oj.uz

Submission #882297

# Submission time Handle Problem Language Result Execution time Memory
882297 2023-12-03T03:22:23 Z Requiem Potatoes and fertilizers (LMIO19_bulves) C++17
24 / 100
 69 ms 13144 KB 
#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 1000000007
#define INF 1e18
#define fi first
#define se second
#define endl "\n"
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define pi 3.14159265359
#define TASKNAME "bulves"
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; } 
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; } 
using namespace std; 
typedef pair<int,int> ii; 
typedef pair<int,ii> iii; 
typedef vector<int> vi; 
const int MAXN = 5e5 + 9;
int n;
int a[MAXN],b[MAXN],A,B;
main() 
{ 
    fast; 
   if (fopen(TASKNAME".inp","r")){
        freopen(TASKNAME".inp","r",stdin); 
        freopen(TASKNAME".out","w",stdout); 
   }
   cin>>n;
   for(int i=1;i<=n;i++){
       cin>>a[i]>>b[i];
       A += a[i];
       B += b[i];
   } 
   if (A == B){
       int ans = 0, bring = 0;
       for(int i=1;i<=n;i++){
           ans += abs(bring);
           if (a[i] == b[i]) continue;
           if (a[i] < b[i]) bring -= b[i] - a[i];
           else bring += a[i] - b[i];
       }
       cout<<ans<<endl;
   }
}

Compilation message

bulves.cpp:24:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   24 | main()
      | ^~~~
bulves.cpp: In function 'int main()':
bulves.cpp:28:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |         freopen(TASKNAME".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
bulves.cpp:29:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |         freopen(TASKNAME".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 6 ms 6748 KB Output is correct
5 Correct 10 ms 6748 KB Output is correct
6 Correct 31 ms 6748 KB Output is correct
7 Correct 69 ms 10576 KB Output is correct
8 Correct 53 ms 13144 KB Output is correct
9 Correct 52 ms 12284 KB Output is correct
10 Correct 37 ms 9972 KB Output is correct
11 Correct 37 ms 10100 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 6 ms 6748 KB Output is correct
5 Correct 10 ms 6748 KB Output is correct
6 Correct 31 ms 6748 KB Output is correct
7 Correct 69 ms 10576 KB Output is correct
8 Correct 53 ms 13144 KB Output is correct
9 Correct 52 ms 12284 KB Output is correct
10 Correct 37 ms 9972 KB Output is correct
11 Correct 37 ms 10100 KB Output is correct
12 Incorrect 16 ms 8284 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Incorrect 0 ms 2396 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Incorrect 0 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Incorrect 0 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -