Submission #832326

#	Time	Username	Problem	Language	Result	Execution time	Memory
832326		radaiosm7	Inside information (BOI21_servers)	C++98	0 / 100	26 ms	980 KiB

servers

#include <bits/stdc++.h>
using namespace std;
#define X first
#define Y second
int n, k, i, a, b;
char quer;
int par[120005];
bitset<120001> bts[120005];

int main() {
  scanf("%d%d", &n, &k);

  for (i=1; i <= n; ++i) {
    bts[i].set(i);
    par[i] = i;
  }

  for (i=1; i <= n+k-1; ++i) {
    scanf("\n%c", &quer);

    if (quer == 'S') {
      scanf("%d%d", &a, &b);
      if (bts[par[a]].count() < bts[par[b]].count()) swap(a, b);
      bts[par[a]] = bts[par[a]]|bts[par[b]];
      par[b] = par[a];
    }

    else if (quer == 'Q') {
      scanf("%d%d", &a, &b);
      if (bts[par[a]][b]) printf("yes\n");
      else printf("no\n");
    }

    else {
      scanf("%d", &a);
      printf("0\n");
    }
  }
}

Compilation message (stderr)

servers.cpp: In function 'int main()':
servers.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |   scanf("%d%d", &n, &k);
      |   ~~~~~^~~~~~~~~~~~~~~~
servers.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     scanf("\n%c", &quer);
      |     ~~~~~^~~~~~~~~~~~~~~
servers.cpp:22:12: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |       scanf("%d%d", &a, &b);
      |       ~~~~~^~~~~~~~~~~~~~~~
servers.cpp:29:12: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |       scanf("%d%d", &a, &b);
      |       ~~~~~^~~~~~~~~~~~~~~~
servers.cpp:35:12: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |       scanf("%d", &a);
      |       ~~~~~^~~~~~~~~~

• Subtask 1: 0 / 2.5
• Subtask 2: 0 / 2.5
• Subtask 3: 0 / 2.5
• Subtask 4: 0 / 2.5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 12.5
• Subtask 10: 0 / 12.5
• Subtask 11: 0 / 17.5
• Subtask 12: 0 / 17.5