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[BOJ] 13305 주유소 (S3)
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박예진/11주차/260311.cpp

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#include <iostream>
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using namespace std;
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int main() {
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ios::sync_with_stdio(false);
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cin.tie(NULL); cout.tie(NULL);
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int N;
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long long dist[100001], price[100001];
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cin >> N;
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for (int i = 0; i < N - 1; i++) {
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cin >> dist[i]; // 도로의 길이
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}
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for (int i = 0; i < N; i++) {
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cin >> price[i]; // 주유소 리터당 가격
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}
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long long min = 1e9, sum = 0;
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for (int i = 0; i < N - 1; i++) {
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if (min > price[i]) {
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min = price[i];
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}
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sum += min * dist[i];
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}
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cout << sum;
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}

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