Submission #375230

#	Time	Username	Problem	Language	Result	Execution time	Memory
375230		daniel920712	Naan (JOI19_naan)	C++14	0 / 100	5 ms	512 KiB

naan

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <algorithm>

using namespace std;

long long all[2005][2005];
long long sum[2005][2005]={0};
long long tt[2005];
vector < pair < long long , long long > > ans;
int main()
{
    long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0;
    scanf("%lld %lld",&N,&M);
    for(i=0;i<N;i++)
    {
        sum[i][0]=0;
        for(j=0;j<M;j++)
        {
            scanf("%lld",&all[i][j]);
            sum[i][j]=sum[i][j-1]+all[i][j];
        }
    }

    for(i=0;i<N;i++) tt[i]=i;

    do
    {
        ans.clear();
        x1=0;
        y1=1;
        now=0;
        for(i=0;i<M;i++)
        {
            if(N*(x1+all[tt[now]][i]*y1)>=y1*sum[tt[now]][M-1])
            {
                //printf("%lld %lld %lld %lld\n",(x1+all[tt[now]][i]*y1),y1,sum[tt[now]][M],N);
                x2=y1*sum[tt[now]][M-1]-x1*N;
                y2=y1*N*all[tt[now]][i];

                if(now<N-1)
                {
                    //printf("aa %lld %lld\n",now,i);
                    ans.push_back(make_pair(x2+i*y2,y2));
                }
                y1=y2;
                x1=y2-x2;

                if(now!=N) now++;

            }
            else x1+=all[tt[now]][i]*y1;
            //printf("%lld %lld %lld %lld\n",i,now,x1,y1);

        }

        if(now==N)
        {
            for(auto i:ans) printf("%lld %lld\n",i.first,i.second);
            for(i=0;i<N;i++) printf("%lld ",tt[i]+1);
            return 0;
        }

    }while(next_permutation(tt,tt+N));
    printf("-1\n");
    return 0;
}

Compilation message (stderr)

naan.cpp: In function 'int main()':
naan.cpp:15:19: warning: unused variable 'a' [-Wunused-variable]
   15 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0;
      |                   ^
naan.cpp:15:21: warning: unused variable 'b' [-Wunused-variable]
   15 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0;
      |                     ^
naan.cpp:15:35: warning: unused variable 'c' [-Wunused-variable]
   15 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0;
      |                                   ^
naan.cpp:15:41: warning: unused variable 'ok' [-Wunused-variable]
   15 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0;
      |                                         ^~
naan.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |     scanf("%lld %lld",&N,&M);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
naan.cpp:22:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |             scanf("%lld",&all[i][j]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 24
• Subtask 3: 0 / 71