Submission #842656

#	Time	Username	Problem	Language	Result	Execution time	Memory
842656		EntityPlantt	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	95 ms	11576 KiB

foehn_phenomena

#include <cstdio>
#define int long long
const int mxn = 200005;
int n, q, s, t, h1, h2, delta[mxn], i, res, l, r, x;
signed main() {
    scanf("%lld%lld%lld%lld%lld", &n, &q, &s, &t, &h1);
    for (i = 0; i < n; i++) {
        scanf("%lld", &h2);
        delta[i] = h2 - h1;
        if (delta[i] > 0) res -= s * delta[i];
        else res -= t * delta[i];
        h1 = h2;
    }
    while (q--) {
        scanf("%lld%lld%lld", &l, &r, &x);
        l--;
        if (l >= 0) {
            if (delta[l] > 0) res += s * delta[l];
            else res += t * delta[l];
            delta[l] += x;
            if (delta[l] > 0) res -= s * delta[l];
            else res -= t * delta[l];
        }
        if (r < n) {
            if (delta[r] > 0) res += s * delta[r];
            else res += t * delta[r];
            delta[r] -= x;
            if (delta[r] > 0) res -= s * delta[r];
            else res -= t * delta[r];
        }
        printf("%lld\n", res);
    }
    return 0;
}

Compilation message (stderr)

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:6:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    6 |     scanf("%lld%lld%lld%lld%lld", &n, &q, &s, &t, &h1);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:8:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |         scanf("%lld", &h2);
      |         ~~~~~^~~~~~~~~~~~~
foehn_phenomena.cpp:15:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         scanf("%lld%lld%lld", &l, &r, &x);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 10 / 10
• Subtask 3: 60 / 60