제출 #77088

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
77088		duality	Xylophone (JOI18_xylophone)	C++11	0 / 100	2 ms	248 KiB

xylophone

#define DEBUG 0

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

#if DEBUG
// basic debugging macros
int __i__,__j__;
#define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl
#define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl
#define printVar(n) cout<<#n<<": "<<n<<endl
#define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl
#define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;}
#define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;}

// advanced debugging class
// debug 1,2,'A',"test";
class _Debug {
    public:
        template<typename T>
        _Debug& operator,(T val) {
            cout << val << endl;
            return *this;
        }
};
#define debug _Debug(),
#else
#define printLine(l)
#define printLine2(l,c)
#define printVar(n)
#define printArr(a,l)
#define print2dArr(a,r,c)
#define print2dArr2(a,r,c,l)
#define debug
#endif

// define
#define MAX_VAL 999999999
#define MAX_VAL_2 999999999999999999LL
#define EPS 1e-6
#define mp make_pair
#define pb push_back

// typedef
typedef unsigned int UI;
typedef long long int LLI;
typedef unsigned long long int ULLI;
typedef unsigned short int US;
typedef pair<int,int> pii;
typedef pair<LLI,LLI> plli;
typedef vector<int> vi;
typedef vector<LLI> vlli;
typedef vector<pii> vpii;
typedef vector<plli> vplli;

// ---------- END OF TEMPLATE ----------
#include "xylophone.h"

int ans[5000];
void solve(int N) {
    int i;
    ans[0] = 0,ans[1] = query(0,1);
    int m = 0;
    for (i = 2; i < N; i++) {
        int x = query(i-1,i),y = query(i-2,i);
        if (max(ans[i-2],ans[i-1]+x)-min(ans[i-2],ans[i-1]) == y) ans[i] = ans[i-1]+x;
        else ans[i] = ans[i-1]-x;
        m = min(m,ans[i]);
    }
    int si,bi;
    for (i = 0; i < N; i++) {
        ans[i] -= m;
        if (ans[i] == 0) si = i;
        if (ans[i] == N-1) bi = i;
    }
    if (si > bi) {
        for (i = 0; i < N; i++) ans[i] = N-1-ans[i];
    }
    for (i = 0; i < N; i++) answer(i,ans[i]);
}

컴파일 시 표준 에러 (stderr) 메시지

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:76:5: warning: 'bi' may be used uninitialized in this function [-Wmaybe-uninitialized]
     if (si > bi) {
     ^~
xylophone.cpp:76:5: warning: 'si' may be used uninitialized in this function [-Wmaybe-uninitialized]

• Subtask 1: 0 / 11
• Subtask 2: 0 / 36
• Subtask 3: 0 / 53