Submission #1127609

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127609		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=0;
    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=z-1;
    while(l<r){
        int mid1=l+(r-l)/3;
        int mid2=r-(r-l)/3;
        int amid1=grid_max(mid1).first;
        int amid2=grid_max(mid2).first;
        if(amid1<amid2){
            l=mid1+1;
        }else{
            r=mid2-1;
        }
    }
    give_ans(grid_max(mid2).second.first,grid_max(mid2).second.second,l);
    return 0;
}

Compilation message (stderr)

worm.cpp: In function 'std::pair<int, std::pair<int, int> > grid_max(int)':
worm.cpp:24:23: error: conversion from 'int' to non-scalar type 'std::pair<int, int>' requested
   24 |     pair<int,int> mxI=0;
      |                       ^
worm.cpp: In function 'int main()':
worm.cpp:43:20: error: 'z' was not declared in this scope
   43 |     int l=0; int r=z-1;
      |                    ^
worm.cpp:55:23: error: 'mid2' was not declared in this scope
   55 |     give_ans(grid_max(mid2).second.first,grid_max(mid2).second.second,l);
      |                       ^~~~