#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;
static int A[5000];
int answ[5010][5010];
int temp[5010];
int cnt[5010];
int aask(int i, int j) {
if(answ[i][j] == -1) return answ[i][j] = query(i, j);
else return answ[i][j];
}
void detect_pitch(int N) {
memset(answ,-1,sizeof(answ));
for(int i=0;i<N;i++) {
memset(temp,0,sizeof(temp));
temp[i] = 0;
if(i<N-1) {
int c = aask(i, i+1);
temp[i+1] = c;
for(int j=i+2;j<N;j++) {
int a1 = aask(j-1, j);
int a2 = aask(j-2, j);
int a3 = aask(j-2, j-1);
if(a2 == a3) {
if(temp[j-1] > temp[j-2]) temp[j] = temp[j-1] - a1;
else if(temp[j-1] < temp[j-2]) temp[j] = temp[j-1] + a1;
}
else if(a2 == a1) {
if(temp[j-1] < temp[j-2]) temp[j] = temp[j-1] + a1;
else if(temp[j-1] > temp[j-2]) temp[j] = temp[j-1] - a1;
}
else {
if(temp[j-1] > temp[j-2]) temp[j] = temp[j-1] + a1;
else if(temp[j-1] < temp[j-2]) temp[j] = temp[j-1] - a1;
}
}
}
if(i>=1) {
int c = aask(i-1, i);
temp[i-1] = c;
for(int j=i-2;j>=0;j--) {
int a1 = aask(j, j+1);
int a2 = aask(j+1, j+2);
int a3 = aask(j, j+2);
if(a3 == a2) {
// temp[j] is M
if(temp[j+1] > temp[j+2]) temp[j] = temp[j+1] - a1;
else if(temp[j+1] < temp[j+2]) temp[j] = temp[j+1] + a1;
}
else if(a3 == a1) {
// temp[j] is L or S
if(temp[j+1] > temp[j+2]) temp[j] = temp[j+1] - a1;
else if(temp[j+1] < temp[j+2]) temp[j] = temp[j+1] + a1;
}
else {
if(temp[j+1] > temp[j+2]) temp[j] = temp[j+1] + a1;
else if(temp[j+1] < temp[j+2]) temp[j] = temp[j+1] - a1;
}
}
}
bool valid = true;
for(int j=0;j<N;j++) {
if(temp[j] < 0 || temp[j] > N) valid = false;
}
memset(cnt,0,sizeof(cnt));
if(valid) {
for(int j=0;j<N;j++) {
cnt[temp[j]]++;
}
for(int j=0;j<N;j++) {
if(cnt[j] != 1) valid = false;
}
}
if(valid) {
for(int j=0;j<N;j++) {
answer(j, temp[j]);
}
break;
}
}
}
Compilation message
xylophone.cpp:4:12: warning: 'A' defined but not used [-Wunused-variable]
static int A[5000];
^
/tmp/cc4jwifQ.o: In function `main':
grader.cpp:(.text.startup+0x28): undefined reference to `solve(int)'
collect2: error: ld returned 1 exit status
