제출 #898130

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
898130		math_rabbit_1028	Triangles (CEOI18_tri)	C++14	컴파일 에러	0 ms	0 KiB

tri

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "trilib.h"

static int n;
static long long *x, *y;
static int queries=0;

static void init() {
	static int is_inited=0;
	if (is_inited)
		return;
	is_inited=1;
	assert(scanf("%d", &n)==1);
	x=(long long*)malloc((n+1)*sizeof(long long));
	y=(long long*)malloc((n+1)*sizeof(long long));
	for (int i=1; i<=n; i++)
		assert(scanf("%lld%lld", &x[i], &y[i])==2);
}

int get_n() {
	init();
	return n;
}

int is_clockwise(int a, int b, int c) {
	init();
	assert(a>=1 && a<=n);
	assert(b>=1 && b<=n);
	assert(c>=1 && c<=n);
	assert(a!=b && a!=c && b!=c);
	queries++;
        if(queries == 1000 * 1000 + 1)
            printf("Too many queries!");
	return (x[b]-x[a])*(y[c]-y[a])-(x[c]-x[a])*(y[b]-y[a])<0;
}

void give_answer(int s) {
	init();
	printf("%d\n", s);
}

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/ccnR0nX9.o: in function `get_n':
tri.cpp:(.text+0x120): multiple definition of `get_n'; /tmp/ccajE7W5.o:trilib.c:(.text+0x120): first defined here
/usr/bin/ld: /tmp/ccnR0nX9.o: in function `is_clockwise':
tri.cpp:(.text+0x190): multiple definition of `is_clockwise'; /tmp/ccajE7W5.o:trilib.c:(.text+0x190): first defined here
/usr/bin/ld: /tmp/ccnR0nX9.o: in function `give_answer':
tri.cpp:(.text+0x2f0): multiple definition of `give_answer'; /tmp/ccajE7W5.o:trilib.c:(.text+0x2f0): first defined here
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/10/../../../x86_64-linux-gnu/crt1.o: in function `_start':
(.text+0x24): undefined reference to `main'
collect2: error: ld returned 1 exit status