Submission #375762

#	Time	Username	Problem	Language	Result	Execution time	Memory
375762		daniel920712	Naan (JOI19_naan)	C++14	29 / 100	548 ms	96364 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;
vector < long long > ans2;
bool have[2005];
vector < pair < pair < long long ,long long > , long long > > where[2005];
long long F(long long a,long long b)
{
    if(b==0) return a;
    return F(b,a%b);
}
bool cmp(pair < pair < long long ,long long > , long long > a,pair < pair < long long ,long long > , long long > b)
{
    return a.first.first*b.first.second<a.first.second*b.first.first;
}
int main()
{
    //freopen("03-03.txt","rt",stdin);
    long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
    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++)
    {
        x1=0;
        y1=1;
        now=0;

        for(j=0;j<M;j++)
        {
            while((x1+all[i][j]*y1)*N>=(sum[i][M-1])*(now+1)*y1)
            {
                x2=(sum[i][M-1])*(now+1)*y1-x1*N;
                y2=y1*N*all[i][j];
                where[now++].push_back(make_pair(make_pair(x2+j*y2,y2),i));
            }
            x1+=y1*all[i][j];
        }
    }

    for(i=0;i<N;i++) sort(where[i].begin(),where[i].end(),cmp);
    x1=0;
    y1=1;
    for(i=0;i<N;i++)
    {
        for(auto j:where[i])
        {
            if(have[j.second]||x1*j.first.second>=y1*j.first.first) continue;
            x1=j.first.first;
            y1=j.first.second;
            have[j.second]=1;
            ans.push_back(make_pair(j.first.first,j.first.second));
            ans2.push_back(j.second);
            break;
        }
    }

    for(i=1;i<N;i++)
    {
        if(ans[i].first*ans[i-1].second<=ans[i].second*ans[i-1].first) return 1;
        if(i!=N-1&&ans[i].first>=ans[i].second*M) return 1;
    }
    for(i=0;i<N-1;i++) printf("%lld %lld\n",ans[i].first,ans[i].second);
    for(auto i:ans2) printf("%lld ",i+1);
    //printf("%lld\n",M);
    return 0;
}

Compilation message (stderr)

naan.cpp: In function 'int main()':
naan.cpp:28:19: warning: unused variable 'a' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                   ^
naan.cpp:28:21: warning: unused variable 'b' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                     ^
naan.cpp:28:35: warning: unused variable 'c' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                   ^
naan.cpp:28:41: warning: unused variable 'ok' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                         ^~
naan.cpp:28:52: warning: unused variable 'z' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                    ^
naan.cpp:28:54: warning: unused variable 'x3' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                      ^~
naan.cpp:28:57: warning: unused variable 'y3' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                         ^~
naan.cpp:28:60: warning: unused variable 't' [-Wunused-variable]
   28 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                            ^
naan.cpp:29:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |     scanf("%lld %lld",&N,&M);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
naan.cpp:35:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   35 |             scanf("%lld",&all[i][j]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~

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