oj.uz

Submission #764563

# Submission time Handle Problem Language Result Execution time Memory
764563 2023-06-23T15:18:01 Z pere_gil Logičari (COCI21_logicari) C++14
10 / 110
 15 ms 1440 KB 
#include "bits/stdc++.h"
using namespace std;

#define ll long long
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) a*b/gcd(a,b)
#define ii pair<int,int>
#define vi vector<int>
#define all(x) x.begin(),x.end()

int main(){
	int n; scanf("%d",&n);
	int u,v; 
	for(int i=0;i<n;i++) scanf("%d %d",&u,&v);

	if(n==2) printf("2\n");
	else if(n%4) printf("-1\n");
	else printf("%d\n",n/2);
	
	return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  int n; scanf("%d",&n);
      |         ~~~~~^~~~~~~~~
Main.cpp:14:28: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  for(int i=0;i<n;i++) scanf("%d %d",&u,&v);
      |                       ~~~~~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 15 ms 1428 KB Output is correct
6 Correct 14 ms 1364 KB Output is correct
7 Correct 14 ms 1412 KB Output is correct
8 Correct 14 ms 1440 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 304 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 304 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 15 ms 1428 KB Output is correct
6 Correct 14 ms 1364 KB Output is correct
7 Correct 14 ms 1412 KB Output is correct
8 Correct 14 ms 1440 KB Output is correct
9 Incorrect 1 ms 212 KB Output isn't correct
10 Halted 0 ms 0 KB -