Submission #717345

#	Time	Username	Problem	Language	Result	Execution time	Memory
717345		vjudge1	Table Tennis (info1cup20_tabletennis)	C++17	0 / 100	94 ms	13484 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
#define int long long
const int sz = 4e5 + 5;
const int mod = 1e9 + 7;
signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n, m;
    cin >> n >> m;
    vector<int>v(n + m);
    map<int, int>mp;
    for (int i = 0; i < n + m; i++) {
        cin >> v[i];
        mp[v[i]] = i + 1;
    }
    sort(all(v));
    vector<int>ans;
    vector<int>a, b;
    int l = 0, r = n - 1;
    int x = 0;
    while (l < r) {
        if (x % 2 == 0) {
            a.push_back(v[l]);
            a.push_back(v[r]);
        }
        else {
            b.push_back(v[l]);
            b.push_back(v[r]);
        }
        l++;
        r--;
        x++;
    }
    int sum1 = 0, sum2 = 0;
    for (auto i : a) {
        sum1 += i;
    }
    for (auto i : b) {
        sum2 += i;
    }
    if (sum1 == sum2) {
        for (int i = 0; i < n; i++)cout << mp[v[i]] << ' ';
    }
    else {
        int x = sum1 - sum2;
        for (int i = 0; i < a.size();i++) {
            if (v[n] - a[i] == -x) {
                a[i] = v[n];
                x = 0;
            }
        }
        for (int i = 0; i < b.size(); i++) {
            if (v[n] - b[i] == x) {
                b[i] = v[n];
                x = 0;
            }
        }
        for (auto i : a)cout << mp[i] << ' ';
        for (auto i : b)cout << mp[i] << ' ';

    }
    return 0;
}

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:48:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         for (int i = 0; i < a.size();i++) {
      |                         ~~^~~~~~~~~~
tabletennis.cpp:54:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for (int i = 0; i < b.size(); i++) {
      |                         ~~^~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 9
• Subtask 6: 0 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13