Submission #122706

#	Time	Username	Problem	Language	Result	Execution time	Memory
122706		win11905	Two Antennas (JOI19_antennas)	C++11	2 / 100	3055 ms	376 KiB

antennas

#include <bits/stdc++.h>
using namespace std;

const int N = 305;

int n, m;
int h[N], x[N], y[N];

int main() {
    scanf("%d", &n);
    for(int i = 1; i <= n; ++i) 
        scanf("%d %d %d", h+i, x+i, y+i);
    scanf("%d", &m);
    while(m--) {
        int l, r; scanf("%d %d", &l, &r);
        int mx = -1;
        for(int i = l; i <= r; ++i) {
            for(int j = i+1; j <= r; ++j) if((x[i] <= j-i && j-i <= y[i]) && (x[j] <= j-i && j-i <= y[j])) mx = max(mx, abs(h[i] - h[j])); 
        }
        printf("%d\n", mx);
    }
}

Compilation message (stderr)

antennas.cpp: In function 'int main()':
antennas.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
antennas.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d", h+i, x+i, y+i);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
antennas.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &m);
     ~~~~~^~~~~~~~~~
antennas.cpp:15:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int l, r; scanf("%d %d", &l, &r);
                   ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 65