Submission #375901

#	Time	Username	Problem	Language	Result	Execution time	Memory
375901		daniel920712	Naan (JOI19_naan)	C++14	100 / 100	1433 ms	164516 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]={0};
vector < pair < long long , long long > > ans;
vector < long long > ans2;
bool have[2005]={0};
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)
{
    if(a.first.first/a.first.second>b.first.first/b.first.second) return 0;
    if(a.first.first/a.first.second<b.first.first/b.first.second) return 1;
    return a.first.first%a.first.second*b.first.second<b.first.first%b.first.second*a.first.second;
}
int main()
{
    //freopen("03-02.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++)
    {
        ok=0;
        for(auto j:where[i])
        {
            if(have[j.second]||x1/y1>j.first.first/j.first.second||x1/y1==j.first.first/j.first.second&&(x1%y1*j.first.second)>(j.first.first%j.first.second*y1)) continue;
            ok=1;
            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;
        }
        if(!ok) 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);
    //for(i=0;i<N-1;i++) printf("%.10f\n",(double) ans[i].first/(double) ans[i].second);
    //printf("%lld\n",M);
    return 0;
}

Compilation message (stderr)

naan.cpp: In function 'int main()':
naan.cpp:68:103: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   68 |             if(have[j.second]||x1/y1>j.first.first/j.first.second||x1/y1==j.first.first/j.first.second&&(x1%y1*j.first.second)>(j.first.first%j.first.second*y1)) continue;
      |                                                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
naan.cpp:30:19: warning: unused variable 'a' [-Wunused-variable]
   30 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                   ^
naan.cpp:30:21: warning: unused variable 'b' [-Wunused-variable]
   30 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                     ^
naan.cpp:30:35: warning: unused variable 'c' [-Wunused-variable]
   30 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                   ^
naan.cpp:30:52: warning: unused variable 'z' [-Wunused-variable]
   30 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                    ^
naan.cpp:30:54: warning: unused variable 'x3' [-Wunused-variable]
   30 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                      ^~
naan.cpp:30:57: warning: unused variable 'y3' [-Wunused-variable]
   30 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                         ^~
naan.cpp:30:60: warning: unused variable 't' [-Wunused-variable]
   30 |     long long N,M,a,b,x1,y1,x2,y2,c,i,j,ok=1,now=0,z,x3,y3,t;
      |                                                            ^
naan.cpp:31:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   31 |     scanf("%lld %lld",&N,&M);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
naan.cpp:37:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |             scanf("%lld",&all[i][j]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~

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