Submission #146531

#	Time	Username	Problem	Language	Result	Execution time	Memory
146531		brcode	Xylophone (JOI18_xylophone)	C++14	Compilation error	0 ms	0 KiB

xylophone

#include <iostream>
#include "xylophone.h"
using namespace std;
const int MAXN = 1e5+5;
int pairs[MAXN];
int triplets[MAXN];
int ord[MAXN][4];
int ans[MAXN];
void solve(int n){
    for(int i=1;i<n;i++){
        pairs[i] = query(i,i+1);
    }
    for(int i=1;i<n-1;i++){
        triplets[i] = query(i,i+2);
    }
    ord[1][1] = 1;
    ord[1][0] = 0;
    for(int i=1;i<n-1;i++){
        if(triplets[i] == pairs[i]+pairs[i+1]){
            ord[i+1][1] = ord[i][1];
            ord[i+1][0] = ord[i][0];
        }else{
            ord[i+1][1] = !ord[i][1];
            ord[i+1][0] = !ord[i][0];
        }
    }
    ans[1] =1;
    int holdmin = 0;
    for(int i=2;i<=n;i++){
        if(ord[i][0]){
            ans[i] = ans[i-1]+pairs[i-1];
        }else{
            ans[i] = ans[i-1]-pairs[i-1];
        }
        holdmin = min(holdmin,ans[i]);
    }
    
    for(int i=1;i<=n;i++){
        ans[i]+=holdmin;
    }
    bool ok = true;
    for(int i=1;i<n-1;i++){
        if(max(ans[i],max(ans[i+1],ans[i+2])) - min(ans[i],min(ans[i+1],ans[i+2]))!=triplets[i]){
            ok = false;
            break;
        }
    }
    if(ok){
        for(int i=1;i<=n;i++){
            answer(i,ans[i]);
        }
        return 0;
    }
    ans[1] =1;
    holdmin = 0;
    for(int i=2;i<=n;i++){
        if(ord[i][1]){
            ans[i] = ans[i-1]+pairs[i-1];
        }else{
            ans[i] = ans[i-1]-pairs[i-1];
        }
        holdmin = min(holdmin,ans[i]);
    }
    
    for(int i=1;i<=n;i++){
        ans[i]+=holdmin;
    }
    ok = true;
    for(int i=1;i<n-1;i++){
        if(max(ans[i],max(ans[i+1],ans[i+2])) - min(ans[i],min(ans[i+1],ans[i+2]))!=triplets[i]){
            ok = false;
            break;
        }
    }
    for(int i=1;i<=n;i++){
        answer(i,ans[i]);
    }
    
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:52:16: error: return-statement with a value, in function returning 'void' [-fpermissive]
         return 0;
                ^