Submission #742028

#	Time	Username	Problem	Language	Result	Execution time	Memory
742028		vjudge1	Gap (APIO16_gap)	C++17	Compilation error	0 ms	0 KiB

gap

#include <stdio.h>
#include <stdlib.h>

#include "gap.h"

static void my_assert(int k){ if (!k) exit(1); }

static int subtask_num, N;
static long long A[100001];
static long long call_count;

void MinMax(long long s, long long t, long long *mn, long long *mx)
{
	int lo = 1, hi = N, left = N+1, right = 0;
	my_assert(s <= t && mn != NULL && mx != NULL);
	while (lo <= hi){
		int mid = (lo+hi)>>1;
		if (A[mid] >= s) hi = mid - 1, left = mid;
		else lo = mid + 1;
	}
	lo = 1, hi = N;
	while (lo <= hi){
		int mid = (lo+hi)>>1;
		if (A[mid] <= t) lo = mid + 1, right = mid;
		else hi = mid - 1;
	}
	if (left > right) *mn = *mx = -1;
	else{
		*mn = A[left];
		*mx = A[right];
	}
	if (subtask_num == 1) call_count++;
	else if (subtask_num == 2) call_count += right-left+2;
}

#include "gap.h"
#include<bits/stdc++.h>
using namespace std;

long long findGap(int T, int N){
	long long l = 0, r = 1e18;
	vector<long long>a;
	long long mn, mx;
	long long L[N+1], R[N+1];
	MinMax(l, r, &mn, &mx);
	long long len = mx-mn+1;
	R[0] = mn-1;
	for(int i=1; i<N; i++){
		L[i] = R[i-1] + 1;
		R[i] = L[i] + len/(N-1);
		if(i > len%(N-1)) R[i]--;
		MinMax(L[i], R[i], &mn, &mx);
		a.push_back(mn);
		a.push_back(mx);
	}
	long long ans = (len+N-2) / (N-1);
	sort(a.begin(), a.end());
	for(int i=1; i<a.size(); i++) ans = max(ans, a[i]-a[i-1]);
	return ans;
}

int main(){
	FILE *in = stdin, *out = stdout;
	my_assert(2 == fscanf(in, "%d%d", &subtask_num, &N));
	my_assert(1 <= subtask_num && subtask_num <= 2);
	my_assert(2 <= N && N <= 100000);
	for (int i=1;i<=N;i++) my_assert(1 == fscanf(in, "%lld", A+i));
	for (int i=1;i<N;i++) my_assert(A[i] < A[i+1]);
	fprintf(out, "%lld\n", findGap(subtask_num, N));
	fprintf(out, "%lld\n", call_count);
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:58:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |  for(int i=1; i<a.size(); i++) ans = max(ans, a[i]-a[i-1]);
      |               ~^~~~~~~~~
/usr/bin/ld: /tmp/cccBEFl4.o: in function `MinMax(long long, long long, long long*, long long*)':
grader.cpp:(.text+0x0): multiple definition of `MinMax(long long, long long, long long*, long long*)'; /tmp/cctJsjc7.o:gap.cpp:(.text+0x3a0): first defined here
/usr/bin/ld: /tmp/cccBEFl4.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cctJsjc7.o:gap.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status