Submission #233575

#	Time	Username	Problem	Language	Result	Execution time	Memory
233575		Basilhijaz	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KiB

shoes

#include "shoes.h"

using namespace std;
typedef long long ll;

#define FAST ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define mp make_pair
#define pb push_back
#define lp(i,s,f) for(ll i = s; i < ll(f); i++)
#define inF freopen("input.in", "r", stdin);
#define outF freopen("output.in", "w", stdout);
#define endl '\n'
#define MOD 1000000007

long long count_swaps(vector<int> s) {
    int n = s.size();
    vector<pair<int, int> > v;
    bool done[n];
    memset(done, 0, sizeof(done));
    for(int i = 0; i < n; i++){
        if(!done[i]){
            int serach = s[i]*-1;
            int first = -1; int second = -1;
            first = i;
            for(int j = i + 1; j < n; j++){
                if(s[j] == serach){
                    second = j;
                    done[j] = 1;
                    break;
                }
            }
            v.pb({first, second});
        }
    }
    ll ans = 0;
    memset(done, 0, sizeof(done));
    for(int i = 0; i < v.size(); i++){
        if(s[v[i].first] > s[v[i].second]){
            ans++;
        }
    }
    for(int i = 0; i < v.size(); i++){
        done[v[i].second] = 1;

        for(int j = v[i].first + 1; j < v[i].second; j++){
            if(!done[j])ans++;
        }
    }
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:19:5: error: 'memset' was not declared in this scope
     memset(done, 0, sizeof(done));
     ^~~~~~
shoes.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < v.size(); i++){
                    ~~^~~~~~~~~~
shoes.cpp:42:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < v.size(); i++){
                    ~~^~~~~~~~~~