#include <cstdio>
#include <algorithm>
#include <ctime>
#include <utility>
#include <vector>
#include <functional>
using namespace std;
int main(){
//freopen("input.txt","r",stdin);
clock_t start_time, end_time;
start_time = clock();
int n,m;scanf("%d %d",&n,&m);
int *a[1000];
for(int i=0;i<n;i++)a[i]=new int[1000];
for(int i=0;i<n;i++)
for(int j=0;j<m;j++)
scanf("%d",&a[i][j]);
for(int i=0;i<n;i++)
sort(a[i],a[i]+m);
int ans=987654321;
int p[1000];
for(int i=0;i<n;i++)p[i]=0;
pair<int,int> tmp[1000];
for(int i=0;i<n;i++)tmp[i]=make_pair(a[i][p[i]],i);
int max=0;
for(int i=0;i<n;i++)if(max<a[i][p[i]])max=a[i][p[i]];
vector<pair<int,int> >min(tmp,tmp+n);
make_heap(min.begin(),min.end(),greater<pair<int,int> >());
while(1){
if(ans>max-min.front().first)ans=max-min.front().first;
int idx=min.front().second;
if(p[idx]==m-1)break;
//printf("%d %d\n",idx,p[idx]);
p[idx]++;
if(a[idx][p[idx]]>max)max=a[idx][p[idx]];
pop_heap (min.begin(),min.end(),greater<pair<int,int> >()); min.pop_back();
min.push_back(make_pair(a[idx][p[idx]],idx)); push_heap(min.begin(),min.end(),greater<pair<int,int> >());
}
end_time = clock();
//printf("Time : %f\n", ((double)(end_time-start_time)) / CLOCKS_PER_SEC);
printf("%d\n",ans);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
2 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
3 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
4 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
5 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
2 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
3 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
4 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
5 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
2 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
3 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
4 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
5 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
6 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
7 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
8 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
9 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |
10 |
Runtime error |
0 ms |
904 KB |
times (syscall #100) was called by the program (disallowed syscall) |