제출 #206051

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
206051		Segtree	정렬하기 (IOI15_sorting)	C++14	54 / 100	1090 ms	504 KiB

sorting

#include"sorting.h"
#include<bits/stdc++.h>
#include<iostream>
#include<algorithm>
#include<vector>
#include<queue>
using namespace std;
typedef long long ll;
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)
#define all(x) x,begin(),x.end()
#define rep(i,n) for(int i=0;i<n;i++)
#define mod 1000000007
#define mad(a,b) a=(a+b)%mod
int findSwapPairs(int N,int S[],int M,int X[],int Y[],int P[],int Q[]){
	bool sorted=1;
	rep(i,N)sorted&=(S[i]==i);
	if(sorted)return 0;
	
	int ss[2010];
	rep(i,N)ss[i]=S[i];
	int R=0;
	for(;;R++){
		swap(S[X[R]],S[Y[R]]);
		ll cnt=0,s[2010];
		rep(i,N)s[i]=S[i];
		rep(i,N){
			ll p;
			rep(j,N)if(i==s[j])p=j;
			if(i!=p){
				P[cnt]=s[i],Q[cnt]=s[p];
				cnt++;
				swap(s[i],s[p]);
			}
		}
		if(cnt<=R+1){
			R++;
			for(;cnt<R;cnt++)P[cnt]=Q[cnt]=0;
			for(int i=0;i<R;i++){
				swap(ss[X[i]],ss[Y[i]]);
				ll place_p,place_q;
				rep(j,N){
					if(ss[j]==P[i])place_p=j;
					if(ss[j]==Q[i])place_q=j;
				}
				swap(ss[place_p],ss[place_q]);
				P[i]=place_p,Q[i]=place_q;
			}
			return R;
		}
	}
	return -1;
}
/*
int main(){
	int n,s[100],m,x[1000],y[1000],p[1000],q[1000];
	cin>>n;
	rep(i,n)cin>>s[i];
	cin>>m;
	rep(i,m){
		cin>>x[i]>>y[i];
	}
	cout<<"R="<<findSwapPairs(n,s,m,x,y,p,q)<<endl;
}*/

컴파일 시 표준 에러 (stderr) 메시지

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:31:15: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
     P[cnt]=s[i],Q[cnt]=s[p];
            ~~~^
sorting.cpp:31:27: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
     P[cnt]=s[i],Q[cnt]=s[p];
                        ~~~^
sorting.cpp:47:10: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
     P[i]=place_p,Q[i]=place_q;
          ^~~~~~~
sorting.cpp:47:23: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
     P[i]=place_p,Q[i]=place_q;
                       ^~~~~~~
sorting.cpp:15:37: warning: unused parameter 'M' [-Wunused-parameter]
 int findSwapPairs(int N,int S[],int M,int X[],int Y[],int P[],int Q[]){
                                     ^
sorting.cpp:30:4: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(i!=p){
    ^~

• Subtask 1: 8 / 8
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 0 / 20
• Subtask 6: 0 / 26