제출 #1066525

#제출 시각아이디문제언어결과실행 시간메모리
1066525tamthegodFish 3 (JOI24_fish3)C++17
9 / 100
2073 ms7784 KiB
#include<bits/stdc++.h> #define int long long #define pb push_back #define fi first #define se second using namespace std; using ll = long long; using ld = long double; using ull = unsigned long long; mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); const int maxN = 1e6 + 5; const int mod = 1e9 + 7; const ll oo = 1e18; int n, d; int a[maxN]; void ReadInput() { cin >> n >> d; for(int i=1; i<=n; i++) cin >> a[i]; } void Solve() { int q; cin >> q; while(q--) { int l, r; cin >> l >> r; int val = oo; int res = 0; for(int i=r; i>=l; i--) { if(a[i] <= val) { val = a[i]; continue; } if(d > a[i] || val < a[i] % d) { res = oo; break; } res += (a[i] - val - 1) / d + 1; int cur = val; val -= val % d; val += a[i] % d; if(val > cur) val -= d; } cout << (res < oo ? res : -1) << '\n'; } } #define taskname "sol" int32_t main() { if (fopen(taskname ".inp", "r")) { freopen(taskname ".inp", "r", stdin); //freopen(taskname ".out", "w", stdout); } ios_base::sync_with_stdio(false); cin.tie(nullptr); int T = 1; //cin >> T; for(int itest=1; itest<=T; itest++) { ReadInput(); Solve(); } }

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int32_t main()':
Main.cpp:59:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |         freopen(taskname ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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