission #780618

#	Time	Username	Problem	Language	Result	Execution time	Memory
780618		andecaandeci	Zagrade (COI20_zagrade)	C++17	Compilation error	0 ms	0 KiB

zagrade

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,q;
char ans[100005];
int main(){
    cin>>n>>q;
    for (int i=1;i<=100005;i++) ans[i]=' ';
    ans[1]='('; ans[n]=')';
    ll lo=2,hi=n-1;
    while(lo<=hi){
        cout<<">>> ? "<<lo-1<<" "<<lo<<endl;
        fflush(stdout);
        ll x;
        cin>>x;
        if (x==1) {
            if (ans[lo]==' ')
                ans[lo]=')';
            if (ans[lo+1]==' ')
                ans[lo+1]='(';
            lo+=2;
        }
        else{
            if (ans[lo]==' ')
                ans[lo]='(';
            lo+=1;
        }
        cout<<">>> ? "<<hi<<" "<<hi+1<<endl;
        cin>>x;
        fflush(stdout);
        if (x==1){
            if (ans[hi]==' ')
                ans[hi]='(';
            if (ans[hi-1]==' ')
                ans[hi-1]=')';
            hi-=2;
        }
        else{
            if (ans[hi]==' ')
                ans[hi]=')';
            hi-=1;
        }
    }
    cout<<">>> ! "<<
    for (int i=1;i<=n;i++){
        cout<<ans[i];
    }
}

Compilation message (stderr)

zagrade.cpp: In function 'int main()':
zagrade.cpp:45:5: error: expected primary-expression before 'for'
   45 |     for (int i=1;i<=n;i++){
      |     ^~~
zagrade.cpp:45:18: error: 'i' was not declared in this scope; did you mean 'hi'?
   45 |     for (int i=1;i<=n;i++){
      |                  ^
      |                  hi