Submission #404490

#	Time	Username	Problem	Language	Result	Execution time	Memory
404490		Theo830	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
ll INF = 1e9+7;
ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
#include "shoes.h"
long long count_swaps(std::vector<int> s){
    ll m = s.size();
    ll ans = 0;
    f(i,0,m){
        ll pos = i+1;
        while(s[pos] != -s[i]){
            pos++;
        }
        for(ll j = pos-1;j > i;j--)
            swap(s[j],s[j+1]);
            ans++;
        }
        if(s[i] > 0){
            swap(s[i],s[i+1]);
            ans++;
        }
        i++;
    }
    return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:35:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   35 |         for(ll j = pos-1;j > i;j--)
      |         ^~~
shoes.cpp:37:13: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   37 |             ans++;
      |             ^~~
shoes.cpp:39:14: error: 'i' was not declared in this scope
   39 |         if(s[i] > 0){
      |              ^
shoes.cpp:43:9: error: 'i' was not declared in this scope
   43 |         i++;
      |         ^
shoes.cpp:44:5: warning: no return statement in function returning non-void [-Wreturn-type]
   44 |     }
      |     ^
shoes.cpp: At global scope:
shoes.cpp:45:5: error: expected unqualified-id before 'return'
   45 |     return ans;
      |     ^~~~~~
shoes.cpp:46:1: error: expected declaration before '}' token
   46 | }
      | ^