Submission #1127615

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127615		Ludissey	Worm Worries (BOI18_worm)	C++20	Compilation error	0 ms	0 KiB

worm

#include <bits/stdc++.h>
#define sz(a) (int)a.size()
#define all(a) a.begin(), a.end()
using namespace std;
vector<int> a;
map<pair<int,pair<int,int>>,int> req;
int n,m,k,q; 

void give_ans(int x, int y, int z){
    cout << "! " << x+1 << " " << y+1 << " " << z+1 << endl;
    return;
}
int ask(int x, int y, int z){
    if(req.find({x,{y,z}})!=req.end()) return req[{x,{y,z}}];
    if(x<0||x>=n||y<0||y>=m||z<0||z>=k) return -1e9;
    cout << "? " << x+1 << " " << y+1 << " " << z+1 << endl;
    int ans; cin>>ans;
    req[{x,{y,z}}]=ans;
    return ans;
}

pair<int,pair<int,int>> grid_max(int z){
    int mx=0;
    pair<int,int> mxI;
    for (int i = 0; i < m; i++)
    {
        for (int j = 0; j < n; j++)
        {
            int a=ask(j,i,z);
            if(mx<a){
                mx=max(a,mx);
                mxI={j,i};
            }
        }
    }
    return {mx,mxI};
}


signed main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    cin >> n >> m >> k >> q;
    int l=0; int r=k-1;
    int ans=0;
    int midc=grid_max((l+r+1)/2).second;
    int midl=grid_max((l+r+1)/2-1).second;
    if(midc<midl){
        ans=(l+r+1)/2-1;
        r=(l+r+1)/2-1;
    }else{
        ans=(l+r+1)/2-1;
        l=(l+r+1)/2;
    }
    while(l<r){
        int mid=(l+r+1)/2;
        int midANS=grid_max(mid).first;
        int midANS2=grid_max(mid-1).first;
        if(midANS>=midANS2){
            ans=mid;
            l=mid;
        }else{
            r=mid-1;
            ans=mid-1;
        }
    }
    give_ans(grid_max(ans).second.first,grid_max(ans).second.second,ans);
    return 0;
}

Compilation message (stderr)

worm.cpp: In function 'int main()':
worm.cpp:45:34: error: cannot convert 'std::pair<int, int>' to 'int' in initialization
   45 |     int midc=grid_max((l+r+1)/2).second;
      |              ~~~~~~~~~~~~~~~~~~~~^~~~~~
      |                                  |
      |                                  std::pair<int, int>
worm.cpp:46:36: error: cannot convert 'std::pair<int, int>' to 'int' in initialization
   46 |     int midl=grid_max((l+r+1)/2-1).second;
      |              ~~~~~~~~~~~~~~~~~~~~~~^~~~~~
      |                                    |
      |                                    std::pair<int, int>