제출 #667646

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
667646		ar_paixaos19	Table Tennis (info1cup20_tabletennis)	C++14	0 / 100	29 ms	2936 KiB

tabletennis

#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
using namespace std;

const int MAXN = 150010;
const int MAXK = 410;

int v[MAXN + MAXK];
bool mark[MAXN];
vector<pair<int, int>> resp(MAXN);

bool busca(int i, int j, int n){
    resp.clear();
    resp.pb(mp(i, j));
    //printf("estou testando o meio %d %d\n", i, j);
    int s = v[i] + v[j];
    int q = j + 1;
    int qtd = 1;
    for(int p = i - 1; p >= 1; p--){
        while(v[p] + v[q] < s && q <= 2 * n){
            q++;
        }
        if(v[p] + v[q] == s){
            //printf("v[%d] + v[%d] funcionou\n", p, q);
            resp.pb(mp(p, q));
            qtd++;
            q++;
        }
        if(qtd == n){
            //printf("acabei o prob com meio %d %d\n", i, j);
            return true;
        }
    }
    return false;
}

int main(){
    int N, k; scanf("%d %d", &N, &k);
    for(int i = 1; i <= N + k; i++){
        scanf("%d", &v[i]);
    }

    int n = N / 2;

    bool achou = false;
    for(int i = n; i <= n + k, !achou; i++){
        for(int j = i + 1; j <= n + k + 1; j++){
            if(busca(i, j, n)){
                achou = true;
                //printf("achou %d %d\n", i, j);
                break;
            }
        }
    }

    sort(resp.begin(), resp.end());

    for(int i = 0; i < n; i++){
        printf("%d ", resp[i].first);
    }
    for(int i = n - 1; i >= 0; i--){
        printf("%d ", resp[i].second);
    }
    printf("\n");
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:47:22: warning: left operand of comma operator has no effect [-Wunused-value]
   47 |     for(int i = n; i <= n + k, !achou; i++){
      |                    ~~^~~~~~~~
tabletennis.cpp:39:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     int N, k; scanf("%d %d", &N, &k);
      |               ~~~~~^~~~~~~~~~~~~~~~~
tabletennis.cpp:41:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         scanf("%d", &v[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