Submission #134280

#	Time	Username	Problem	Language	Result	Execution time	Memory
134280		Runtime_error_	Sorting (IOI15_sorting)	C++14	20 / 100	4 ms	420 KiB

sorting

#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[]) {
    if(N < 2)
        return 0;
    int l =2, r =0,tr=1;
    for(int i=0;i<N;i++)
        if(S[i] != i)
            tr =0;
    if(tr)
        return 0;
    for(int i=0;i<M;i++){
        swap( S[ X[i] ],S[ Y[i] ] );
        while(S[l] == l && l<N)
            l++;
        if( l == N){

//        for(int i=0;i<N;i++)
//            cout<<S[i]<<" ";
            if(S[0] == 0 && S[1] == 1)
                return i;
            P[i]=0,Q[i] = 1;
            i++;
            return i;
        }
        int j;
        for(j=0;j<N;j++)
            if(S[j] == l)
                break;
        P[i] = l , Q[i] = j;
        swap(S[l],S[j]);
    }

}

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:8:15: warning: unused variable 'r' [-Wunused-variable]
     int l =2, r =0,tr=1;
               ^
sorting.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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