Submission #733372

#TimeUsernameProblemLanguageResultExecution timeMemory
733372quanlt206Modsum (NOI12_modsum)C++14
0 / 25
2 ms340 KiB
#include<bits/stdc++.h> #define X first #define Y second #define all(x) begin(x), end(x) #define FOR(i, a, b) for(int i = (a); i <= (b); i++) #define FORD(i, b, a) for(int i = (b); i >= (a); i--) #define REP(i, a, b) for (int i = (a); i < (b); i++) #define mxx max_element #define mnn min_element #define SQR(x) (1LL * (x) * (x)) #define MASK(i) (1LL << (i)) #define Point Vector #define left Left #define right Right #define div Div using namespace std; typedef long long ll; typedef unsigned long long ull; typedef double db; typedef long double ld; typedef pair<db, db> pdb; typedef pair<ld, ld> pld; typedef pair<int, int> pii; typedef pair<int, pii> piii; typedef pair<ll, ll> pll; typedef pair<ll, pll> plll; typedef pair<ll, int> pli; typedef pair<ll, pii> plii; template<class A, class B> bool maximize(A& x, B y) { if (x < y) return x = y, true; else return false; } template<class A, class B> bool minimize(A& x, B y) { if (x > y) return x = y, true; else return false; } /* END OF TEMPLATE */ const int N = 1007; int a[N], b[N], res, n; void dq(int i, int sum) { if (i > n) res = res + (sum * sum * sum * sum + 2 * sum * sum) % 5 + 1; if (i <= n) { FOR(x, a[i], b[i]) dq(i + 1, (sum + x) % 5); } } int main() { #ifndef ONLINE_JUDGE freopen("test.inp", "r", stdin); freopen("test.out", "w", stdout); #endif // ONLINE_JUDGE ios_base::sync_with_stdio(0); cin.tie(0); cin>>n; FOR(i, 1, n) cin>>a[i]>>b[i]; dq(1, 0); cout<<res; return 0; }

Compilation message (stderr)

modsum.cpp: In function 'int main()':
modsum.cpp:56:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     freopen("test.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
modsum.cpp:57:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   57 |     freopen("test.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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