Submission #668366

#	Time	Username	Problem	Language	Result	Execution time	Memory
668366		ar_paixaos19	Table Tennis (info1cup20_tabletennis)	C++14	87 / 100	3058 ms	4044 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 + MAXK];
vector<pair<int, int>> resp(MAXN + MAXK);

bool busca(int i, int j, int n, int k){
    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 + k){
            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;


    int minmid = max(1,n-3), maxmid = min(N+k,n+k+3);
    for(int i = minmid; i <= maxmid && !achou; i++){
        for(int j = i+1; j <= maxmid; j++){
            if(busca(i, j, n, k)){
                achou = true;
                //printf("achou %d %d\n", i, j);
                break;
            }
        }
    }
    sort(resp.begin(), resp.end());
    if(resp.size() < n){
        printf("%dpenis%d\n", n,resp.size());
        return 0;
    }

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

Compilation message (stderr)

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:60:20: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |     if(resp.size() < n){
      |        ~~~~~~~~~~~~^~~
tabletennis.cpp:61:25: warning: format '%d' expects argument of type 'int', but argument 3 has type 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wformat=]
   61 |         printf("%dpenis%d\n", n,resp.size());
      |                        ~^       ~~~~~~~~~~~
      |                         |                |
      |                         int              std::vector<std::pair<int, int> >::size_type {aka long unsigned int}
      |                        %ld
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: 11 / 11
• Subtask 2: 9 / 9
• Subtask 3: 14 / 14
• Subtask 4: 15 / 15
• Subtask 5: 9 / 9
• Subtask 6: 14 / 14
• Subtask 7: 15 / 15
• Subtask 8: 0 / 13