제출 #683498

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
683498		JooDdae	Table Tennis (info1cup20_tabletennis)	C++17	0 / 100	30 ms	3972 KiB

tabletennis

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int n, k, a[200200];

int main(){
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> k;
    for(int i=1;i<=n+k;i++) cin >> a[i];

    for(int A=0;A<=k;A++) for(int B=0;A+B<=k;B++) {
        int L = A+1, R = n+k-B;
        int S = a[L] + a[R];

        int l = L+1, r = R-1;
        vector<array<int, 2>> v = {{L, R}};
        while(l < r) {
            if(a[l] + a[r] == S) {
                v.push_back({l, r});
                l++, r--;
                continue;
            }

            if(S-a[l] > a[r]) l++;
            else r--;
        }

        if(v.size() >= n/2) {
            for(int i=0;i<n/2;i++) cout << v[i][0] << " ";
            for(int i=n/2-1;i>=0;i--) cout << v[i][1] << " ";

            for(int i=0;i<n/2;i++) assert(a[v[i][0]]+a[v[i][1]] == S);
            return 0;
        }
    }

    assert(0);
}

컴파일 시 표준 에러 (stderr) 메시지

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:29:21: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   29 |         if(v.size() >= n/2) {
      |            ~~~~~~~~~^~~~~~

• 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