Submission #381053

#	Time	Username	Problem	Language	Result	Execution time	Memory
381053		ritul_kr_singh	Xylophone (JOI18_xylophone)	C++17	Compilation error	0 ms	0 KiB

xylophone

#include "xylophone.h"
#include "bits/stdc++.h"
using namespace std;

static int A[5000];

void solve(int n){

	int value = query(1, N);

	for(int i = 1; i <= N; i++) {
		answer(i, i);
	}
	int a[n][2];
	a[0][0] = a[1][0] = 0;
	a[0][1] = query(1, 2);
	a[1][1] = -a[0][1];

	for(int i=2; i<=n; ++i){
		int res0 = query(i-2, i), res1 = query(i-1, i);
		for(int j=0; j<2; ++j){
			int x = a[j][i-2], y = a[j][i-1];
			int &z = a[j][i];
			if(x<y){
				if(res1<=y-x){
					z = res0 > y-x ? y + res1 : y - res1;
				}else{
					z = res0 > res1 ? y + res1 : y - res1;
				}
			}else{
				if(res1<=x-y){
					z = res0 > x-y ? y - res1 : y + res1;
				}else{
					z = res0 > res1 ? y - res1 : y + res1;
				}
			}
		}
	}
	for(int j=0; j<2; ++j){
		int add = *min_element(a[j], a[j]+n);
		add = 1-add;
		bool ok = true;
		int leastPos, greatestPos, cnt[n];
		for(int i=0; i<n; ++i) a[j][i] += add;
		for(int i=0; i<n and ok; ++i){
			if(1<=a[j][i] and a[j][i]<=n and !cnt[a[j][i]-1]){
				++cnt[a[j][i]-1];
			}else ok = false;
			if(a[j][i]==1) leastPos = i;
			if(a[j][i]==n) greatestPos = i;
		}
		// ok = ok and (leastPos<greatestPos);
		if(ok){
			for(int i=0; i<n; ++i) answer(i+1, a[j][i]);
			return;
		}
	}
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:9:23: error: 'N' was not declared in this scope
    9 |  int value = query(1, N);
      |                       ^
xylophone.cpp:9:6: warning: unused variable 'value' [-Wunused-variable]
    9 |  int value = query(1, N);
      |      ^~~~~
xylophone.cpp: At global scope:
xylophone.cpp:5:12: warning: 'A' defined but not used [-Wunused-variable]
    5 | static int A[5000];
      |            ^