제출 #298494

#제출 시각UTC-0아이디문제언어결과실행 시간메모리
2984942020-09-13 02:54:32TMJN정렬하기 (IOI15_sorting)C++17
0 / 100
1 ms384 KiB
#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
int d=0;
for(int i=0;i<N;i++){
if(S[i]!=i)d++;
}
for(int i=0;i<M;i++){
if((d+1)/2<=i)return i;
d+=(S[X[i]]==X[i])+(S[Y[i]]==Y[i]);
swap(S[X[i]],S[Y[i]]);
d-=(S[X[i]]==X[i])+(S[Y[i]]==Y[i]);
if((d+1)/2<=i+1)return i+1;
}
return -1;
}
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컴파일 시 표준 에러 (stderr) 메시지

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:5:64: warning: unused parameter 'P' [-Wunused-parameter]
    5 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                                            ~~~~^~~
sorting.cpp:5:73: warning: unused parameter 'Q' [-Wunused-parameter]
    5 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                                                     ~~~~^~~
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