제출 #317062

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
317062		daniel920712	DEL13 (info1cup18_del13)	C++14	6 / 100	8 ms	512 KiB

del13

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <queue>
#include <map>

using namespace std;
int all[100005];
vector < int > tt;
int T,N,M;
int F(int l,int r)
{
    int x,ok=1,i;
    tt.clear();
    for(i=l;i<=r;i++)
    {
        if(i==0)
        {
            if(all[i]!=1) tt.push_back(all[i]-1);
        }
        else if(all[i]-all[i-1]-1) tt.push_back(all[i]-all[i-1]-1);
    }
    if(r==M-1)
    {
        if(all[r]!=N) tt.push_back(N-all[r]);
    }
    else if(all[r+1]-all[r]-1)
    {
        tt.push_back(all[r+1]-all[r]-1);
    }

    if(tt.empty()) return 1;
    if(tt.size()==1) return 0;
    x=tt[0]%2;
    for(auto i:tt)
    {
        if(x!=i%2) return 0;
    }
    return 1;

}
int main()
{
    int i,j,con,xx=0,ok=1,last;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%d %d",&N,&M);
        ok=1;
        last=0;
        for(i=0;i<M;i++) scanf("%d",&all[i]);
        if((N-M)%2) printf("-1\n");
        else
        {

            for(i=1;i<M;i++)
            {
                if(all[i]-all[i-1]==1)
                {
                    ok=ok&F(last,i-1);
                    last=i;
                }
            }
            ok=ok&&F(last,M-1);
            printf("%d\n",ok-1);
        }
    }

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

del13.cpp: In function 'int F(int, int)':
del13.cpp:14:11: warning: unused variable 'ok' [-Wunused-variable]
   14 |     int x,ok=1,i;
      |           ^~
del13.cpp: In function 'int main()':
del13.cpp:45:11: warning: unused variable 'j' [-Wunused-variable]
   45 |     int i,j,con,xx=0,ok=1,last;
      |           ^
del13.cpp:45:13: warning: unused variable 'con' [-Wunused-variable]
   45 |     int i,j,con,xx=0,ok=1,last;
      |             ^~~
del13.cpp:45:17: warning: unused variable 'xx' [-Wunused-variable]
   45 |     int i,j,con,xx=0,ok=1,last;
      |                 ^~
del13.cpp:46:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   46 |     scanf("%d",&T);
      |     ~~~~~^~~~~~~~~
del13.cpp:49:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   49 |         scanf("%d %d",&N,&M);
      |         ~~~~~^~~~~~~~~~~~~~~
del13.cpp:52:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   52 |         for(i=0;i<M;i++) scanf("%d",&all[i]);
      |                          ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 0 / 15
• Subtask 3: 6 / 15
• Subtask 4: 0 / 25
• Subtask 5: 0 / 30