Submission #2668516

---

Source Code Expand

#include <iostream>
#include <iomanip>
#include <cmath>
#include <vector>
#include <queue>
#include <algorithm>
using namespace std;

static void print_time(int32_t start, int32_t end) {
	int32_t start_hour = start / 60;
	int32_t start_min = start - start_hour * 60;
	int32_t end_hour = end / 60;
	int32_t end_min = end - end_hour * 60;
	printf("%02d%02d-%02d%02d\n", start_hour, start_min, end_hour, end_min);
}

int main()
{
	int32_t N;
	scanf("%d", &N);

	vector<int32_t> rain(1442);
	std::fill(std::begin(rain), std::end(rain), 0);
	for (int32_t n = 0; n < N; n++) {
		int32_t S, E;
		scanf("%d-%d", &S, &E);

		int32_t hour, _min;
		hour = S / 100;
		_min = hour * 60 + S - (hour * 100);
		if (_min % 5 != 0)
			_min -= _min % 5;
		rain[_min]++;

		hour = E / 100;
		_min = hour * 60 + E - (hour * 100);
		if (_min % 5 != 0)
			_min += 5 - (_min % 5);
		rain[_min + 1]--;
	}

	for (size_t i = 1; i < rain.size(); i++)
		rain[i] += rain[i - 1];
	rain[1441] = 0; // sentinel

	int32_t start = -1;
	for (size_t i = 0; i < rain.size(); i++) {
		if (rain[i] > 0) {
			if (start == -1)
				start = i;
		} else {
			if (start != -1) {
				print_time(start, i - 1);
				start = -1;
			}
		}
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
                 ^
./Main.cpp:26:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d-%d", &S, &E);
                         ^

Judge Result