oj.uz

Submission #77832

# Submission time Handle Problem Language Result Execution time Memory
77832 2018-09-30T16:58:21 Z Vardanyan The Kingdom of JOIOI (JOI17_joioi) C++14
60 / 100
 4000 ms 58312 KB 
#include <bits/stdc++.h>
using namespace std;
const int N = 2007;
int a[N][N];
int n,m;
int mns = 1000*1000*1000;
bool rot(){
    vector<vector<int> > v;
    for(int i = 1;i<=n;i++){
        vector<int> u;
        for(int j = 1;j<=m;j++) u.push_back(a[i][j]);
        reverse(u.begin(),u.end());
        v.push_back(u);
    }
    for(int j = 1;j<=n;j++){
        for(int i = 0;i<v[j-1].size();i++){
            a[i+1][j] = v[j-1][i];
        }
    }
    swap(n,m);
}
bool check(int x){
    bool f = false;
    int ed = m;
    int mx = 0;
    int mn = 1000*1000*1000+5;
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=ed;j++){
            if(a[i][j]-mns>x){
                ed = j-1;
                break;
            }
        }
        for(int j = ed+1;j<=m;j++){
            mx = max(mx,a[i][j]);
            mn = min(mn,a[i][j]);
        }
    }
    if(mx-mn<=x) f = true;
    /////////////////////////
    rot();
    ed = m;
    mx = 0;
    mn = 1000*1000*1000+5;
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=ed;j++){
            if(a[i][j]-mns>x){
                ed = j-1;
                break;
            }
        }
        for(int j = ed+1;j<=m;j++){
            mx = max(mx,a[i][j]);
            mn = min(mn,a[i][j]);
        }
    }
    if(mx-mn<=x) f = true;
    /////////////////////////
    rot();
    ed = m;
    mx = 0;
    mn = 1000*1000*1000+5;
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=ed;j++){
            if(a[i][j]-mns>x){
                ed = j-1;
                break;
            }
        }
        for(int j = ed+1;j<=m;j++){
            mx = max(mx,a[i][j]);
            mn = min(mn,a[i][j]);
        }
    }
    if(mx-mn<=x) f = true;
    /////////////////////////
    rot();
    ed = m;
    mx = 0;
    mn = 1000*1000*1000+5;
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=ed;j++){
            if(a[i][j]-mns>x){
                ed = j-1;
                break;
            }
        }
        for(int j = ed+1;j<=m;j++){
            mx = max(mx,a[i][j]);
            mn = min(mn,a[i][j]);
        }
    }
    if(mx-mn<=x) f = true;
    /////////////////////////
    rot();
    /////////////////////////
    return f;
}
int main(){
    scanf("%d%d",&n,&m);
    for(int i = 1;i<=n;i++)
        for(int j = 1;j<=m;j++){
                scanf("%d",&a[i][j]);
                mns = min(mns,a[i][j]);
        }
    int l = 0;
    int r = 1000*1000*1000;
    int ans = r;
    while(l<=r){
        int mid = (l+r)/2;
        if(check(mid)){
            ans = mid;
            r = mid-1;
        }
        else l = mid+1;
    }
    cout<<ans<<endl;
    return 0;
}

Compilation message

joioi.cpp: In function 'bool rot()':
joioi.cpp:16:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i = 0;i<v[j-1].size();i++){
                       ~^~~~~~~~~~~~~~
joioi.cpp:21:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
joioi.cpp: In function 'int main()':
joioi.cpp:100:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
joioi.cpp:103:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                 scanf("%d",&a[i][j]);
                 ~~~~~^~~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 632 KB Output is correct
3 Correct 2 ms 632 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 2 ms 764 KB Output is correct
6 Correct 3 ms 764 KB Output is correct
7 Correct 2 ms 764 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 2 ms 764 KB Output is correct
10 Correct 3 ms 768 KB Output is correct
11 Correct 3 ms 768 KB Output is correct
12 Correct 3 ms 836 KB Output is correct
13 Correct 3 ms 836 KB Output is correct
14 Correct 3 ms 848 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 632 KB Output is correct
3 Correct 2 ms 632 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 2 ms 764 KB Output is correct
6 Correct 3 ms 764 KB Output is correct
7 Correct 2 ms 764 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 2 ms 764 KB Output is correct
10 Correct 3 ms 768 KB Output is correct
11 Correct 3 ms 768 KB Output is correct
12 Correct 3 ms 836 KB Output is correct
13 Correct 3 ms 836 KB Output is correct
14 Correct 3 ms 848 KB Output is correct
15 Correct 9 ms 1624 KB Output is correct
16 Correct 51 ms 2096 KB Output is correct
17 Correct 67 ms 2396 KB Output is correct
18 Correct 59 ms 2680 KB Output is correct
19 Correct 62 ms 2956 KB Output is correct
20 Correct 54 ms 3196 KB Output is correct
21 Correct 65 ms 3580 KB Output is correct
22 Correct 59 ms 3976 KB Output is correct
23 Correct 65 ms 4356 KB Output is correct
24 Correct 56 ms 4676 KB Output is correct
25 Correct 69 ms 5084 KB Output is correct
26 Correct 61 ms 5576 KB Output is correct
27 Correct 64 ms 5976 KB Output is correct
28 Correct 64 ms 6352 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 632 KB Output is correct
3 Correct 2 ms 632 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 2 ms 764 KB Output is correct
6 Correct 3 ms 764 KB Output is correct
7 Correct 2 ms 764 KB Output is correct
8 Correct 3 ms 764 KB Output is correct
9 Correct 2 ms 764 KB Output is correct
10 Correct 3 ms 768 KB Output is correct
11 Correct 3 ms 768 KB Output is correct
12 Correct 3 ms 836 KB Output is correct
13 Correct 3 ms 836 KB Output is correct
14 Correct 3 ms 848 KB Output is correct
15 Correct 9 ms 1624 KB Output is correct
16 Correct 51 ms 2096 KB Output is correct
17 Correct 67 ms 2396 KB Output is correct
18 Correct 59 ms 2680 KB Output is correct
19 Correct 62 ms 2956 KB Output is correct
20 Correct 54 ms 3196 KB Output is correct
21 Correct 65 ms 3580 KB Output is correct
22 Correct 59 ms 3976 KB Output is correct
23 Correct 65 ms 4356 KB Output is correct
24 Correct 56 ms 4676 KB Output is correct
25 Correct 69 ms 5084 KB Output is correct
26 Correct 61 ms 5576 KB Output is correct
27 Correct 64 ms 5976 KB Output is correct
28 Correct 64 ms 6352 KB Output is correct
29 Execution timed out 4016 ms 58312 KB Time limit exceeded
30 Halted 0 ms 0 KB -