Submission #856425

#	Time	Username	Problem	Language	Result	Execution time	Memory
856425		Niktop	Tug of War (BOI15_tug)	C++14	18 / 100	829 ms	1628 KiB

tug

#include <bits/stdc++.h>

using namespace std;

#define int long long
#define pii pair<int,int>
#define F first
#define S second
#define pb push_back
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#pragma GCC optimize ("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize ("-O2")

const int N = 2e6+6;

int32_t main()
{
    int n, k;
    cin >> n >> k;
    int l[n*2], r[n*2], s[2*n];
    for (int i = 0 ;i < 2*n; i++)
        cin >> l[i] >> r[i] >> s[i];
    for (int i = 0; i < (1 << (2*n)); i++)
    {
        int x[2*n];
        int kk = i;
        for (int j = 0; j < 2*n; j++)
            x[j] = kk % 2, kk /= 2;
        set<int> s1,s2;
        int sum1 = 0, sum2 = 0;
        for (int j = 0; j < 2*n; j++)
        {
            if (x[j] == 1)
                s1.insert(l[j]), sum1 += s[j];
            else
                s2.insert(r[j]), sum2 += s[j];
        }
        if (s1.size() == n && s2.size() == n && abs(sum1 - sum2) <= k)
        {
            cout << "YES";
            return 0;
        }
    }
    cout << "NO";

}

Compilation message (stderr)

tug.cpp: In function 'int32_t main()':
tug.cpp:39:23: warning: comparison of integer expressions of different signedness: 'std::set<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   39 |         if (s1.size() == n && s2.size() == n && abs(sum1 - sum2) <= k)
      |             ~~~~~~~~~~^~~~
tug.cpp:39:41: warning: comparison of integer expressions of different signedness: 'std::set<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   39 |         if (s1.size() == n && s2.size() == n && abs(sum1 - sum2) <= k)
      |                               ~~~~~~~~~~^~~~

• Subtask 1: 18 / 18
• Subtask 2: 0 / 30
• Subtask 3: 0 / 23
• Subtask 4: 0 / 29