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Submission #46602

# Submission time Handle Problem Language Result Execution time Memory
46602 2018-04-22T08:24:49 Z Talant Boat (APIO16_boat) C++17
0 / 100
 2000 ms 544 KB 
#include <bits/stdc++.h>

#define mk make_pair
#define sc second
#define fr first
#define pb emplace_back
#define all(s) s.begin(), s.end()
#define sz(s) ( (int)s.size() )

using namespace std;

const int inf = (int)1e9 + 7;
const int N = (int)2e5 + 7;

int n;
long long ans;
long long a[N],b[N];


main () {
      cin >> n;

      for (int i = 1; i <= n; i ++) {
            cin >> a[i] >> b[i];
      }
      for (int i = n; i >= 1; i --) {
            ans = (ans + (b[i] - a[i] + 1)) % inf;
            if (i == n)
                  continue;
            for (int j = a[i]; j <= b[i]; j ++) {
                  for (int l = i + 1; l <= n; l ++) {
                        ans = (ans + max(b[l] - max(j*1ll + 1,a[l]) + 1,0ll)) % inf;
                  }
            }
      }
      cout << ans << endl;
}

Compilation message

boat.cpp:20:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 2086 ms 544 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -